planet.linuxaudio.org

July 06, 2020

GStreamer News

GStreamer Rust bindings 0.16.0 release

A new version of the GStreamer Rust bindings, 0.16.0, was released.

As usual this release follows the latest gtk-rs release.

This is the first version that includes optional support for new GStreamer 1.18 APIs. As GStreamer 1.18 was not released yet, these new APIs might still change. The minimum supported version of the bindings is still GStreamer 1.8 and the targetted GStreamer API version can be selected by applications via feature flags.

Apart from this, new version features mostly features API cleanup and the addition of a few missing APIs. The focus of this release was to make usage of GStreamer from Rust as convenient and complete as possible.

The new release also brings a lot of bugfixes, most of which were already part of the 0.15.x bugfix releases.

A new release of the GStreamer Rust plugins will follow in the next days.

Details can be found in the release notes for gstreamer-rs and gstreamer-rs-sys.

The code and documentation for the bindings is available on the freedesktop.org GitLab

as well as on crates.io.

If you find any bugs, notice any missing features or other issues please report them in GitLab.

July 06, 2020 02:00 PM

June 29, 2020

digital audio hacks – Hackaday

DIY Pocket MP3 Player

When [Neutrino-1] saw DFRobot’s DFPlayer module, he decided he wanted to make his own retro MP3 player. This tiny module comes packed with a ton of interesting capabilities such as EQ adjustment, volume control, and a 3 watt amplifier amongst other things. It can even play ads in between songs, should you want such a thing.

Controlling the DFPlayer module is easy using serial commands from a microcontroller, making it a convenient subsystem in bigger projects, and a potential alternative to the popular VLSI chips or the hard to come by WT2003S IC. [Neutrino-1] does a good job walking readers through the build making it fairly easy to remix, reuse, and reshare.

With the hardware sorted, all you’ve got to do is flash the firmware and load up an SD card with some MP3s. There’s even a small Python GUI to help you get your new player up and running. [Neutrino-1] also introduces users to the U8g2 display library which he says is a bit more feature-rich than the common Adafruit SSD1306 library. Great job [Neutrino-1]!

While you’re here, take a look at some of our other MP3 projects.

by Orlando Hoilett at June 29, 2020 11:00 AM

June 28, 2020

linux-audio « WordPress.com Tag Feed

How do I prepare Manjaro KDE for audio production?

How do I do that? I have a fresh Manjaro installation and we’re going to go for the process of configuring, the system and installing all necessary packages making sure it works good and then installing all the software that you might need for a music production, all the doors or the plugins.

And that sort of thing, and I’m going to show you where to get this and how to install it, how to later update it, etc. So you’ve just logged in for the first time into your new system and there’s a few things I want to do. The first thing might be a little bit strange to you, but the first thing I ever do is configure backups. So let’s open a program called time shift. Now it’s not installed, so we have to install time shift now.

Something I really like about Manjaro is that it has a drop-down terminal installed by default. So if you just press f12, you get this terminal, you can press shift, +, alt, +, arrow keys, right, arrow, key and down arrow key to make it bigger, and I usually like to have it much bigger. We can also make the font bigger if we just use ctrl + my mouse wheel, and this is going to be much easier to to follow.

I hope alrighty. So we need to install time shift, but first we need to update our package list so pac-man, which is the package manager s and Y. This will go into in update all the package information but of course we need to use sudo so sudo and I can now type exclamation points and that’s going to execute the previous command with prefix. So that’s going to execute pseudo pac-man s. Why? Now? I’m going to type in my temporary password, which is one two three four and let’s let it run and everything is up to date great now we can install time shift so I’m going to go sudo pac-man s, time shift.

This is going to install a package called time shift and all its dependencies proceed with installation. I just press ENTER and it’s default. Yes, it’s going to download some packages and time shift is installed. Now I can press f12 to hide the terminal. We can also close this hello dialogue. Now I can open my main menu and type time, and you see there is time shift a system restore utility. Now we need to give it our administration password that you’ve set during installation and during first run time shift, is going to ask you to configure how it’s going to do its job.

Now, if you have installed your system using ext4, filesystem you’re going to have to use our sink, which is the default option, this is simpler and but it takes longer to do. I have installed Manjaro using Manjaro architect and I’ve installed it on a btrfs filesystem. So I can use the very fast snapshot functionality of btrfs to create and restore these snapshots nearly instantly. So I’m going to select btrfs, you can also open help and read up about them.

Now we have to choose the file system, we’re going to store the backups on. We have one file system present in this in this laptop, it’s the main file system. So we don’t have to do anything now. We can configure a snapshot schedule by default. Time shift is going to do five daily backups, I’m going to disable that, because I want to be using time shift only to do manual snapshots when before upgrading my system, let’s go next this, let’s leave this enabled, and now we can include the user home directory.

What this means is everything in our home user directory will also be included in the snapshot. That means our documents. I want to use time shift only to store the system state, so I’m going to leave this off, but if you want to also include your documents, projects and everything, you can click this and it will back up everything, let’s press next and the setup is complete. I can now click finish: let’s create our first snapshot.

What you got to do is just click create now on btrfs. This takes no time at all. If you want to delete a snapshot, just use this delete button. If you were to roll back to that snapshot, we just press restore it’s as simple as that. We can also browse the selected snapshot files to retreat, something that was previously on our disk. But it’s not isn’t there anymore. Ok, this article is not about time shift.

Let’s get going now, I want to make sure octopi is installed and you can see it is, but in some previous versions of Manjaro it was not installed by default. So if you would like to install octopi, you would go to your terminal window and we can clear it and you can type sudo pac-man s. Octo P, give it your administration password, and indeed there is an update to be installed for that program. Let’s go ahead and do that all right.

What actually we want to do is update the system in its entirety, so I’m going to clear it the terminal and I’m going to run sudo pac-man, big s, small Y and small. U this command will update our system. Basically check if there is anything to update and it will update everything. This is an important thing on Manjaro, which is based on arch linux, as arch. Linux is a rolling release distribution.

That means there are no frozen states like with Ubuntu’s. You know different trees like 1404 or 1909 or who knows what 1909 oh, and then you update packages for the versions supported by this version of the system. No on arch based Linux distributions, like Manjaro, you are always on the bleeding edge, so you often will be required to update all your system packages now there is not much to update, because I have actually updated it during installation.

Another tool we’re going to need to install extra software is called yay yay, and it’s going to give us access to so called arch user repository, which is a collection of user created. Pk builds. These are scripts that get sources or binary packages from the internet and either build these sources or build packages from the binary files and install them to your system. There is pretty much everything you could ever imagine or want in the arch user repository, so we’re going to need that for some really bleeding-edge versions of our software or plugins that are not in the usual repositories.

So let’s go sudo pac-man s yay! Now you can see that I already had ya installed and that’s because I have chosen to have it installed during installation when I used Manjaro architect. But if you do a regular installation for the graphical installation program, you’re not going to have that option. So you will need to install yourself. The next thing we need to take care of is the jack on your server.

