This version is outdated by a newer approved version.
This version (03 Oct 2018 22:31) was approved by Chad Wentworth.The Previously approved version (10 Jul 2018 21:32) is available.
This version (03 Oct 2018 22:31) was approved by Chad Wentworth.The Previously approved version (10 Jul 2018 21:32) is available.This is an old revision of the document!
Table of Contents
MIDI Virtual Analog Synth (Core1) /Effects (Core 2)
For this final example the full virtual analog synth is run on Core1 and the effects chain is run on Core 2.
Part of this example will run on core 2 so be sure to set the following #define in audio_system_config.h
#define USE_FAUST_ALGORITHM_CORE2 TRUE
The Faust Code
Virtual Analog Synth (Core 1)
Multiple examples for the SHARC audio module have been put together and hosted on github. In order to successfully run this example, please clone this repository.
For this particular example workflow, we will be looking at the virtualAnalog example from the git repository.
- Open the Faust online editor.
- You can copy the contents into the editor 2 different ways
- Name the *.dsp file virtualAnalogForBrowser.dsp. and copy the contents of virtualAnalogForBrowser.dsp into the online editor.
- Drag the virtualAnalogForBrowser.dsp file into the tile bar of the editor
- Compile and run the Faust program using the
button
Note this may take about a minute to compile and run
Effects Chain (Core 2)
Multiple examples for the SHARC audio module have been put together and hosted on github. In order to successfully run this example, please clone this repository.
For this particular example workflow, we will be looking at the virtualAnalog example from the git repository.
- Open the Faust online editor.
- You can copy the contents into the editor 2 different ways
- Name the *.dsp file virtualAnalogWithEffectsForBrowser.dsp. and copy the contents of virtualAnalogWithEffectsForBrowser.dsp into the online editor.
- Drag the virtualAnalogWithEffectsForBrowser.dsp file into the tile bar of the editor
- Compile and run the Faust program using the button
Note this may take about a minute to compile and run
Looking at the Block Diagram
Virtual Analog Synth
The block diagram button 
can be used to generate a hierarchical block diagram for an algorithm. This block diagram is hierarchical. Here are a few of the hierarchical levels:
Effects Chain
The block diagram button can be used to generate a hierarchical block diagram for an algorithm. This block diagram is hierarchical. Here are a few of the hierarchical levels:
Creating Files for use with the Baremetal Framework
- Click the
Export/compile to a specific platformbutton
- In the first dropdown box, choose
sam - In the second dropdown box, choose
sam-source-poly-1(core 1) orsam-source-midi(core 2) and then Export:
faust2sam will generate the following three C++ source files, which is the algorithm.
fast_pow2.hsamFaustDSP.cppsamFaustDSP.h
- Click on the QR code that shows to download the files
- These 3 source files can be copied to the Faust directory in the CCES framework. The framework can then be compiled and downloaded to the SHARC Audio Module.
The files created from the Virtual Analog Synth project should be placed in the faust folder for Core1 and the ones from the Effects Chain should be placed in the faust folder for Core2
- See Faust with the CCES Bare Metal Framework for more information
MIDI Assignments for the Virtual Analog Algorithm
| Function | MIDI CC | Module | Type | Notes |
|---|---|---|---|---|
| Tune | 47 | 1 - Controllers | knob | Master tuning |
| Glide | 5 | 1 - Controllers | knob | Portamento time |
| Modulation Mix | 48 | 1 - Controllers | knob | Modulation mix between OSC3 and Noise |
| Oscillator Modulation | 22 | 2 - Oscillator Bank | switch | Enable modulation control of OSC frequencies |
| OSC 1 Range | 23 | 2 - Oscillator Bank | knob | OSC 1 range |
| OSC 1 Detune | 24 | 2 - Oscillator Bank | knob | OSC 1 detuning |
| OSC 1 Waveform | 25 | 2 - Oscillator Bank | knob | OSC 1 waveform shape |
