Home
FPGA (a digital Field Programmable Array) based modular synth.
Documentation in Russian is on the site
I'm doing an open source project of the hardware platform for creating digital and analog synthesizers. The project consists of modules from which (as of bricks), you can create your desired synthesizer (Mono Synth, Poly Synth, Organ, etc).
License GPLv3.
Generating Unit:
- 16 Polyphonic
- Every vote - two generators with a detuning frequency, phase, and pan control
- Selectable and configurable modes: one voice, unison, polyphonic
- Switching waveform of each generator: sine, triangle, saw, square, PWM, supersaw.
- External analog VCA controlled PWM with FPGAs
- External analogue VCF controls the frequency with FPGAs
- LFO inside the FPGA
- ADSR inside the FPGA
- Additional modules within the FPGA to emulate a fully digital VCA and VCF with the output of the FPGA (lo fi quality)
Control and display unit:
- May be completely absent - version of the synthesizer as a rack unit, fully managed by MIDI, having only audio outputs
- Analogue controls (variable resistors) with control in one direction (Control unit - Generating unit)
- Digital controls (encoder) + position indicators, with the ability to control in both directions (with the ability to save and restore the position of the controls)
benches - Test modules, which I check the work of the individual modules. Use Icarus Verilog
Modules - modules are the building blocks of the synthesizer (common to all synthesizers)
ModuleTester - Test project in the Quartus 11 in which I insert the test module, load it and compile inputs to determine its size in cells, memory multipliers, as well as the maximum frequency
ModuleTesterIcarus - Test project in the Quartus.
Samples - WAV samples for development.
schemes - Shemes of hardware modules (audio_out, midi_in, VCF etc).
VitaPolyOne - Quartus project of synthesizer VitaPolyOne
wiki - Files for wiki