It’s pretty much the workhorse that’s going to hold all our audio work together. So, let’s just see if we have Jack installed, let’s go which Jack D and you can see we have Jack installed, but we want to make sure it’s the correct version. So I’m going to just make sure that Jack two is installed. I don’t use Jack one because Jack one is not multi-threaded and modern computers have at least two cores.

So it’s a shame not to use them for your DSP. From what I see here, Jack one doesn’t have any cool features at all: let’s go sudo pac-man s Jack and now you can see we have jacked installed so by default. Manjaro has supplied it with Jack 1, but we want Jack to do you want to remove Jack. I do so. We want to replace Jack 1 with Jack. Yes now. This is a very important step because if I have gone and installed other software depending on the jack replacing that package later would be quite problematic, because I would have to uninstall all the software that needs Jack audio server.

Then I could remove the jack 1 a package and then install Jack, and I would have to reinstall again all the software installed. On top of that now we are sure we are running Jack, so we can go ahead and install other things and the other thing I’m going to install is cadence sudu pac-man s. Cadence cadence is basically a control panel for production, audio work. Okay, we have cadence installed, let’s hide our terminal and let’s find it cadets.

Yes, it’s a jack toolbox, let’s open cadence and we can see. We have a yellow sign here, which says we have a non real-time kernel and with the user is an audio group. We’re going to check that soon, let’s see what we can do in the configuration the driver, we want to use alsa and yes, this is the analog interface, okay, fine, and we need to use real-time priority. Indeed, to up our performance, we can move the real-time priority up and now, if we try to do that, the jack server is started, but I’m going to stop it for now and first make sure we have other things configured properly.

So a one important thing for using Jack and Jack dependent applications like our door is to make sure that your user is allowed to use real-time scheduling in the system, and this is done with the use of so called audio group. So we can type in a command called groups and that’s going to show us what user groups our user is in and we can see it is actually in the audio group. But we need to make sure that the only group is properly configured so that it has the privilege to use the real-time scheduling that the jack server needs to do that, I’m going to go to a directory called etc’ security.

I’m going to list the files in there you can see there is limits, conf and limits dot D. This is a monolithic configuration file and this is a directory containing smaller files, which can be which are concatenated to produce the complete configuration I’m going to go into the limits, dot, d directory and list. What’s there you can see, there is something, let’s, let’s type less and ten and see what it is: their users mem, lock, 2024.

Ok, there is nothing here. Let’s go up, let’s now type nano limits, conf and I need to prefix that command with sudo. So this is run as administrator’. Nano is a text editor and limits. Conf is the file we want to edit and that’s the contents of the file. Now, let’s see if the audio group is mentioned here, let’s press ctrl W, which stands for where and now I can type audio audio is not found. That means our audio group is created in this system and our user has been added to it, but it doesn’t really have the privileges that we need.

So let’s go down to the end of the file and specify the privileges for the audio group. Let’s type a hash which starts a commented line and this is going to be ignored and now I’m going to type at audio, which means the name of the group user group tab. I’m going to use two tabs just to aligned with what is above. The type is nothing. The item is RT prior, which means real-time priority. Now I’m going to allow it 95 and, let’s also add another line, let’s call it audio again type tab, and this is mem lock unlimited.

This is another privilege for the jack server to use more memory in your system. I’ve taken this text from a website, Jack audio org, and there is a frequently asked questions section where you can find exactly how to configure this so yeah. You need to look it up and you probably will need to look it up now. We need to save the configuration file, I’m going to press ctrl o for out or right out limits.

Our conf enter. It wrote 54 lines great call. Now I’m going to press control X to exit, we can verify that the file was changed by typing less limits conf, and this is a file viewer. We can press page down, and indeed there is our audio group privileges specified, let’s press Q to quit this less problem now for this to take effect, we need to log out and log back in. So let’s do that. Okay, I’m logging! Back in now, we have cadence opened and can start all right now.

If there was no audio group in our system, we can create it by typing. Sudo group add audio. Now we need to type in our administration password. It’s going to tell us that the audio group already exists, but if it wouldn’t exist, we would have created it just now. Now we would have to also add our user to the audio group, and we can do this with the command usermod’. A big gene which means add to a group audio and now we can type our username alpha, but you can also type dollar sign and with big letters, user and this text will be substituted with whatever is the username.

Of course, I need to prefixed s with sudo or afterwards I’m studio and exclamation points, and this will execute the command. Now I have now. I should have done this before configuring, the audio group, because otherwise, that configuration would have not made any sense and then log out log back in and it would take effect to verify, let’s type in groups and indeed we are in the audio group. We can make it a bit easier by typing groups, pipe grep, which is a program to search for text audio, and it highlights the audio group in red for us to make it easier to spot.

Our user is in the audio group. Our audio group is configured so we should be able to run our tour just fine, let’s install it now. Maybe I’m going to use octopi to do so. So far I’ve been installing everything using the terminal, but you might prefer to use the graphical user interface. I’m going to type in our tour right, click install and it asks us to install optional packages. Xj do is an X, Jack article viewer, it’s a very useful viewer for working with film, soundtracks or editing, or making sound effects for pilot footage or whatever I’m going to install both of these.

Now, let’s commit these changes or apply these changes. Now I need to, of course, give my administration password and it’s going to install our door for us and Artur is installed, so let’s run it our door. Welcome to our door, I’m going to put everything in default places and I’m going to change this later. Let’s scan for plugins there’s not going to be much plugins because we haven’t installed any: let’s create an empty session hard or test my favourite name.

Let’s change the audio system to Jack, which is already running because we have started it with cadence and we can connect to it now. If we wouldn’t have the audio group and the audio group privileges properly configured, our door would not be able to create this session. It would give us an error and say that it cannot open the the session file or whatever it’s a misleading error message and what it really means is that it couldn’t obtain the real-time scheduling privileges.

Now we can pin the ardor icon to the task manager. It will let us open it up more quickly. You can also right click to start a new instance. If you want to open two other instances for some reason, we can create a new track control-shift-n, let’s make a stereo audio track, and this is already capturing audio from the built-in microphone huh. Let’s see if it works, it does hmm alrighty. It works. Now.

Let’s install more software, I’m going to save this. Let’s go back to octopi and now do you remember. I have told you we installed this program called yay. Now. If we go to tools, options and aur, you can see. We have yay selected as a as a program to interface with the arch user repository. You may have this dis elected so make sure you select yeah here. You can also enable a you are voting if you created an account on our aur Arch Linux at org.

I know I have so now I can vote on packages. You can select, no confirm and no edit to make it easier for you to go through the installation process. This will disable the option to change anything in the pay, Pete a build script, but it will also not ask you as many questions and it just going to be smoother. Let’s apply these settings and now I’m going to install this infusion first thing: I have to click on this alien face to enable the eye tool so we’re going to search the arch user repository instead of the regular arch linux or Manjaro linux packages.

