April 08, 2021

Linux – CDM Create Digital Music

Great news for MOTU interfaces: new Ultralite, Apple Silicon and Big Sur support

The Mark of the Unicorn shines brightly. MOTU are here with a ground-up redesign of their blowout hit audio interface UltraLite (now on revision mk5). Combine that with expanded support on Apple platforms and a still-great driverless line, and you have a MOTU interface for just about any job.

The post Great news for MOTU interfaces: new Ultralite, Apple Silicon and Big Sur support appeared first on CDM Create Digital Music.

by Peter Kirn at April 08, 2021 02:32 PM

April 07, 2021

Blog – MOD Devices

MOD Firmware Update v1.10

We are very excited to officially launch our new firmware update, version 1.10, for all MOD devices. 

This update brings many new features and tweaks to the platform and device controllers: file handling support, improvements to actuators addressing, a big update for the Duo device controller, and many more things to get excited about!

Let’s dive in! :)

File handling

We are really happy to finally introduce one of the most requested features among our community – the ability to store your own files inside MOD devices.

This feature opens a lot of possibilities for future developments! 

Some of them are already in place, like:

  • an Audio File player (perfect to play backing tracks or audio loops);
  • a Cab Sim IR Loader that allows you to load speaker cabinet impulse responses of your choice;
  • Exampler, a plugin that allows you to load samples (yes, it was a test plugin, but we realized that it could be actually useful by itself)
  • MIDI File, a plugin that allows you to load and play MIDI files from your MOD device.

Just a little glimpse of what we can get in the future thanks to this new feature: recording audio and MIDI inside your MOD device, sample-based instruments, reverb impulse responses… in general all sorts of plugins that require file storage.

To manage the files stored on your device we added a File Manager button that you can find in the bottom-left corner of the web interface.

The File Manager is divided into four sections: 

  1. Audio Files;
  2. MIDI Files;
  3. Impulse Response Files;
  4. Instruments. 

In each of these main folders you find different subfolders. 

The files in these folders can be accessed from within plugins, allowing developers to choose which folders contain relevant files for their plugin.

Actuator addressing improvements

This firmware update brings a lot of improvements to the addressing of device actuators. These improvements are platform-wide, meaning that they apply to all MOD devices.

Momentary Mode

From now on you can use the buttons on the Duo X or the footswitches of the Duo/Dwarf as momentary switches. 

This allows you to actually “play toggle-type controls” so that they only get toggled on (or off) while the actuator is held down. 

This is perfect for example to temporarily layer some octave-up effects on your guitar or to open up a delay send on your drum machine.

You can find this setting by opening the advanced settings for your toggle addressing, under the “Mode” dropdown.

Knobs controlling toggle parameters 

Now it is also possible to assign toggle parameters – such as the effects on/off switch – to your knobs. This will help you take even more advantage of all the actuators available on your device.

Don’t get lost on the list parameters

Another evolution of the addressing possibilities relates to the assignment of buttons (Duo X) and footswitches (Duo/Dwarf) to cycle through list parameters.

In the Advanced settings for the addressing, you can set the LED color to be static or to cycle. In cycle mode, the LED will cycle through different colors, helping you identify the position in the list that you currently have selected.

More pages for the MOD DuoX

Talking about taking advantage of the actuators, if you are a Duo X user you will notice that instead of 3 different pages of addressing, now you have 6. 

In other words, this means that your Duo X now has a whopping 12 endless knobs, 48 knobs, and 24 buttons available for addressing your parameters. This is accompanied by an improved design for the addressing dialog, as seen in the image below.

To support this, we changed the “pages mode” setting in the device. 

The option for using the three performance buttons to switch between pages has been replaced by using two buttons: the right button goes to the next page, the left button goes to the previous page. 

The option for using a single button that cycles through all pages remains the same. You can set this behavior up from the device settings.

MOD Duo Controller Update

As we promised before, we keep working to make the Duo even better.

In this update, the Duo even received the most visible cosmetic changes.


The changes include:

– new fonts

– cleaner look for assigned parameters

– pedalboard and snapshot names in the header of the displays

– foot navigation mode showing names of previous and next pedalboard, since the active pedalboard name is already shown in the header

-added blinking LED in foot navigation mode (the led stops blinking when the pedalboard is loaded)

A world of improvements

Fancier plugins

In this release, we added support for four official LV2 extensions and one custom LV2 extension:

  • log
  • parameter
  • patch
  • state
  • control-input-port-change-request

For developers, log extension support means being able to “print” statements from within the plugin and have its output be sent to the browser, facilitating debugging.

The patch/parameter support allows arbitrary messages to be sent and received by the plugin or WebGUI. This allows developers to create more expressive UIs for plugins – such as showing a waveform preview of a file or the waveshape on a synth.

LV2 state extension allows the development of plugins able to save states of recorded audio loops or text notes, for example, even after you turn off your device! 

this new LV2 State extension allows us to write little notes using the new Notes plugin in our pedalboards; #saveyourshoppinglist

And finally, plugins with control input ports can now request a value change, breaking this old restriction coming back from LADSPA days.

These features are still a work in progress and will still require the development of plugins that take advantage of these new possibilities. 

As most of them have already been tested with real plugins, it is only a matter of time until you start to see them in the MOD store.


We decided to add an option to control the brightness of the LEDs on the Duo X. You can find it in the Device Settings. 

This way you will have no problems including the Duo X in your setup if 2021 gives a turn to worst and we end up making music in dark bunkers.