| OSC 2 Range | 28 | 2 - Oscillator Bank | knob | OSC 2 range |
| OSC 2 Detune | 29 | 2 - Oscillator Bank | knob | OSC 2 detuning |
| OSC 2 Waveform | 30 | 2 - Oscillator Bank | knob | OSC 2 waveform shape |
| OSC 3 Range | 33 | 2 - Oscillator Bank | knob | OSC 3 range |
| OSC 3 Detune | 34 | 2 - Oscillator Bank | knob | OSC 3 detuning |
| OSC 3 Waveform | 35 | 2 - Oscillator Bank | knob | OSC 3 waveform shape |
| OSC 3 Control | 9 | 2 - Oscillator Bank | switch | OSC 3 as a control signal or as an audio source |
| OSC 1 Amp | 26 | 3 - Mixer | knob | OSC 1 gain |
| Osc1 mixer switch | 12 | 3 - Mixer | switch | OSC 1 enable |
| OSC 2 Amp | 31 | 3 - Mixer | knob | OSC 2 gain |
| Osc2 mixer switch | 14 | 3 - Mixer | switch | OSC 2 enable |
| OSC3 Amp | 36 | 3 - Mixer | knob | OSC 3 gain |
| OSC3 mixer switch | 17 | 3 - Mixer | switch | OSC 3 enable |
| External Input amp | 27 | 3 - Mixer | knob | Extrenal input gain |
| External Input mixer switch | 13 | 3 - Mixer | switch | External input enable |
| Noise Amp | 32 | 3 - Mixer | knob | Noise gain |
| Noise mixer switch | 15 | 3 - Mixer | switch | Noise Enable |
| White/pink toggle | 16 | 3 - Mixer | switch | Noise pink/white |
| Filter Modulation Enable | 19 | 4 - Filter | switch | Enable modulation control of the filter cutoff frequency |
|---|---|---|---|---|
| Keyboard Range | 38 | 4 - Filter | knob | Add keyboard control of the filter cutoff frequency |
| Cutoff Frequency | 74 | 4 - Filter | knob | Filter cutoff frequency |
| Emphasis | 37 | 4 - Filter | knob | Filter Resonance (Q) |
| Amount of Contour | 39 | 4 - Filter | knob | Amount of envelope generator |
| Attack Time | 40 | 4 - Filter | knob | VCF envelope generator attack time |
| Decay Time | 41 | 4 - Filter | knob | VCF envelope generator decay time |
| Sustain Level | 42 | 4 - Filter | knob | VCF envelope generator sustain level |
| Attack Time | 43 | 5 - Loudness Contour | knob | VCA envelope generator attack time |
| Decay Time | 44 | 5 - Loudness Contour | knob | VCA envelope generator decay time |
| Sustain Level | 45 | 5 - Loudness Contour | knob | VCA envelope generator sustain level |
| Decay | 20 | 6 - Keyboard | switch | Enables using the decay stage as a release stage |
| Glide | 65 | 6 - Keyboard | switch | Enable portamento |
| Pitch Wheel | pitchWheel | 6 - Keyboard | knob | Pitch Wheel |
| Mod Wheel | 1 | 6 - Keyboard | knob | Modulation Wheel control |
| Sustain | 64 | midi sustain foot pedal | switch | Note sustain, preempts the VCF/VCA release stage |
| Master Volume | 7 | 5 - Output | knob | Master volume |
MIDI Assignments for the Effects Chain Algorithm
| Function | MIDI CC | Module | Type |
|---|---|---|---|
| Invert | 49 | Flanger | knob |
| Enable | 102 | Flanger | switch |
| Delay | 50 | Flanger | knob |
| Rate | 51 | Flanger | knob |
| Depth | 52 | Flanger | knob |
| Feedback | 53 | Flanger | knob |
| Wave Shape | 54 | Flanger | knob |
| Delay | 55 | Chorus | knob |
| Enable | 103 | Chorus | switch |
| Rate | 56 | Chorus | knob |
| Depth | 57 | Chorus | knob |
| Deviation | 58 | Chorus | knob |
| enable | 105 | Echo | switch |
| Delay Portamento | 60 | Echo | knob |
| Delay | 61 | Echo | knob |
| Warp | 62 | Echo | knob |
| Feedback | 2 | Echo | knob |
| Amp | 75 | Echo | knob |
| Feedback sm? | 76 | Echo | knob |
| Damp | 3 | Reverb | knob |
| Enable | 104 | Reverb | switch |
| Room Size | 4 | Reverb | knob |
| Wet Dry | 79 | Reverb | knob |
The Virtual Analog/Effects Chain TouchOSC UI
TouchOSC is a mobile app that can be used to create arbitrary GUIs that send MIDI values. TouchOSC is available for both iOS and Android. A TouchOSC configuration is provided for the Virtual Analog and Effects chain algorithms (virtualAnalog.touchOSC)
The Virtual Analog Page:
The Effects Chain Page:
Navigation - SHARC Audio Module
resources/tools-software/sharc-audio-module/faust/ex-work-virtual-analog.1538598528.txt.gz · Last modified: 03 Oct 2018 22:28 by Chad Wentworth