So i’m going to type in Zen and press enter and we have Zen fusion here, let’s right-click and you can see. I have already voted on this package. Let’s install it and now octa-pie opens up an interminable ater and runs the high command with parameters of our package. It’s going to ask us a password, I’m going to give it the password, and you see it shows question proceed with installation and automatically answered yes, because we have selected the know confirm option.

This is right now downloading all the source code for s infusion and it’s going to compile it on the spot and install the package for us, so we can use it. This is going to take a short while, because the infusion is quite a big program now, as this installation is going on, I’m going to tell you something about pulseaudio, pulseaudio and jack are a cause of many headaches for many people using linux for audio production, because Both pulseaudio and jack are sound servers and they tend to not cooperate very well, but there is a very easy way to deal with that, and that is just to install a jack module for pools audio.

Then Posada will be able to use Jack as its audio backend. Instead of trying to use your sound card directly, two nights are fighting for the attention of Princess Elsa, the nimble Jack and the well-known police audio. But for the kingdom to blossom, we need Jack to pass the letters between Elsa and pull so do as any other way around will cause a disruption. What did I just make up unless all of that can be handled by pipe wire, but that’s a topic for another article? That means you will be able to play articles from your web browser and run order at the same time without having to stop or the other, and you can also then record articles from the web browser into your other session, because pulseaudio will expose its audio ports To the jack server and Kadence makes this easier you can see.

We have this post audio tab right here and we have information of the post of your server. You can see that post audio is started and bridged to Jack. That’s good news, because that means we already have pulls out you configured to talk to Jack. You can go to tools open katia, which is a Jack patch Bay, and we can see what is happening in our system right now. This is a graph of Jack clients and connections.

The system nodes show the built-in sound card that we are using for our Jack server, and you see we have Poots audio jack sync, which is the post audio output. So whatever you play in your web browser, for example, is going to feed it there. It’s audio here and right into our speakers, and here is post audio jack source, whatever you’re going to, if you’re going to talk to someone using a web application in your browser.

This is going to get the sound from your microphone, and here is the stereo microphone built into the laptop, but with the power of Jack, you can reroute that wherever you want, for example, you can feed output of your other session to pull Solio, so we can, For example, process your voice with our door and make people hear you with your voice changed or with reverb added or whatever I’m going to reset that to the previous st.

. Do not leave it in a mess. So Katia is a tool shipped with cadence. There is another tool called Claudia, which is a front end for laddish session mannered manager. There are also level meters. This one shows the microphone input and this is an out meter and I think it’s working, because we have this thing here. Yes, let’s see how the installation is going and we’re still cloning. Now we are copying the downloading the source files for EM Robby’s ESTs framework, which is the GUI framework that Mark Mercury have created for this infusion.

Normally this is much faster, but I’m recording the article and that slows everything down. Another thing we can talk about is using real time. Kernels now with Manjaro. Installing a new kernel is very, very easy. You just open your main menu and type kernel, and there is this tool for installing different kernels, and here are all the available kernels you can see. We are currently running kernel version for 5.

4 point 18 1, which is a long time supported kernel, it’s installed and it’s running, but there is a newer kernel, but there is a different kernel and it’s a real-time kernel. So a real-time kernel might give us better performance for Jack audio server. However, I have not found a significant change difference in my workload, but if we were to install it, we will just click here. Click yes give our password and we can show details and it’s going to download all the packages and install the real-time kernel for us, of course, to use this new kernel, we need to reboot our machine and you can verify what kernel are you running either by Opening this Manjaro kernel manager, or by opening a terminal hit f12 for example, and type a command called, you name a, and this tells us we’re running Linux.

This is the name of the computer, and this is the version of the kernel. This is a pre-emptive kernel, so it allows real-time scheduling, but it’s not like super full support and our new kernel is installed. You can see it’s now installed. If we reboot our computer, you will have a menu where we can choose which kernel we want to boot. Once we’re done with installing all the packages, I will reboot and we will choose this real-time kernel and once we confirm that it works, then we will remove the other one.

So we don’t have this option and the boot process will be simpler. Let’s check back and we’ll tale cloning by the way, a very important command on Linux is sudo, make coffee just joking. Okay. Now we have to give our password. One thing I don’t like about yeh is that it can timeout with the password. I need to install it again. Thankfully, it caches the results. So it’s not a big problem and we have the infusion installed.

Let’s try it in our door, I’m going to press Shift key to open up the side terminal by the way. I think we should change the font size of our door now there it is yeah that looks much better. Not all phones will be updated immediately, though you should rest at our order for this to take full effect and I’m going to press ctrl shift and and add a new track. Let’s make it a me track and you can see we don’t have as in fusion on this list.

What we have to do is go to edit preferences plugins and go scan for plugins, and you can see we have it’s detecting, it’s helped. It has detected zeenat’s of effects so now, if I go to control-shift-n and add a new MIDI track, I have the amounts of the facts on the list. I’m going to pick lv2 version. Let’s call this Zen fusion for some reason it didn’t have to plug in here: okay, let’s do it CIN and some effects.

Now it’s failed. What the okay all right! So now we can control shift and create a new MIDI track. Okay, let’s press control shift n to create a new MIDI track and I’m going to choose Xin fusion VST. Let’s call this Xin fusion, it’s called dance of effects, but with the new interface it is as in fusion and there we have it and it works. I’m going to install more software that I use and I need let’s go, install surge and there is search synthesizer.

We can install the binary version, it’s going to be faster because it’s not going to have to compile everything. So if you read the output, you can see that it’s downloaded a debian package right here. It’s extracted it and it’s created an arch package from that. Now it’s compressing this package, so it can be installed. So arch user repository is using various means to pull in different software, so it can be installed on Arch Linux based operating systems like Manjaro.

Now it’s installing the package and it’s installed. If we now go into edit preferences and scan for plugins, you can see it has found a search plug-in. You can create a new MIDI track, call it Serge and we can select search from the drop-down menu and, of course it doesn’t work. Hey it’s alpha and it’s eight days later I have actually used this laptop with our door 6 and that we installed during this article that you’ll see and I recorded a gig and everything went perfectly and right now.

I’ve just went back to check this order. 5 problem with all be two plugins and I removed order six and installed our door five again and it works it works. So I think that must have been some error in the arch unofficial order build and that it’s already fixed. Okay, let’s install a bunch of plugins that I use all the time I use called plugins. They are very important. I also use LSP plugins tap. Plugins may be an easier way to do.

This would be to go to the raw audio group of packages, and here we have a lot of stuff that you might want to install, for example, audacity yep golf caps, also Carla the plug-in host. This show plug-in framework, dragonfly reverb. Of course AB you meet er. Yes, drum gizmo, oh yes, EQ tank. You certainly G on kik. Oh yes, guitarist for sure helm, yeah, IRL v2. It also might want to install Jack capture or something else.