MOD store

Now it will also be easier to navigate the MOD store and to check the new cool plugins available. We added a new filter option that allows you to see only the non-installed plugins.

MOD settings

If you visit the settings with the new firmware installed you will for sure notice a new “Dangerous” section. Nothing to be afraid of, yet we urge you to be careful using it!

This new section allows you to do irreversible actions such as deleting your banks or plugins.

We hope that you are as excited about this new firmware update as we are!

As you can see in this post, there are quite a few major improvements that take the MOD platform to a completely new level.

Get ready, the future is exciting for the MOD world!

Update 1.10 Changelog

All devices

  • NEW: MOD Dwarf support
  • NEW: Dangerous section in Web GUI settings (for deleting user data or reflashing controller firmware)
  • NEW: Device buttons/footswitches “momentary” mode
  • NEW: File Manager interface and plugin file loading support
  • NEW: List-type addressing on buttons/footswitches can colorize the LED, so it is easier to know the current “index”/position
  • NEW: Support for Control Chain “value set”, “coloured” and “momentary” properties
  • NEW: Toggle-type parameters addressable on knobs
  • NEW: WiFi support (experimental, for advanced users only for now)
  • LV2 control-input-port-change-request extension support (plugin can request change of its own input control ports)
  • LV2 log extension support (plugin logs get sent to the browser window for easy debugging)
  • LV2 parameter extension support (boolean, integer, long, float, double, URI and vector types)
  • LV2 patch extension support (get and set)
  • LV2 state extension support (plugin can save and load arbitrary chunks/data, plus create paths)
  • Add non-installed plugin store filter
  • Broadcast plugin position to all open sessions when moved
  • General fixing to addressing dialog
  • Improve loading of bank pedalboards in quick succession
  • Never cache plugin-related information for local plugin builds
  • Remove old hacky behavior for 100% CPU usage on xrun
  • Rework device/controller protocol messages, in preparation for more complex types that will be used for the Dwarf
  • Rework preset loading and transport behavior, more robust now
  • Safer pedalboard screenshot generation, now with precautions against corrupt data
  • Safer use of save and reset through device menus, now unblocked while web interface is open
  • Set pedalboard modified flag when parameter changes or plugin moves
  • Show build environment tag in plugin store (can be none/”prod”, “dev”, “labs” or “local”)
  • Special rawMIDIClockAccess port property support
  • Control Chain bug fixing
  • General UI improvements and bug fixing

Duo changes

  • New device screen layout
  • New font
  • Blink LED when loading pedalboard through bank navigation, stops when pedalboard finishes loading

Duo X changes

  • Add 2 button actuator page mode (left button is down, right button is up)
  • Increase number of parameter pages from 3 to 6
  • Fix sporadic boot issues
  • Add display contrast per display controls
  • Invert color of the knob area on the displays

by gabrielhenriquefma at April 07, 2021 07:57 PM


Notstandskomitee: Denial music video

 The music video to the track Denial from the new Notstandskomitee album Unstable Release is online:

by herrsteiner ( at April 07, 2021 01:51 PM

April 06, 2021

Last Call for Ardour 6.7

Starting Ardour 7, there will only be support for the following OS:

  • macOS 10.9 (or later)
  • GNU/Linux systems with (or later)
  • Windows 7 (or later)

Notably OSX/PPC, OSX 10.6 and Windows XP will no longer be supported.

Tech Details We would like to use some modern C++11 features. Some older OS do not directly support this.

It is still possible to get Ardour running by compiling a compiler with C++11 support on those systems e.g. zyn-build-osx/ at master · zynaddsubfx/zyn-build-osx · GitHub
but you are on your own there.

Before dropping support for older systems, we would like to release a final stable, good version.

We need your help for that.

Please bump any bug reports that produce crashes on the those older systems by leaving a comment on Note that we are only interested in severe issues that prevent Ardour from working reliably (no plugin related bugs).

10 posts - 4 participants

Read full topic

by Robin Gareus at April 06, 2021 11:22 PM

digital audio hacks – Hackaday

You Otter Be Able to Stream that Audio: Open Hardware Eclipses Chromecast Audio

When Google halted production of the Chromecast Audio at the start of 2019, there was a (now silent) outcry. Fans of the device loved the single purpose audio streaming dongle that delivered wide compatibility and drop-dead simplicity at a rock bottom $35 price. For evidence of this, look no further than your favorite auction site where they now sell for significantly more than they did new, if you can even find an active listing. What’s a prolific hacker to do about this clear case of corporate malice? Why, reinvent it of course! And thus the Otter Cast Audio V2 was born, another high quality otter themed hack from one of our favorite teams of hardware magicians [Niklas Fauth, Jan Henrik, Toble Miner, and Manawyrm].

USB-C and Ethernet, oh my!

The Otter Cast Audio is a disc about the shape and size of standard Chromecast (about 50mm in diameter) and delivers a nearly complete superset of the original Chromecast Audio’s features plus the addition of a line in port to redirect audio from existing devices. Protocol support is more flexible than the original, with AirPlay, a web interface, Spotify Connect, Snapcast, and even a PulseAudio sink to get your Linux flavored audio bits flowing. Ironically the one thing the Otter Cast Audio doesn’t do is act as a target to Cast to. [Jan] notes that out of all the protocols supported here, actual Cast support was locked down enough that it was difficult to provide support for. We’re keeping our fingers crossed a solution can be found there to bring the Otter Cast Audio to complete feature parity with the original Chromecast Audio.

