A Synthesizer-Workstation written in C++, intendend to both work on Single-Chip-Devices with a touch display (Raspberry Pi) and computers.
- Serveral integrated virtual instruments like a B3 organ, an E-Piano-synthesizer, a sampler, drumkits, a subtractive/additive/FM-synthesizer, etc.
- MIDI-Routing between devices
- Looper, Arpeggiator, Sequencer/Drum Machine
- A touch responsive GUI
- A web interface or a desktop client that allows uploading new sounds
On Windows the building process is quite complicated, which is why I supply Windows binaries with every released version. On Linux the build process is pretty straighforward. MidiCube supports two build systems: Meson and CMake. The Meson build file compiles everything into one executable and compiles faster. CMake is slower but separates the project into different modules (Note: only the compilation process takes longer, MidiCube will have the same performance with both). At the moment it doesn't matter which build system you use but in future I will add a plugin API and different "hosts" (like the workstation ui you know now, a stripped down ui for use as an fx device on a raspi or a DAW plugin) where it might be from advantage to use the modular CMake build. Furthermore, CMake allows you to install MidiCube with all the relevant files using make install.
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Clone this repository
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Make sure to install the dependencies
sudo apt install meson ninja-build libsndfile-dev libsfml-dev librtaudio-dev librtmidi-dev libboost-all-dev -
Build it using meson (working directory is the clone project)
mkdir build meson ./ build cd build meson configure --buildtype release ninja -
Run the compiled "midi-cube" file in the root folder of the project
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Clone this repository
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Make sure to install the dependencies sudo apt install cmake build-essential libsndfile-dev libsfml-dev librtaudio-dev librtmidi-dev libboost-all-dev
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Build it using meson (working directory is the clone project)
mkdir build cd build CMAKE_BUILD_TYPE=Release cmake .. make DESTDIR=/your/install/location install -
Run the compiled "midi-cube-workstation" file in the installation folder
- RtAudio licensed under the RtAudio License which is pretty similar to the MIT License (https://github.com/thestk/rtaudio https://github.com/thestk/rtaudio/blob/master/LICENSE)
- RtMidi licensed under the RtMidi license which is pretty similar to the MIT license (https://github.com/thestk/rtmidi https://github.com/thestk/rtmidi/blob/master/LICENSE)
- libsndfile licensed under LGPL (https://github.com/erikd/libsndfile/commits/master https://github.com/erikd/libsndfile/blob/master/COPYING)
- FluidSynth API for playing soundfonts licensed under LGPL-2.1 (https://github.com/FluidSynth/fluidsynth https://github.com/FluidSynth/fluidsynth/blob/master/LICENSE)
- Boost licensed under the Boost Software License (https://github.com/boostorg/boost https://github.com/boostorg/boost/blob/master/LICENSE_1_0.txt)
- SFML licensed under the zlib/png license (https://github.com/SFML/SFML https://github.com/SFML/SFML/blob/master/license.md)
- Liberation font licensed onder the Open Font License (https://github.com/liberationfonts/liberation-fonts/tree/2.1.1 https://github.com/liberationfonts/liberation-fonts/blob/master/LICENSE)
- Format of .wav files from the german Wikipedia (https://de.wikipedia.org/wiki/RIFF_WAVE)
- Article about the Hammond-Organ from the german Wikiedia (https://de.wikipedia.org/wiki/Hammondorgel)
- "Modulation and Delay Line based Digital Audio Effects by Disch Sascha and Zölzer Udo (2002)" helped me implement the rotary speaker (https://www.researchgate.net/publication/2830823_Modulation_And_Delay_Line_Based_Digital_Audio_Effects)
- "Rotary Loudspeaker Effect by Ryan Brennan" helped me implementent the rotary speaker (https://ses.library.usyd.edu.au/bitstream/handle/2123/8310/Ryan%20review%20assignment%201.pdf)
- Article about delay lines from McGill university (https://www.music.mcgill.ca/~gary/618/week1/delayline.html)
- Effect Design Part 2 by Jon Datorro (https://ccrma.stanford.edu/~dattorro/EffectDesignPart2.pdf)
- Speed of the rotary speakers (https://www.musiker-board.de/threads/leslie-geschwindigkeiten-in-herz-frequenzen-fuer-die-vb3-orgel-gesucht.511349/)
- Wikipedia article about leslie speakers (https://en.wikipedia.org/wiki/Leslie_speaker)
- Wikipedia article about low-pass-filters (https://en.wikipedia.org/wiki/Low-pass_filter)
- Wikipedia article about high-pass-filter (https://en.wikipedia.org/wiki/High-pass_filter)
- German articale about vocoders (https://www.amazona.de/was-ist-ein-vocoder-geschichte-funktionsweise-varianten/)
- Very helpful blog post about PolyBLEP - oscilators for anti-alising by Martin Finke (I wrote my polyblep function based on his) (http://www.martin-finke.de/blog/articles/audio-plugins-018-polyblep-oscillator/)
- Article about soft clipping distortion by Eric Tarr (https://www.hackaudio.com/digital-signal-processing/distortion-effects/soft-clipping/)
- Paper about the simulation of a tube amplifier (https://ses.library.usyd.edu.au/bitstream/handle/2123/7624/DESC9115_DAS_Assign02_310106370.pdf;jsessionid=0318BB69B12E37D8810CEDFD50DB5A42?sequence=2)
- Very helpful tutorial on implementing resonant filters by Martin Finke (http://www.martin-finke.de/blog/articles/audio-plugins-013-filter/)
- Implementation of a PolyBLEP oscilator by Martin Finke (my PolyBLEP anti-aliasing is based on this) (https://github.com/martinfinke/PolyBLEP)
- Artical about the chorus effect (https://de.wikipedia.org/wiki/Chorus_(Tontechnik))
- https://www.music.mcgill.ca/~gary/307/week1/node24.html
- http://www.dma.ufg.ac.at/app/link/Grundlagen%3AAudio/module/8086?step=all
- https://electricdruid.net/technical-aspects-of-the-hammond-organ/
- https://www.hackaudio.com/digital-signal-processing/distortion-effects/bit-crushing/
- https://de.wikipedia.org/wiki/Bitcrusher
- https://asa.scitation.org/doi/pdf/10.1121/1.5003796
- https://www.dsprelated.com/showarticle/938.php
- https://math.stackexchange.com/questions/178079/integration-of-sawtooth-square-and-triangle-wave-functions
- https://www.kvraudio.com/forum/viewtopic.php?t=445438
- https://stackoverflow.com/questions/3055815/dsp-filter-sweep-effect
- https://www.electronics-tutorials.ws/de/filtern/passiver-tiefpassfilter.html
- https://medium.com/the-seekers-project/coding-a-basic-reverb-algorithm-part-2-an-introduction-to-audio-programming-4db79dd4e325
- Formant frequencies used for the vocoder (https://en.wikipedia.org/wiki/Formant
- Reddit thread about phasers (https://www.reddit.com/r/DSP/comments/2o2pf6/implementing_guitar_phaser_effect/cmjc70p/)
- Fuzz distortion algorithm (http://www.portaudio.com/docs/v19-doxydocs/pa__fuzz_8c.html)
- SpinLock (https://timur.audio/using-locks-in-real-time-audio-processing-safely)
- Nice forum post about exponential envelopes (https://www.kvraudio.com/forum/viewtopic.php?t=161416)
- Good envelope shape (https://sfzformat.com/opcodes/ampeg_attack)