I don’t like Linux sampler at all liquid sfz I’ve heard it’s a nice plugin LSP plugins yeah MDA lv2 yeah. These are some good plugins, though I had problems with them. Ninjas too, is a nice drum loop, slicer noise repellant is an excellent realtime de noising plugin. Actually two plugins one is using neural networks can looking through anything else I might need or want sample v1 is a very useful sampler set b3 is an excellent hammond organ emulator Sherlock lv2 is a great plugin for reading.

What’s going on in your MIDI stream, sonic visualizer is a very useful program for well visualizing audio file contents, as WH plugins are used to Tampa plugins sure wall shaper. Oh yes, love spectrum 2 X, 42 plugins are very useful. These are excellent. Audio metering, plugins zam plugins, are great. Zita audio jack bridge is very nice. It’s a tool for bridging, also applications to Jack. A Zeta ng bridge is a network jack application to send Jack audio over network.

I’ve made a article about that and there’s 8 RF 1, which is the very well sounding reverb and now to install them. I right-click somewhere and then go install. It asks me to install Jack. I don’t want to because that’s optional and I also have Jack already project. Em is a music visualizer. I don’t need a visualizer plugin and it should now list all the packages I want to install. Do we have everything I think we have everything we need.

Let’s do it, of course you need to give it your password, and now we just wait in the meantime, I’m going to close this our door session, so the user interface can reload with the changed font size. Now, we’ve mostly installed software that is present in the regular Manjaro or arch linux repositories, but we can also fund search plugins that are in the arch user repository. Sometimes these are newer versions of the plugins.

I’m always amazed how fast Arch Linux packaging manager works on Debian it’s like 10 times slower. I got used to how slow it was. It’s already installed. Alright. Now we can just go edit preferences plugins scan for plugins. Now that’s going to take a while, okay yeah now this is unlocked. I can enable the aur search. What is there that is not in the usual repositories, I’m going to search for LV, Oh bitch, rot bit.

Rot are very useful plugins that are unfortunately, not very popular. We can install bit rot plugins. Let’s do that. It’s going to download the sources of of github and build them for us, these are very small, so it shouldn’t take long. I very like the bitch rot, repeat plug-in, which is very good for on creating glitchy effects, and you can very well automate it in order. I like to use it on drum lines, especially so you can have like, oh in Nevada, studio plugins in verse.

Three planes will be yay in Nevada are also some great plugins. Now I need to give my password. Okay bit. Rod is installed. We can install the invader plugins, it has 44 votes. People like these. Let’s see how order is going. Okay, it scanned everything. It has all the new plugins detected. Now we have a lot of plugins. Let’s go EQ 10-q. I use these a lot. So I’m going to add these two to my favorites.

I think there’s something wrong with our disorder installation. It can’t load any lv2 plugins. That’s no good, usually it just works so kind of sucks and I really wished something like that: wouldn’t go wrong when I’m making a article, but we have our in Venice to do plugins installed. You know what I’m going to do. I’m going to install our door! 6.0 and hope it’s going to work a bit better, so note that I’m searching in a you are, and we have our door get let’s right-click and install.

It would like to ask us to remove our door first, because these two are conflicting. If I were to edit the PK build file script, we could install both alongside, but let’s not do that, so I’m going to just remove our door, it’s already removed. Now, let’s go back to the aur search and I’m going to install our door, get you can see that our our door desktop or our icon here is no longer pointing to anything I’m going to unpin it because our door 6 is probably going to add a Different icon, we can also run Carla the nonlinear plugin host.

We can add a plugin, let’s see if the lv2 plugins work in Carla, let’s go with in Nevada. I can go with special filters and, let’s just enable lv2 plugins, nothing else in Fatah. Early reflections, reverb loaded and here is the user interface. I really like this early reflection, reverb plug-in, because you know it has this three-dimensional visualization of a room and you can place your source and your listener, and you can see the impulse response being generated on the fly and visualized.

I’ve used this a lot in the Lance perversion and lmms: okay, so lv2 plugins work in Carla, so that some problem with order. So we are not installing official order builds. So we can’t complain to order developers because the official builds probably work. Let’s open Serge lv2 here and it works, let’s make it bigger yep, just like it should alright, so Artur 6 is installed, let’s see if it works out or 6 of ascared configuration from our tour 5.

Would you like to these fans to be copied and used for our door, 6, yeah, sure and congratulations file will cover you now. You now can restart our door and okay. I don’t know why this get version. Has this weird icon welcome to this pre-release build of order? Six point: zero: three: zero! Three. 504! Yes, I know don’t use it for production, let’s create a new session, our door, six test. The main thing I want to know, if is if this version of our door, is going to work with LV two plugins, because that’s quite important, and I have no idea why the order 5 version didn’t work and, let’s see if our r6 works with all v2 Plugins because our door 5 didn’t want to control-shift-n, let’s create a new MIDI track and insert maybe sentence of effects.

Let’s call this Xena, and here it is, I’m not sure if this is the LV to plug in or the VST one. Let’s add a new track. Let’s go to me track: let’s make a no plugin at all and let’s insert the plug in manually, so plug-in manager, and here we should be able to filter by type so LV. Okay, let’s show instruments only show all formats. I want just LV okay, so we have LV two instruments: let’s try G on kick okay, so LV two plugins work in this order.

Six build that’s good. It took a while to install because this laptop is not the most powerful one. It just has 4 cores, and but it did it alright, so we have a working workstation to do things now. If we wouldn’t have the pulse out your jack module pulsar, they wouldn’t cooperate with jacks, so let’s try and find it in the package manager. In case you need to install it, we can also install vcv rack.

So in aur we have vcv. Rack can install the binary package, so you don’t have to build it from source. Ok, that works, and you can see we have VCB rack here. We can change the audio backends to Jack and we can make it feed into the system output, but now we can intercept that you can clean these and use these outputs here and now can record. Don’t pay attention to the X runs. This laptop is under heavy load.

No, we have recorded audio from vcv rack into order now. The very last thing we can do to try and improve our jack performance is to install a real-time kernel so away like I said before, you can go here, type kernel and we’re going to have this thing opened now we have installed the real-time kernel, but we Are still running the non real-time kernel, so I will now reboot this machine. I like to just press f12 and type reboot, oh by the way before we do, that we can create a time shift snapshot and we can do it in two ways.

I’m going to show you the graphical user interface way, so you’re open up time shift. We give it already you administrator password or root password, and we can click here to create a new snapshot, but I also want to show you how to do the same from the comment line. So I’ve got sudo time shift and if you run this command, it’s going to show you all the help text to tell you what you can do with time shift.

Basically we’re going to use the create option with comments. So let me clear the terminal and I’m going to go su time image if create, and then comments and now I’m going to type after installing all this software and I got press ENTER and it’s read a bit ers snapshot now. If I run time shift note time shift list, oh sorry, I need to use sudo, you can see. We have two snapshots. This was our first one, and this is the second one I’m going to close this terminal and I’m going to open the graphical user interface and you can see we have the same thing here and we can double click here to type comment, and this is going To be our initial snap shot snapshot, so it’s nice and we know what is what and why these are here.