But this is Hackaday, so just as important as what the Otter Cast Audio does is how it does it. The OtterCast team have skipped right over shoehorning all this magic into a microcontroller and stepped right up to an Allwinner S3 SOC, a capable little Cortex A7 based machine with 128 MB of onboard DDR3 RAM. Pint sized by the bloated standards of a fully interactive desktop, but an absolutely perfect match to juggling WiFi, Bluetooth, Ethernet, and convenient support for all the protocols above. If you’re familiar with these hackers’ other work it won’t surprise you that what they produced here lives up to the typical extremely high quality bar set by such wonders as this USB-C adapter for JBC soldering iron handles and this TS-100 mainboard replacement.

It sounds like a small production run might be on order in the future, but until then production files optimized for a particularly popular Chinese manufacturer are provided, with complete BOM and placement files. It sounds like turnkey production costs from that manufacturer are a shockingly reasonable $10 (total) per unit with most components, and come to a still-reasonable $22 with the remaining self-sourced components manually installed.

For a demo of the finished goods, check out the tweet embedded after the break.

by Kerry Scharfglass at April 06, 2021 08:01 AM

April 02, 2021


Notstandskomitee: Unstable Release album out

The Indian label Subcontinental Records released the new Notstandskomitee album Unstable Release.

Unstable Release is the official successor of the album The Quarantine Report from 2020. 16 exclusive new tracks produced between 2009 and 2020 are compiled to an all new album.

by herrsteiner ( at April 02, 2021 11:36 AM

April 01, 2021

News – Ubuntu Studio

Ubuntu Studio 21.04 Beta (Hirsute Hippo) Released

The Ubuntu Studio team is pleased to announce the beta release of Ubuntu Studio 21.04, codenamed Hirsute Hippo.

While this beta is reasonably free of any showstopper DVD build or installer bugs, you may find some bugs within. This image is, however, reasonably representative of what you will find when Ubuntu Studio 21.04 is released on April 22, 2021.

Please note: Due to the change in desktop environment, directly upgrading to Ubuntu Studio 21.04 from 20.04 LTS is not supported and will not be supported.  However, upgrades from Ubuntu Studio 20.10 will be supported. See the Release Notes for more information.

Images can be obtained from this link:

Full updated information is available in the Release Notes.

New Features

Ubuntu Studio 20.04 includes the new KDE Plasma 5.21 desktop environment. This is a beautiful and functional upgrade to previous versions, and we believe you will like it.

Agordejo, a refined GUI frontend to New Session Manager, is now included by default. This uses the standardized session manager calls throughout the Linux Audio community to work with various audio tools.

Studio Controls is upgraded to 2.1.4 and includes a host of improvements and bug fixes.

BSEQuencer, Bshapr, Bslizr, and BChoppr are included as new plugins, among others.

QJackCtl has been upgraded to 0.9.1, and is a huge improvement. However, we still maintain that Jack should be started with Studio Controls for its features, but QJackCtl is a good patchbay and Jack system monitor.

There are many other improvements, too numerous to list here. We encourage you to take a look around the freely-downloadable ISO image.

Known Issues

Official Ubuntu Studio release notes can be found at

Further known issues, mostly pertaining to the desktop environment, can be found at

Additionally, the main Ubuntu release notes contain more generic issues:

Please Test!

If you have some time, we’d love for you to join us in testing. Testing begins…. NOW!

by eeickmeyer at April 01, 2021 09:58 PM

Blog – MOD Devices

Effect pedals: from analog to digital

Learn the history of effect pedals and see how technology now allows you to obtain the same sounds using virtual pedalboards with digital plugins

Over the years, musical instruments have been modified to better meet the sound needs of musicians as well as the musical demands of each era.

With technological advancement, new instruments were created while other ways of manipulating the sound were improved, creating new possibilities for guitarists and other instrumentalists.

That is the case with effect pedals.

We can define an effect pedal as a portable device, actionable with the feet, capable of altering the sound signal between the guitar and the amplifier.

Nowadays, effect pedals are considered more than just accessories to produce timbre changes in an instrument. Many musicians even work with this equipment as if they were musical instruments, obtaining unique and innovative sounds.

In this article, we’ll talk about the evolution of effect pedals from the mid-20th century to the present day, when digital technology has converted transistorized circuits into plugins that can be modified by musicians themselves to build virtual pedalboards.

At the end of the text, we describe the most iconic pedals in music history and indicate a plugin to digitally emulate each effect. All of them available for download from the MOD Devices plugin gallery.

Turn up the volume and let’s go!

The prehistory of pedals

Before the first pedals were developed, effects used to be incorporated into the amplifiers. 

From the 1930s, the popularization of tube models contributed to the emergence of the first experiences with saturation, since these devices still did not support high volumes at that time.

In the 1940s, Leo Fender’s work took amplifier technology a step further, adding potentiometers for bass, mid, treble and presence control.

Another invention that went hand in hand with the evolution of the amplifier and contributed to the construction of the guitar’s timbre was the echo effect.

The Echosonic was the first amplifier developed with this technology, and its main characteristic was to generate a delay in electronic impulses.

In 1959, a new leap came with the creation of Echoplex. Based on the tape recorders, this device had characteristics similar to those presented in the Echosonic amplifier.

However, being an independent device, it allowed the guitarist to connect it to any other brand of amplifier that was available on the market.

This device has become a sound reference to this type of effect, and is still digitally simulated by several companies that manufacture delay pedals.

Later, other effects like tremolo and reverb were invented, became popular and were also inserted in the amplifiers.

The first effects pedals

With the popularization of the transistor in the late 1950s other innovations emerged, the transistorized amplifier among them.

