Democracy DEV


A Raspberry Pi + FPGA Platform for Real-time Embedded Audio Processing

View all updates Dec 07, 2016

Pure Data Synth on Democracy

Hi everyone!

This second update focuses on an example of a very simple synthesizer modeled in Pure Data.

The video shows that you can build and execute your patch on your host computer and then, as soon as you are happy with the results, you can download the patch and run real time on Democracy! You can connect a MIDI controller to Democracy and play your synth. You could also tune parameters run time by using some dedicated control pads or devices connected to the board.

In our demo video, a touch keyboard with MIDI out capabilities running on iPad is used to send out MIDI notes to Democracy. The iPad is connected to Democracy through the iRig MIDI device. But any kind of MIDI controller could be used to play the Pure Data synthesizer on Democracy.

You can download the Pure Data patch of the example synth from here.

Please don’t hesitate to reach out to us with any comments or questions!

Also, please help us by sharing the campaign page link with anyone willing to support our project!

$3,919 raised

of $56,000 goal

7% Funded Time Expired
Dec 18 2016

Product Choices


Democracy DEV Board

One Democracy DEV board. Democracy is an open Raspberry Pi 3 + FPGA Platform for Real-time Embedded Audio Processing. Including analog and MIDI I/O for audio processing, footswitch pedal inputs, and a universal control pedal interface for In/Out expression control purposes. $299 USD is a campaign-only exclusive price. Orders placed after the campaign ends will cost $349 USD, and the boards will eventually retail for $399 USD.



We create highly portable and embeddable digital audio systems for sound analysis, emulation and synthesis.

Alberto Dassatti


Alexandre Malki


Anthony Convers


Florian Vassaurd


Luciano Ciamarone


Marco De Dominicis


Michel Starkier


Steve Maillard


Vincenzo Pallotta


See Also

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