You can see that our size has changed to four point: six gigabytes, so there’s quite a lot of things changed in our in our system partition or file system alrighty. I am going to now reboot the computer, so I’m going to go and you can do it from the main menu here leave and press restart or be cool like I am and just type reboot. What I’m going to do now is press shift to open the grub menu, but it doesn’t okay.

I think we need to change the configuration of grub. So let’s go sudo nano et Cie default grub, that’s a grub! Let’s give it the password, and here it is grab a timeout style uncomment. This line, if you want unable to save default function, come in the following line and set group default to saved okay Group default is set to saved, but this was disabled and I’m going to allow the generation of recovering boot modes because that’s useful, sometimes, okay, I’m Going to save this file and go update grub now, I need to, of course give it sudo, and it should use this to remake the configuration files.

Now if we reboot, I think we should be good if I’m going to smash their shifts key anyway. Get me that group menu group Group group group, oh yeah, we have the menu now we’ve got the group menu and the absolutely amazing thing about time shift and btrfs is that now we have arch linux snaps and you can see, we have the snapshots that we’ve Created so we can basically boot right into an older version of our operating system.

If we messed something up, we can just select a different snapshot right here. For example, if we removed a working kernel – and we don’t have anything to boot – we can just go here and boot an old version, and this is something really amazing – about btrfs and timeshift snapshots. Now we can go for Advanced Options for men, general Linux, and here we can choose the kernel. So man Gerald Linux, kernel 5.

4 is the default one and we’re going to go for 5.4 13 real time and I’m going to press ENTER and boot this one. Now, every time I boot into btrfs, I get this error and really doesn’t mean anything. You don’t have to press any keys. It’s going to disappear really soon. Okay, so we have logged in let’s open the kernel, dialogue see what we’ve got and yes, we are running the real-time kernel. Well, I hope you found this article to be useful thanks for reading and all the good luck with installing your own Manjaro system and configuring.

It for audio work. It’s not that hard. Many things that I’ve shown you are kinda, like double checking that it’s correctly installed. Now your the mileage mayor of may vary. You know. Every version of the mange road is so that you can download is going to be slightly different and also, if you install using the Manjaro architect or the graphical program, it’s going to give you different results. But overall, it’s really not that bad yeah.

So thanks for reading, I hope you’ve learned something and also big thanks to all fun people who are supporting my work on beat John and litter. If you would like to join them and help keep this show going, please go to patreon.Com/scishow and fur now go install Manjaro and make some music hey I’d like to apologize, because this article has taken away too long to finish alright. So I’d like to apologize, because this article has taken way too long to finish, however, midway through the editing, all the article editing in open source hell broke loose and I had to abandon olive altogether because it became so unstable.

I was unable to proceed and I had to go back to kdenlive, which also isn’t working great and it’s just crashing and hanging, and so it was real hell to finish this article, but I thought it yeah, so I hope you’ll enjoy it. I really hope it’s going to be worth it. Ok, bye,


Videos are truly an awesome way to get the point across. Any type of content from your business is important!

 

by Jimmy Dagger at June 28, 2020 05:20 PM

June 27, 2020

rncbc.org

Qtractor 0.9.15 - An Early-Summer'20 Release


Hi y'all!

Let's go straight to the real good news ;)...

Qtractor 0.9.15 (early-summer'20) is released!

Change-log:

  • Fixed MIDI tracks export that were missing the end-of-export tail parameter and bailing out always with default SMF format anyway.
  • Fixed VST3 component/controller inter-connection.
  • LV2 Atom/Port-event host notification support has been retouched, but still unofficial though.
  • Fixed VST3 audio-processor initialization/activation when a plugin has no inputs or outputs present.
  • Let main window pseudo-asynchronous stabilization re. menus, tools and status bars, just faster and immediate.
  • Fixed MIDI track monitor re-instantiation and reset.

Description:

Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.

Website:

http://qtractor.org
https://qtractor.sourceforge.io
http://qtractor.sourceforge.net

Project page:

https://sourceforge.net/projects/qtractor

Downloads:

https://sourceforge.net/projects/qtractor/files

Git repos:

https://git.code.sf.net/p/qtractor/code
https://github.com/rncbc/qtractor.git
https://gitlab.com/rncbc/qtractor.git
https://bitbucket.org/rncbc/qtractor.git

Wiki (help wanted!):

https://sourceforge.net/p/qtractor/wiki/

License:

Qtractor is free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

Keep the fun && Stay safe!

Donate to rncbc.org

by rncbc at June 27, 2020 11:00 AM

June 22, 2020

rncbc.org

Vee One Suite 0.9.15 - An Early-Summer'20 Release


Hi everyone!

Happy to announce the Vee One Suite of old-school software instruments, synthv1, as a polyphonic subtractive synthesizer, samplv1, a polyphonic sampler synthesizer, drumkv1 as yet another drum-kit sampler and padthv1 as a polyphonic additive synthesizer, are once again released for this not-so-pretty Early-Summer'20 season... ;)

There are still (the same only) two menus for you to choose:

  • the pure stand-alone JACK client with JACK-session, NSM (Non Session management) and both JACK MIDI and ALSA MIDI input support;
  • the LV2 instrument plug-in.

No big deal this time, though some might welcome that:

  • A long awaited expedite "Panic" button is now featured.
  • Note velocity doesn't affect DCF envelope anymore.
  • Avoid glib event-loop upon LV2 plug-in instantiation.

The Vee One Suite are (still) free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

So here they are again:

 

synthv1 - an old-school polyphonic synthesizer

synthv1 0.9.15 (early-summer'20) released!

synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx.

LV2 URI: http://synthv1.sourceforge.net/lv2

website:
https://synthv1.sourceforge.io
http://synthv1.sourceforge.net

project page:
https://sourceforge.net/projects/synthv1

downloads:
https://sourceforge.net/projects/synthv1/files

git repos:
https://git.code.sf.net/p/synthv1/code
https://github.com/rncbc/synthv1.git
https://gitlab.com/rncbc/synthv1.git
https://bitbucket.org/rncbc/synthv1.git

 

samplv1 - an old-school polyphonic sampler

samplv1 0.9.15 (early-summer'20) released!

samplv1 is an old-school polyphonic sampler synthesizer with stereo fx.

LV2 URI: http://samplv1.sourceforge.net/lv2

website:
https://samplv1.sourceforge.io
http://samplv1.sourceforge.net

project page:
https://sourceforge.net/projects/samplv1

downloads:
https://sourceforge.net/projects/samplv1/files

git repos:
https://git.code.sf.net/p/samplv1/code
https://github.com/rncbc/samplv1.git
https://gitlab.com/rncbc/samplv1.git
https://bitbucket.org/rncbc/samplv1.git

 

drumkv1 - an old-school drum-kit sampler

drumkv1 0.9.15 (early-summer'20) released!

drumkv1 is an old-school drum-kit sampler synthesizer with stereo fx.