Because it didn’t use valves, this equipment had a totally pure sound without distortion even when operating at a very high volume.

This historic moment was characterized by experimentation with new timbres and sounds, even trying to recreate the distortion of the old tube amps that was impossible to obtain using its transistorized “cousins”.

The distortion, in addition to modifying the sound, gave greater amplitude to the guitar sound and helped the player to achieve greater sustain.

The discovery of this effect by a new generation of guitarists spurred manufacturers like Marshall, Fender and Vox to develop what we know today as an effect pedal.

Over time, musicians with knowledge of electronics began to develop their own pedal designs.

With the emergence of new effects, each musical style became accustomed and became familiar with these devices that musicians sought to build their musical identity.

The diverse sounds generated by those pedals contributed to the emergence of several strands of the old rock’n’roll music, making that musical style to branch out partly due to the use of different effect pedals.

Among these ramifications we can mention: Metal and Grunge using distortion; Progressive Rock and Psychedelic Rock with echo and chorus; Punk Rock with fuzz; Pop Rock, Hard Rock and Glam Rock with overdrive, among others.

Types of effect pedals

We can classify the main effect pedals in six groups, according to their common characteristics:

Gain pedals: Within rock and heavy metal, the gain pedals are the most famous and used. These pedals transmit the signal through a transistor or diode to reproduce the sound of a tube amplifier. Examples: fuzz, distortion and overdrive.

Modulation pedals: Essential for guitarists who want to go beyond gain, they can fill the instrument’s sound with different and more complex effects. They were created to reproduce characteristics of the original rotating speaker, initially inspired by the Leslie Cabinet that accompanied the Hammond B3 organ. Examples: chorus, flanger, phaser and vibrato.

Timing pedals: As the name implies, timer pedals are based on time changes caused by the signal. They can offer from a few extra notes to drastic changes in the sound, creating different environments. Examples: delay, reverb and looper.

Pitch Pedals:  are the ones that add or change notes in the guitar signal. It is like changing the tuning of your instrument. The result is very easy to identify, since the sound is somewhat digitized and sometimes mixes both the original and the altered sound. Examples: arpeggiator, pitch shifter, harmonizer and tuner.

Filter/Tone pedals: The filter and tone pedals are those that modify the volumes of specific frequencies in some way. They could be placed in the shade category, but it is interesting to see them on another “shelf”. These pedals can serve as stationary or dynamic equalizers. The proposal may be to ignore, reduce or accentuate different frequencies in the signal, resulting in unique sounds. Examples: equalizer, wah-wah, envelope filter and talk box.

Volume pedals: As the name implies, they are used to change the volume of the guitar signal. For that reason, they are usually at the end of the chain of pedals, before just the timer pedals, so that the signal arrives complete before the volume reduction and the effects of time. Examples: boost and tremolo.

Classic pedals and digital plugins

Next, we will briefly describe some of the most important effect pedals and indicate digital plugins, which represent the state of the art in the evolution of these effects.

The plugins indicated in this article were all developed in open code and can be used to assemble virtual cranks for use in the innovative digital stompboxes produced by MOD Devices.


One of the most “primitive” pedals, fuzz is also one of the most popular. Its sound is based on the saturation of old tube amplifiers. It is like a distortion, only less controlled and more full-bodied, even a little “dirty”.

Its digital soulmate is GxFuzzMaster, modeled after the Vintage Fuzz Master, a really wild fuzz that gives back to the fuzz sound that was heard in the most insane Jimi Hendrix performances, or psychedelic noise freak outs of the 60’s and 70’s. All the madness of a vintage fuzz without the hassle of carrying a stack with you.


The most famous effect of rock and, perhaps, of all music. The dynamics of the distortion pedal is similar to that of the fuzz: recreating the sound of a high-gain tube amplifier. The difference is that the distortion ends up being a little more malleable and, in a way, versatile, with possibilities of control and tone that go beyond. It’s like the fuzz after going to the barbershop.

The MOD team modeled the DS1 plugin after the legendary BOSS DS-1, a distortion pedal mainly used for guitar. Simply put, the DS1 distortion pedal is a modern classic. It was first produced in 1978 and is still widely popular. No wonder it was part of pedalboards from great names such as Kurt Cobain, Joe Satriani, Steve Vai and Josh Klinghoffer. The DS1 features three knobs which can take the sound in a variety of different directions.


The dynamics of overdrive is similar to that of distortion and fuzz, but the sound acquired is a little closer to what you actually get from tube amplifiers at really high volume. The focus is on saturation, which leaves the sound not so focused on weight, but on warmer tones.

The GxTubeScreamer is an analog distortion emulation of a real classic: the Ibanez TS-9, first released in 1982. It is one of the most successful, widely copied and “modded” overdrive pedals in the history of the electric guitar. The pedal mimics the sound of a vintage tube amplifier, and has a characteristic mid-boosted tone which is popular amongst blues and rock players. 


One of the most popular modulation pedals, the chorus has a typically underwater sound. For this, the pedal doubles the guitar signal and leaves the “bent” slightly out of time, crossing with the original. It is possible to regulate in very subtle ways, as if you were playing with two separate amplifiers, or very drastic, as if you were two guitarists playing together.

The CR-1 Chorus is intended to emulate a classic, analogue and vintage sound. Ranging from subtle modulation effects to bright coloration, the CR-1 will add a retro feel and enhance all of your instruments.


The flanger offers a kind of distortion in the phase and in the tone of the guitar signal. The signal is doubled as in chorus, but here, the “fold” starts slower and then accelerates. It is as if it stayed behind, but reached the original signal. 

