Modern audio DSP (Digital Signal Processing) is impressive, and can be used for all sorts of sound alterations that are important to audiophiles. As the name suggests, a DSP is used to digitally process an audio signal, and its usual purpose is to improve the quality of a stereo setup. You could, for instance, use a DSP to direct specific frequencies in music to the ideal speaker, or add a time delay that matches the speaker placement. The freeDSP-aurora DSP is an open source, wireless option that just launched on Kickstarter.
It comes as a PCB — either bare or populated — and it’s up to you to integrate it into your sound system as you see fit. It’s based on an Analog Devices ADAU1452 DSP chip and an ESP32 wireless microcontroller to control it. There are total of eight inputs and eight outputs, so you’ll be able to process an entire 7.1 surround sound stereo. And, it’s part of the open source freeDSP family, which should give you some peace of mind.
The freeDSP-aurora DSP Kickstarter campaign has already reached about half of its $23,821 funding goal, and will continue running until March 22nd. A bare PCB costs $11, while a completely populated and programmed PCB costs $221. Rewards are expected to be delivered in May.