LV2 URI: http://drumkv1.sourceforge.net/lv2

website:
https://drumkv1.sourceforge.io
http://drumkv1.sourceforge.net

project page:
https://sourceforge.net/projects/drumkv1

downloads:
https://sourceforge.net/projects/drumkv1/files

git repos:
https://git.code.sf.net/p/drumkv1/code
https://github.com/rncbc/drumkv1.git
https://gitlab.com/rncbc/drumkv1.git
https://bitbucket.org/rncbc/drumkv1.git

 

padthv1 - an old-school polyphonic additive synthesizer

padthv1 0.9.15 (early-summer'20) released!

padthv1 is an old-school polyphonic additive synthesizer with stereo fx

padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis.

LV2 URI: http://padthv1.sourceforge.net/lv2

website:
https://padthv1.sourceforge.io
http://padthv1.sourceforge.net

project page:
https://sourceforge.net/projects/padthv1

downloads:
https://sourceforge.net/projects/padthv1/files

git repos:
https://git.code.sf.net/p/padthv1/code
https://github.com/rncbc/padthv1.git
https://gitlab.com/rncbc/padthv1.git
https://bitbucket.org/rncbc/padthv1.git

 

Donate to rncbc.org

Keep having fun and safe (always!)

by rncbc at June 22, 2020 07:00 PM

GStreamer News

GStreamer 1.17.1 unstable development release

The GStreamer team is pleased to announce the first development release in the unstable 1.17 release series.

The unstable 1.17 release series adds new features on top of the current stable 1.16 series and is part of the API and ABI-stable 1.x release series of the GStreamer multimedia framework.

The unstable 1.17 release series is for testing and development purposes in the lead-up to the stable 1.18 series which is scheduled for release in a few weeks time. Any newly-added API can still change until that point, although it is rare for that to happen.

Full release notes will be provided in the near future, highlighting all the new features, bugfixes, performance optimizations and other important changes.

The autotools build has been dropped entirely for this release, so it's finally all Meson from here on.

This development release is primarily for distributors and early adaptors and anyone who still needs to update their build/packaging setup for Meson.

On the documentation front we have switched away from gtk-doc to hotdoc, but we now provide a release tarball of the built documentation in html and devhelp format, and we recommend distributors switch to that and provide a single gstreamer documentation package in future.

Instead of a gst-validate tarball we now ship a gst-devtools tarball, and the gstreamer-editing-services tarball has been renamed to gst-editing-services for consistency with the module name in Gitlab.

Packagers: please note that plugins may have moved between modules, so please take extra care and make sure inter-module version dependencies are such that users can only upgrade all modules in one go, instead of seeing a mix of 1.17 and 1.16 on their system.

Binaries for Android, iOS, Mac OS X and Windows are also available at the usual location.

Release tarballs can be downloaded directly here:

As always, please let us know of any issues you run into by filing an issue in Gitlab.

June 22, 2020 02:30 PM

June 18, 2020

digital audio hacks – Hackaday

Toddler-Friendly MP3 Player Navigates with Light

When designing this custom MP3 player for his grandson, [Luc Brun] ran into a unique problem. He wanted the boy to be able to operate the player on his own, but being only 2½ years old, the user interface would have to be exceedingly straightforward. Too many buttons would just be a distraction, and a display with text would be meaningless at his age.

In the end, [Luc] came up with a very interesting way of navigating through directories full of MP3 files using a few push buttons and a ring of WS2812 LEDs. The color of the LEDs indicate which directory or category is currently being selected: spoken nursery rhymes are red, music is orange, nature sounds are yellow, and so on. The number of LEDs lit indicate which file is selected, so in other words, three orange LEDs will indicate the third music track.

At his grandson’s age, we imagine at least a little bit of him navigating through this system is just luck. But as he gets older, he’ll start to form more solid connections between what he’s hearing and the color and number of the LEDs. So not only is this interface a way to help him operate the device himself, but it may serve as a valuable learning tool in these formative years.

On the other hand, if your goal is just to distract a youngster for as long as possible, an overwhelming number of LEDs, buttons, and switches might be exactly what you want.

by Tom Nardi at June 18, 2020 08:00 PM

June 11, 2020

KXStudio News

Carla 2.1.1 has been released

This is a bugfix for Carla version v2.1 series, fixing many bug reports and stuff I found along the way.

Carla is an audio plugin host, with support for many audio drivers and plugin formats.
It has some nice features like automation of parameters via MIDI CC (and send output back as MIDI too) and full OSC control.

Changelog

  • Fix carla-control not handling CLI argument for custom address
  • Fix carla-plugin not handling all callbacks
  • Fix carla-plugin LV2 UI not showing up if host supports touch feature
  • Fix for some plugin formats having 0 audio ports
  • Fix occasional crashes due to canvas shadow (Qt bug, shadow is disabled by now)
  • Fix canvas ports text width calculation with new Qt
  • Fix wrong assertion with size 1 MIDI messages
  • Fix errors in the icons
  • Fix incorrect base conversion for MIDI CC assignments
  • Fix rpath specification in pkg-config files
  • Fix build with Qt 5.15
  • Discovery: Force language to be "C" (English) so we can parse errors
  • Discovery: assume midi inputs = 1 if VST plugin is synth
  • Make canvas ports and groups ignore middle mouse clicks
  • Improve performance of canvas "inline display" rendering
  • Other miscellaneous bug fixes

Downloads

To download Carla binaries or source code, jump on over to the KXStudio downloads section.
Carla v2.1 is available pre-packaged in the KXStudio repositories, ArchLinux and Ubuntu since 20.04. On those you can simply install the carla package.
Bug reports and feature requests are welcome! Jump on over to the Carla's Github project page for those.

by falkTX at June 11, 2020 05:19 PM

June 07, 2020

Paul Davis Interview with LGW

Audio:

Text: http://libregraphicsworld.org/blog/entry/podcast-ep-002-paul-davis-on-the-deep-rewrite-of-ardour-daw

This is Part 1 of a two part interview (aka “Paul rambles on and occasionally lets Alex ask a question”).

Update: Part two is now online:

The transcript can be found at http://libregraphicsworld.org/blog/entry/podcast-ep-003-paul-davis-on-fixing-big-linux-audio-issues – Kudos to @prokoudine

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by Paul Davis at June 07, 2020 02:57 AM

June 03, 2020

News – Ubuntu Studio

Ardour 6.0 Information

Our friends at Ardour have released Version 6.0, and we would like to offer them a huge congratulations! While the source code and their own builds were available on release day, many of you have been waiting for Ardour 6.0 to come to Ubuntu’s repositories. Today, that day came. Ardour... Continue reading

by eeickmeyer at June 03, 2020 05:28 AM

May 31, 2020

KXStudio News

KXStudio Monthly Report (May 2020)

Hello all, another monthly report about the KXStudio project is here.
It has been a few months since one of these, which I apologise for.
It was wrong of me to assume I will have news every single month, some are just a bit slow on news due to external circumstances.

Anyway, a lot of work is going into Carla, lots of bug-fixes.
A good collection of them are piling up, which makes a v2.1.1 release worthy, so expect that in the next few days.