The MDA ThruZero simulates tape-flanging, where two copies of a signal cancel out completely as the tapes pass each other. It can also be used for other “modulated delay” effects such as phasing and simple chorusing.


The phaser is also based on the duplication of the signal, except that, in this case, the doubled signal has a cycle that enters and leaves the phase of the original. It sounds like a jet plane taking off.

The Phaser II is a modern take on this classic, well-loved effect. Thanks to its two modulation options, you will be able to customize your sound using either a traditional sine-based periodicity or the smoothened fractal oscillation.


As the name already indicates, the vibrato pedal offers the effect of signal vibration. The doubled signal is modulated by tuning, creating this illusion that the guitar lever is used all the time.

The Larynx is a simple, great sounding vibrato effect with a tone control. The Depth knob controls the intensity of the modulation effect and Rate changes the modulation frequency.


The delay pedal doubles the guitar signal and allows you to define how long the “folded” version will be played, as well as how many times it will be played. It serves both to change the sound of what you are playing at that moment and to create a live base, allowing you to do a solo over the top without having a rhythm guitarist behind.

The Scape delay looks like a straightforward delay pedal but there is more than meets the eye. The delayed sounds can be re-tuned with the Tune knob in the settings session. Set it to your standard tuning of 440Hz and hear a normal rhythmical sounding delay. Or use it to achieve some interesting modulated sounds. Each note will be slightly different, further increasing the uniqueness of this effect.


The name “reverb” is a shortened version for “reverberation”, that is, the persistence of a sound after it is produced, according to the environment and the surface it is on. The reverb pedal helps to transport the listener to any location – from a concert hall to a cave. It is one of the most versatile and complete effects that exist.

With the Roomy reverb you can easily add a natural color and liveliness to your sound, mostly if you’re going for a natural, in-person kind of sound. The Decay knob allows you to set the duration of the reverb, the Damping knob allows you to control the high frequencies in the reverb tail, producing a warmer sound with less “edge”, and finally the Mix knob selects the amount of dry and wet signal. 


The looper is like an improvement of the delay, expanding the repetition time of a sound. It is recommended, especially, when the idea is to obtain “eternal repetitions”. Because it is very useful, the looper is almost essential for artists who perform alone or with few instruments.

Developed by the Jesse Chappell, the SooperLooper is a simple, straightforward looping station that can be used to layer some vocal or guitar harmonies. It also comes in a stereo version.


An arpeggiator is a sequencer. A sequencer plays a series of sounds based on a source and parameters set by you, the user/musician. In the case of an arpeggiator pedal, the “source” is whatever you plug into it: guitar, bass guitar, synth, toy, etc. The parameters are the pedal knobs and buttons, controlling things like: pitch, tempo, order, steps, scale, key, etc. 

The MOD Arpeggiator is a classic arpeggiator with some added spice. The plugin is specifically designed for the MOD platform, with a focus on live usage. Besides the standard arpeggiator controls, there is also a special control, called “Octave Mode”. When set to “1 Up / Cycle”, the plugin acts as the typical arpeggiator we all know and love. The other options provide more variations to extend the classic paradigm.

Pitch shifter

Known by its versatility, the pitch shifter can be associated with a wah-wah or volume pedal to accentuate its effect. The idea is similar to that of the arpeggiator, but it can vary between more octaves and add variations in sonority.

The MOD 2Voices is a pitch-shifter featuring two outputs with independent pitch-shift controls. The pitch of the input signal can be shifted anywhere between -12 semitones down, and +24 semitones up. Particularly relevant for low-CPU use cases.


The harmonizer is like a specific pitch shifter variation to create harmonies in your sound. The proposal is to retain the original sound and add the new note, modified, to a specific distance from the original, harmonizing automatically.

The Harmonizer plugin is a (relatively) simple harmonizer that allows you to set the scale to either Major, Minor, or Minor Harmonic, and then shift up a +3rd or +6th, or down a -3rd or -6th in that scale. As with nearly all harmonizers, you will have to play in the correct key (which can also be configured).

Wah-wah e Auto-wah

Basically, wah-wah is a bandpass filter that attenuates low and high frequencies. It’s like having a tone pedal on your foot. They can be activated manually, by a potentiometer that is below the continuous control pedal, or automatically, as soon as you step on the pedal. Also known as an envelope filter, auto-wah uses signal strength to control the frequency sweep. The amount of “wah” is defined by the knob setting.

The Auto-wah available in MOD’s Plugin Gallery is a combination of an envelope follower and a resonant low pass filter. For increasing sound levels, both the frequency and the bandwidth of the filter will increase. The intensity is controlled by ‘Drive’. For a normal wah, you can use an expression pedal to control ‘Frequency’ and set ‘Drive’ to zero.


The idea behind the boost pedal is simply to increase the volume of your guitar at a specific pass. And this is done without creating saturation – so it cannot be placed in the category of gain pedals. However, it is also possible to create and experiment with this pedal, associated with other types of effect pedals – whether to offer some notes higher than others, to press in a rhythmic way or something like that.

The GxBooster is a 2 band boost plugin which allows you to boost the high and the low frequencies independently.


The tremolo pedal reduces and increases the volume of the signal cyclically, from a periodic variation in amplitude. Old amplifiers often have this tremolo function that today is translated into pedals. 

The TAP Tremolo plugin is a great straightforward tremolo with easy controls, suitable for use with any instrument. The Harmless plugin is a waveshapeable harmonic tremolo with a stereo phase control.


