DSPi – A powerful, open-source DSP

DSPi is a firmware that transforms a Raspberry Pi Pico or Pico 2 (RP2040 or RP2350) into a very competent, extensible and inexpensive little digital audio processor. It acts as a USB sound card with an onboard DSP engine, allowing you to make use of essential tools like room correction, active crossovers, parametric EQ, time alignment and more.