One of the new features in Carla is Linux VST3 support, already available if you use carla-git.
There is also a category filter in the add-plugin dialog now, and better handling of high-dpi mode.
That is basically it in regards to frontend/GUI changes, everything else is on the backend/audio-host side.
All of this will be in Carla v2.2, with a tentative release date of July 15.

Other developments happening behind the scenes are a DISTRHO-Ports update (setting old JUCE aside and using new juce6 branch for Linux VST3 plugins), plus updating its build system to meson.
The WineASIO project was finally given to me officially, so expect a release soon for that too.
There is also a big DPF rework going on, and a new project for cross-platform LV2 plugin binaries.
Those will be announced at a later point in time, once ready.

Regarding package updates in the repositories, there have been a few since the last monthly report. Those are:

  • element added
  • impro-visor added
  • ladish fixed to work on systems without python2
  • amsynth updated to 1.10.0
  • avldrums.lv2 updated to 0.4.1
  • bsequencer updated to 1.4.2
  • bshapr updated to 0.9
  • bslizr updated to 1.2.6
  • carla-git updated
  • fluajho updated to 1.5
  • geonkick updated to 2.1.1
  • lsp-plugins updated to 1.1.22
  • mod-host updated to latest git
  • patroneo updated to 1.5
  • vico updated to 1.1
  • x42-plugins updated to 20200411

Not so much work got done in regards to the website and documentation.
Perhaps for next time.

That is all for now, stay safe out there.

by falkTX at May 31, 2020 10:18 AM

May 28, 2020

On Delay Compensation & Recommendations for Routing

Ardour 6 Delay Compensation & Recommendations for Routing

Now that the dust has settled on Ardour-6.0 release, I’d like to point out some details regarding latency compensation.

General rules for routing

  • Prefer aux-sends over direct connections.
  • Avoid one-to-many direct connections (many-to-one is fine).

This article details on why and when following those rules is important.

Background

While developing full-graph latency compensation for Ardour 6, we faced one big issue: JACK. There were even times when we considered dropping JACK support.
One of JACK’s main features is that it facilitates anywhere-to-anywhere routing. Like an analog patch-bay one can use wires to connect everything without any constraints, even nonsensical connections.

“JACK provides mechanism, and does not enforce policy.”

However, unlike analog effects processors, some digital signal processors, do introduce a delay. Common examples are limiters, and pitch-shifters. Those effects need context, and hence buffer the audio internally which results in a delay. Still JACK allows one to arbitrarily connect those FX.

So let us have a look what happens when those effects are directly connected, using a latent effect as example:

Demonstration of effects of short delays (without latency compensation)

  1. Create an audio track. Its output is automatically connected to Ardour’s master-bus.
  2. Create an effect-bus. It is likewise auto-connected to Ardour’s master-bus.
  3. Add a latent effect to the Bus. This delays the signal passing through the bus.
  4. Connect the track’s output to the effect-bus input (in addition to the master-bus).

Figure 1 shows this as schematic. The direct signal from the track is summed with the delayed signal from the effect processor. Figure 5 below depicts a screenshot of an actual Ardour session with this setup.

Fig.1: block diagram
Fig.1: Example connection diagram showing ambiguous latency though different signal paths; red wire shows the signal path that has been delayed.

Sine wave phasing

When a sine-wave sample is loaded to the track and played while ramping up the delay of the effect-bus, the following can be observed:


Anim.1: Phasing of a 1kHz sine-wave, x-axis show time, y-axis signal amplitude, the delay time is in samples. green: source signal; red: delayed signal; blue: sum of the signals

As can be seen in this short video sequence, a 1kHz sine-wave when summed with a delayed version of itself cancels out after a delay of 24 samples (at 48kHz sample-rate).

Keep in mind that most latent effects have a fixed latency. The animation shows a variable delay for didactic purposes.

Comb filter effect

This can be generalized for all frequencies by looking at the spectrum of white noise. Different frequencies cancel out at different delays. This effect is called “comb-filter” after the resulting pattern in the spectrum:


Anim.2: Comb filter effect produced by summing white noise with delayed signal of the same noise

This demonstrates nicely why plugin delay compensation is important.

When using latent effects without delay compensation, some frequency bands in the resulting sound are notched out. If the delay is long enough, it may also lead to an audible delays or echo.

“Delay in the wire”

The above example shows a situation in which latency compensation is not possible.
This is because there there are two direct connections with different latency connected to a common destination.

The solution to this is to also delay the bypass accordingly:

Fig.2: Delay in the wire
Fig.2: “Delay in the wire” for latency compensation

In order to do this, a “delay in the wire” would be needed, however JACK does not offer that.

This is the reason why one should avoid one-to-many direct connections.

Ardour allows to seamlessly change back-ends. One can switch from JACK to Pulseaudio to ALSA (or ASIO, Coreaudio), to Dummy and back. So the constraint imposed by JACK’s design also extends to the connection logic of Ardour’s other back-ends. This is the reason why other Ardour backend likewise must not feature a delay in the wire (and why we’ve considered dropping JACK support).

Aux-Sends

This is where aux-sends come into play. Those offer routing that is internal to Ardour, and hence is not constrained by the backend.

As shown in Figure 3, aux-sends in Ardour include internal delay-lines, both for the send as well as the thru path. This allows to handle situation in which case a latent effect is either on the source-track, or the receiving bus.

Fig.3: Schema of internal delay-lines in a send
Fig.3: Schema of internal delay-lines in a send

As an added benefit aux-sends have a separate gain-stage and optionally an independent panner. This makes them generally more useful in most mixing situations.

Aux-sends can be added using the context-menu (right-click) in Ardour’s processor-box.

Fig.4: Adding an Aux-Send
Fig.4: Adding an Aux-Send

Ardour GUI Showcase


Fig.5: Screenshot of the Ardour Mixer, showing ambiguous latency due to connections (left) and delay-compensated routing using an aux-send (right)

The possibility to use both direct-connections and sends allows for nonsensical connections (this is also true for analog patch-bays), and situations that can lead to ambiguous latency. In Ardour a warning about this is displayed in the toolbar widget (Preferences > Appearance > Toolbar > Display Latency Compensation Info):

Fig.6: Ardour GUI Latency Indicator
Fig.6: Ardour GUI Latency Indicator

Conclusion

In summary this article explained in which case direct connections can lead to ambiguous latency, and how to avoid those by using internal aux-sends.

There are still many valid cases where direct explicit connections are preferable and valid.
In general this applies to all connections that have a single destination. e.g. Track to Master, or fanned-out multi-channel instruments.

This short article skips over major parts how external signals are aligned and read-ahead/write-behind techniques used to minimize overall delay.

Readers interested to dig deeper can find more information about this in the Thesis on Latency Compensation and Anywhere-to-Anywhere Signal Routing Systems.

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by Robin Gareus at May 28, 2020 04:44 PM

May 24, 2020

Ardour 6.0 is released

Ardour 6.0 is now released. Sorry for the wait!