The compressor pedal is considered one of the essentials for guitarists who prioritize the clarity of their notes. As the name implies, it is used to compress the signal so that it is neither too high nor too low. The proposal is to level the volume of what is being played. This helps to present a more consistent and well-regulated sound.

The Invada Compressor is a very easy to use, high-quality relaxed compressor that features 6 knobs and a high level of controllability. The ‘Attack’ controls how quickly the compressor starts to act. The ‘Release’ is the period when the compressor gradually stops acting. The Knee controls whether the bend in the response curve between below threshold and above threshold is abrupt (hard) or graduated (soft).  

How can you try all these cool plugins?

All the digital stompboxes made by MOD Devices grant you acces to more than five hundred audio and MIDI plugins in a collection that will never stop growing.

You can choose from all the famous stompboxes, FX, synths, sequencers and amps that made history in music.

In order to further expand your sonic possibilities, there is also a wide range of exotic synths, sequencers and tailored effects for crafting original sounds you’ve never heard before.

With all these variety of digital effects, you can build your own boards and optimize them for any instrument you wish. 

Wanna give them a try?

Visit our website and get to know more about our multipurpose audio devices.

by gabrielhenriquefma at April 01, 2021 09:29 PM

March 31, 2021

The Linux-audio-announce Archives

[LAA] Dumstick MIDI File Player Multiplatform 1.2.0 Released

Drumstick ( is a set of 
GPLv3 licensed C++/Qt libraries for MIDI applications. The project includes 
several tools as examples, and among them is the drumstick-guiplayer 
utility that leverages the Drumstick::ALSA library, so it is available only 
for Linux (because the ALSA sequencer is a linux only technology). Some 
people have requested a program with the same functionalities also on 
Windows and macOS, so here it is ...

Some key features:

* MIDI Output to hardware MIDI ports, or any other Drumstick backend
* Transpose song tonality between -12 and +12 semitones
* Change MIDI volume level (using MIDI CC7)
* Scale song speed between half and double tempo

In v1.1.0:

* Pianola, Channels and Rhythm views
* Sticky Window Snapping (for Windows OS only)
* Russian translation (Thanks to Sergey Basalaev)
* Spanish translation updated
* Recent files menu options
* Language choice menu options
* Command line options: --portable and --file (for portable configuration)

New in v1.2.0:

* Lyrics view (karaoke window)
* Character encoding detection
* File Info (metadata) dialog

Build requirements:

* C++11 compiler
* Qt5
* Drumstick 2.1
* CMake 3.10

Copyright (C) 2021 Pedro Lopez-Cabanillas  
License: GPL v3 or later

Project and Source Repositories


by pedro.lopez.cabanillas at (Pedro Lopez-Cabanillas) at March 31, 2021 11:32 PM

[LAA] B.Spacr - New LV2 sound effect plugin


after weeks of hard work I just released the first official version of a 
new sound effect plugin.

B.Spacr is a unique LV2 effect plugin that enables a clear and brilliant 
audibility of your music production.
B.Spacr is suited for *any* kind of music, including rock, funk, pop, 
rap, and electronic music.
This plugin can be added to each track individually or to the master bus 
with *zero latency*.
The result is a space-clear sound *without any loss* of audio signal 
information and without
any artifacts only depending on the quality of the input signal. In 
contrast to many over-complex
audio plugins, the number of parameters have been reduced to the minimum 
for the best *user experience*. 

Enjoy and make some music with it

by sjaehn at (Sven Jaehnichen) at March 31, 2021 10:42 PM

KXStudio News

KXStudio Monthly Report (March 2021)

Hello all, another monthly report about the KXStudio project is here.

If you have been paying attention to these reports, you likely already know what is going to be covered here.
Starting late February, I began using a public kanban-style board in order to show/list the things I am working on and plan to do on the short and medium term.
In a few days I will delete the "done" items related to March, so that the "done" stuff actually relates to the current month.

Now getting to the news..
First, in case you missed it, DISTRHO-Ports and PawPaw had a new release, which finalizes the custom/redistributable Vitalium fork of Vital.
While testing, a few issues on the JUCE LV2 wrapper were found and fixed.
To the point of, at least on Linux, we now have the LV2 version behaving better than the VST3 one.
Additionally, this PawPaw release automates the macOS-universal builds, something that is being applied for Carla and jack2 next releases.

Speaking of Carla, the 2.3-RC2 version was tagged, with the final v2.3 release scheduled for April 15.
The remaining things to check and fix are all very minor, so we are all good for a release anyway.

And speaking of jack2, current plans are to fix the macOS-universal meta-data situation among other minor things where possible.
I began fetching the zita-a2j/j2a code to work as internal client (just like jack1 does) but found a few issues while testing.
It already works well if the internal client is not unloaded, which is good enough for the setup I had in mind for it first - using it to expose USB audio gadget mode in a MOD device.
You can already grab the code from moddevices jack2 fork though I will try fix the last things so it is good to add in next jack2 release, expected at April 15 as well.

There is a big DPF overhaul of its graphic handling, mostly triggered from updating to latest pugl (used for window and event handling).
There is nothing to show just yet, as the code does not even build right now.
I am still on the phase of reworking some core C++ code, so yeah, nothing to show yet.

On a small note, I also patched eg-sampler (LV2 example sampler) to be able to load non-mono files and resample the audio sample to the host sample-rate.
There was a race condition when loading new files, which is now fixed and merged upstream.
This work was mainly done in order to have a quick usable plugin using files for MOD, but overall everyone benefits.

