FreeDSP: A Low-Budget Open-Source Audio-DSP Module

Sebastian Merchel; Ludwig Kormann
DAFx-2014 - Erlangen
In this paper, the development and application of a universal audio-DSP (digital signal processor) board will be described. It is called freeDSP. Our goal was to provide an affordable real-time signal processing solution for researchers and the do-it-yourself community. Easy assembling and simple programmability were the main focus. A solution based on Analog Devices’ ADAU1701 DSP chip together with the free graphical development environment SigmaStudio is proposed. The applications range from active loudspeaker compensation over steerable microphone arrays to advanced audio effect processors. The freeDSP board is published under a creative commons license, which allows the unrestricted use and modification of the module.