You can download it from http://ardour.org/download

(If you download 6.0 for Linux before about 16:30 UTC on May 24th, you should probably download again, because we mistakenly released the wrong version of the build)

See what’s new at http://ardour.org/whatsnew.html

We hope to return to bi-monthly releases going forward, and there’s a lot of stuff to do!

WARNING

If you previously used one of the pre-release versions of 6.0 (basically, any version of the code since 5.12 was released) and are now trying the release, you should probably remove the existing preferences. We’ve already had one bug report that was caused by having a mid-development version of the preferences still around.

Linux: ~/.config/ardour6
macOS: ~/Library/Preferences/Ardour6
Windows; %localappdata%\Ardour6

Very recent versions of these folders will not cause problems, but this is just a warning since I’m sure there will some other issues arising from this sort of thing.

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by Paul Davis at May 24, 2020 02:39 AM

May 21, 2020

blog4

What I learned from one month usage of GODOT 3D Engine

What I learned from one month usage of GODOT 3D Engine

I finished an artpiece in GODOT for an online exhibition and I am really happy with it. The exhibition opened yesterday as a part of the AMRO (Art Meets Radical Openness) festival in Linz and you can check it out here or if you can't be bothered walking through the adventure like interface, its directly here:


 being part of my artproject The Big Crash, art for the pending burst of the real estate bubble. Tomorrow morning I give a lightning talk at AMRO about the usage of 3D engines in my art and GODOT is a central part of it.

But some points I found out:

- lightbaking didn't work for me, all kind of weired artifacts occured. A great rewrite of the lightbaking is underway and to be expected for version 4. I baked in Blender so it was no problem for me

- never ever use OGG Vorbis for short sounds which programmatically got exchanged in one player. I attached 2 sounds to one player node via the animation timeline and all kind of nasty pops and static occured at full volume. This is a absolute showstopper, it can damage speakers and hearing. It seems to be known so hopefully a fix is on the way. Workaround is to use WAV files for short sounds. Anyhow, OGG Vorbis sounds for longer looping background noises works perfectly, its only when they get exchanged in one player some buffers seems not cleared correctly.

- HTML5 export on Safari seems to miss the shadowmaps. Other browsers are fine. Also the crosssite tracking issue occurs only in Safari, when a Godot project is referenced in an IFrame on another server. That can't be fixed I guess.

- HTML5 export on IOS has the audio crackling and stuttering, in all browsers. Someone found a solution and posted a different WASM file which fixes it, its again a buffer setting issue, guess it will be fixed soon.

- Couldn't get WEBVR / WEBXR to work, hope it would be soon fully supported, would be great for drive-by VR worlds. Not everyone is capable to install an application on his or her VR device.


by herrsteiner (noreply@blogger.com) at May 21, 2020 06:37 PM

May 20, 2020

Subscription/Payments Problems (PayPal Issue)

Starting sometime on May 18th 2020, and continuing until the present, PayPal has a significant issue that is preventing ardour.org from being able to activate subscriptions. PayPal has acknowledged the problem and say:

Unfortunately, the problem you’re experiencing is being caused by a known technical issue with the PayPal system. Our engineers are currently working diligently on a solution to this problem. I am going to assign this ticket to our internal engineering ticket so that when the problem is resolved, you will be notified of its completion right away.

Subscriptions that were already active before this issue began are unaffected.

Currently, there are hundreds of messages queued at PayPal waiting to be sent to ardour.org. I am optimistic that whenever PayPal fixes their issue, these messages will be delivered and things will all return to their expected state, with your subscriptions active and functional.

If that does not happen, we will work to manually correct the problems caused by whatever is affecting PayPal.

Thank you for you understanding and patience.

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by Paul Davis at May 20, 2020 01:16 AM

May 19, 2020

blog4

AMRO20 Linz

Tomorrow opens AMRO20 (Art Meets Radical Openness) in Linz, this time as online version. All talks are streamed, exhibition is online etc. I contributed The Price Of Berlin to the exhibition and have a lightning talk on Friday 11:00 on Open Source 3D Engines.

by herrsteiner (noreply@blogger.com) at May 19, 2020 07:47 PM

May 09, 2020

News – Ubuntu Studio

Progress on Plasma

With our release announcement for Ubuntu Studio 20.04 LTS, we revealed that it would be our last version with the Xfce desktop, and that we would be moving to the KDE Plasma desktop starting with 20.10. Interestingly enough, that news took nearly two weeks to get noticed. When it did,... Continue reading

by eeickmeyer at May 09, 2020 02:16 AM

May 08, 2020

Linux – CDM Create Digital Music

monome’s alternative musical world: a hands-on creative expedition with norns and grid

It's a rarified way of making music - the ultra-minimal monome grid and norns open music platform. But what is it really about? We turn to reviewer Andreas Roman to find out.

The post monome’s alternative musical world: a hands-on creative expedition with norns and grid appeared first on CDM Create Digital Music.

by Andreas Roman at May 08, 2020 02:35 PM

May 06, 2020

Linux – CDM Create Digital Music

Get lost in stupidly ace sounds and imagery of the algorave, then get smarter and make your own

Algorave culture has been training years for this – it’s an audiovisual form that can make even a screen and streamed sound really come alive. Just watch – and actually, don’t just watch, here’s how to learn, too. Normally, algorave articles talk breathlessly about code, blah blah, people coding on screen, isn’t that nerdy, look […]

The post Get lost in stupidly ace sounds and imagery of the algorave, then get smarter and make your own appeared first on CDM Create Digital Music.

by Peter Kirn at May 06, 2020 04:36 PM

April 18, 2020

Development update: 6.0-rc1 tagged

It’s been a productive 3 weeks since we tagged the current code as “6.0-pre1”. Roughly 400 or so commits (changes) later, we’re now marking the current code as “6.0-rc1”, which means:

  1. no more translatable string changes before release (i.e. no major user-visible changes). Translators can now finish their work with high confidence that if they complete a translation, there will be no need to revisit it before 6.0 is released.

  2. No substantial changes between now and the release of 6.0

We welcome bug reports and feature requests on tracker.ardour.org as always.

Two notable “newish” features that have landed since pre1 are

  • Ardour now supports web interfaces via a websocket and JSON protocol. Luciano Iam was responsible for this work, and has already added a couple of demo “web pages” to show browser control of Ardour. We imagine/hope that this new “control surface” support will expand significantly during the post-6.0 development process. Start Ardour, enable websocket surface support, and point your browser at http://localhost:3818/ … then get busy with some HTML/CSS/JS. It must be stressed that this all preliminary work, and is not considered “finished”. However, it is open for significant contributions by non-C++ developers now.

  • MIDI editing keybindings (shift notes in time and pitch, change velocities etc. etc.) are now all user-definable rather than hard-coded. The key editor now provides a handy reference for keyboard shortcuts when editing MIDI notes.

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by Paul Davis at April 18, 2020 10:57 PM