Regarding packages in the KXStudio repositories, there are a few updates. Those are:

  • airwindows added
  • melmatcheq.lv2 added (reusing LibraZik package, much appreciated!)
  • distrho-ports updated to 2021-03-15
  • lsp-plugins updated to 1.1.29
  • sequencer64 updated to latest git

And that is it for now.
If you appreciate the kind of work I do, please consider a donation.
Thank you in advance for your support and stay safe out there!

PS: 2 of the package updates above appear as a result of a Patreon perk ;)

by falkTX at March 31, 2021 07:24 PM

March 29, 2021

rtirq update - 2021 second edition's here,
(a third time, fixed twice again)
just something that might and almost sounds like a complete rewrite but not really ;)...

In its latest (this) incarnation rtirq (init-script/systemd-service) now tries to save and restore its state the best it can, on start and stop respectively.


The same old disclaimer still applies: rtirq makes only sense to real-time preemptive (PREEMPT_RT) patched kernels or, in alternative, to a threadirqs boot-enabled Linux kernel.

Enjoy && Keep safe && healthy!

Donate to using PayPal Donate to using Liberapay

by rncbc at March 29, 2021 12:00 PM

March 25, 2021

Linux – CDM Create Digital Music

Watch Unreal Engine make low-latency visualizations, thanks to Arthur Barthur

At the meeting point of physics simulation, 3D visualization, and modular audio inside Unreal Engine, there's Arthurs Audio BPs. And they just keep getting better - not just doing interesting visual stuff with sound, but making it low-latency.

The post Watch Unreal Engine make low-latency visualizations, thanks to Arthur Barthur appeared first on CDM Create Digital Music.

by Peter Kirn at March 25, 2021 08:32 PM

March 18, 2021

digital audio hacks – Hackaday

Wooden You Love to Build a Ribbon Microphone?

Carbohydrate foams derived from dead trees are not the first material that springs to mind when considering building audio equipment. But really, there’s no reason not to explore new materials for jobs normally reserved for metal or plastic, and when pulled off right, as with this wooden ribbon microphone, the results can both look and sound great.

To be fair, there are plenty of non-wood components in [Frank Olson]’s replica of a classic RCA model 44 microphone. After all, it’s hard to get wood to exhibit the electromagnetic properties needed to turn acoustic energy into electric currents. But that doesn’t mean that wood, specifically walnut veneer, isn’t front and center in this design. [Frank] worked with thin sheets of veneer; cut into shape with a commercial vinyl cutter and stacked up with alternating grains, the wood was glued up with copious cyanoacrylate adhesive to form a plywood of sorts. The dogbone-shaped body was fitted with two neodymium magnets, leaving a gap just wide enough for the microphone’s ribbon diaphragm. That was made from a thin piece of aluminum foil that was corrugated using a DIY crimp roller. Suspended between the magnets and connected to leads, the mic element was adorned with a wood and fabric windscreen and suspended from elastic bands in a temporary frame for testing. The narration on the video below was recorded with the mic, which sounds quite nice to our ears.

We’ve seen ribbon microphones before, as well as wooden microphones, but this is the first time we’ve seen a wooden ribbon microphone. It looks as though [Frank] has more work he wants to do to finish it off properly, and we eagerly await the finished product.

by Dan Maloney at March 18, 2021 08:00 PM

Qtractor 0.9.21 - An End-of-Winter'21 Release batch #3

Hello thrice!

Qtractor 0.9.21 (end-of-winter'21) is out!


  • Ignore snap while ALT key is pressed, on the main track-view and the MIDI clip editors (aka. piano-roll).
  • Fixed a FTBFS when native LV2 UI GTK2 support is disabled.
  • Fix IPlugView leaks for VST3 plugins.


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.


Project page:


Git repos:

Wiki (outdated; help?):


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

Stay safe and healthy! && Keep having fun, always!

Donate to using PayPal Donate to using Liberapay

by rncbc at March 18, 2021 07:00 PM

March 17, 2021

KXStudio News

Carla 2.3 RC2 is here!

Hello all, this is an announcement for the next release candidate for Carla v2.3.
Comes after a few issues were reported and fixed, specially important for Windows users where plugin discovery did not work.
The audiofile and midifile plugins were also finalized, the task I was waiting to finish before publishing this RC2.

For the changes made in v2.3 (compared to v2.2) please see the Carla v2.3-RC1 announcement.
The full list of changes in v2.3-RC2 is:

  • Add audio and MIDI file information as parameter outputs
  • Make audio and MIDI file host sync optional, enabled by default
  • Accept oga and opus audio files
  • Fix wine bridge build for certain systems
  • Fix (native) plugin discovery under Windows
  • Fix plugin search listing AU as possible type on Windows
  • Fix loading project with VST3 plugin bridges


To download Carla binaries or source code, jump on over to the KXStudio downloads section.
If you're using the KXStudio repositories, you can simply install "carla-git" (plus "carla-lv2" and "carla-vst" if you're so inclined).
Bug reports and feature requests are welcome! Jump on over to the Carla's Github project page for those.

Final note

Just a reminder that this is a release candidate, and not the final release yet.
There are a few known issues I want to fix before tagging v2.3 as stable, but it is very very close.
And of course, if you appreciate the kind of work I do, please consider a donation.
Thank you.

by falkTX at March 17, 2021 07:05 PM

March 15, 2021

GStreamer News

GStreamer 1.18.4 stable bug fix release

The GStreamer team is pleased to announce another bug fix release in the stable 1.18 release series of your favourite cross-platform multimedia framework!

This release only contains bugfixes and important security fixes, and it should be safe to update from 1.18.x.

Highlighted bugfixes:

  • important security fixes for ID3 tag reading, matroska and realmedia parsing, and gst-libav audio decoding
  • audiomixer, audioaggregator: input buffer handling fixes
  • decodebin3: improve stream-selection message handling
  • uridecodebin3: make "caps" property work
  • wavenc: fix writing of INFO chunks in some cases
  • v4l2: bt601 colorimetry, allow encoder resolution changes, fix decoder frame rate negotiation
  • decklinkvideosink: fix auto format detection, and fixes for 29.97fps framerate output
  • mpeg-2 video handling fixes when seeking
  • avviddec: fix bufferpool negotiation and possible memory corruption when changing resolution
  • various stability, performance and reliability improvements
  • memory leak fixes
  • build fixes: rpicamsrc, qt overlay example, d3d11videosink on UWP

See the GStreamer 1.18.4 release notes for more details.

Binaries for Android, iOS, Mac OS X and Windows will be available shortly.

Download tarballs directly here: gstreamer, gst-plugins-base, gst-plugins-good, gst-plugins-ugly, gst-plugins-bad, gst-libav, gst-rtsp-server, gst-python, gst-editing-services, gst-devtools, gstreamer-vaapi, gstreamer-sharp, gst-omx, or gstreamer-docs.

March 15, 2021 04:00 PM

February 22, 2021

Ardour 6.6 for Apple M1 systems available (experimental)

We are happy to make available an experimental build of Ardour 6.6 for Apple M1 systems. Currently, Ardour does not participate in Apple’s paid-for developers program, which means that the download cannot be notarized by Apple. This in turns means that after downloading, it is not possible to install/run the program. However, there is a relatively simple workaround. Assuming you downloaded the file to ~/Downloads, open a Terminal window and run the following command:

xattr -rd ~/Downloads/Ardour-6.6.0-arm64.dmg

You will then be able to install and run Ardour normally.

We have done limited testing for this build, but expect it to be fully functional. If you have an Apple M1 system, we’d appreciate your feedback.

There’s a free/demo version (with our usual free/demo limitation of going silent after 10 minutes, with the ability to ask for more time) available here.

The full build is available to Ardour subscribers (including those who have already paid US$45 or more for version 6.x) from here.

(Please note that we do not currently plan to offer new nightly builds for the M1. This will change in the future, probably with the next major release of Ardour)

5 posts - 3 participants

Read full topic

by Paul Davis at February 22, 2021 08:09 PM

Ardour 6.6 is released

Ardour 6.6 is released. This is primarily a maintenance release, although it does include several new features, including auto-show of touched parameters, tuning possibilities and keeping track of x-runs during recording.

For more details, please read the whole release announcement .

Download as usual from

19 posts - 11 participants

Read full topic

by Paul Davis at February 22, 2021 07:50 PM

February 07, 2021

fundamental code

Building a plant table: (2/3) quick angled bridle joints

Like the previous post, we’re working towards the construction of a plant table. The design I was building attempted to look slim and modern. One aspect of that was thin angled legs. Thin legs aren’t all that stable, on their own, so ideally there is a connection to the table top and then a second connection lower down. Attaching to the top and attaching further down the legs means angled jointery. The intent was to have a linkage come off the legs about 2/3rds of the way down and each linkage would connect to a base. Initially I was planning on a simple angled mortise & tendon joint, however the legs were thin enough that it seemed like a location which could easily crack down the line. Stylistically I could see either a proud tendon in the style of greene and greene or a stopped tendon looking nice, but no need to overcomplicate things.

I ended up going with a T bridle joint. As for the angle of the legs, they were all splayed out by an extra 10 degrees. With a 10 degree splay, it looks like:

2021 02 joint diagram
Figure 1. Angled T-bridle joint

So, with that goal in mind, what’s a good way to create the joint? The leg has exposed jointery which is easy to mark so that piece is an everyday normal bit of woodworking. The angle within the horizontal linkages though is less trivial to do by hand. In order to ensure the internal face of the linkage mated well with the leg power tools.

Typically I end up using my mortise machine for cutting holes like that. In this case it was just a matter of using the machine at an angle. The built in fence and clamping wasn’t designed for it, however with a simple wedge and some support blocks we could get going.

2021 02 mortise wide
Figure 2. Mortise Wideshot

Once we have a piece that we want to turn into a linkage, we can place it on the wedge, use the support blocks to relieve pressure, and attach a single clamp to hold it laterally. By using the mortising machine like this the inside angled edge can be cut cleanly.

2021 02 mortise close1 2021 02 mortise close2

After carving the initial hole it’s possible to use the rest of the waste with a bandsaw. As previously mentioned the jointery on the leg can be easily accessed, but it is somewhat unwieldy for my power tools, though a table saw could make quick work of the joint. In my case, some hand saws, a bit of chiseling, and a router plane made fast work. So, what does the result look like? Something like:

2021 02 result1 2021 02 result2 2021 02 result3 2021 02 result4

The last picture shows the three legs with the lowers linkages roughly lined up. A cap will connect the lowers, but I’ll leave that detail for the final post in this series.

As per how well does it work, it does a decent job. Since a through mortise is being created there is some occasional blowout. The tearing could be minimized by using a wider sacrificial wedge, but I’ll leave that until next time. While mortise machines aren’t a common shop tool I figured I’d throw this tool tip out there for others or at worst, myself next time I approach a similar task.

February 07, 2021 05:00 AM