DSPi: A fully featured audio DSP firmware for the Raspberry Pi Pico (RP2040) and Pico 2 (RP2350)
The DSPi firmware transforms a Raspberry Pi Pico or other RP2040-based board into a digital audio processor with various features like room correction and parametric EQ. It acts as a USB sound card with an onboard DSP engine, allowing for essential tools like loudness compensation and headphone crossfeed. The firmware supports multiple platforms, including macOS, Windows, Linux, and iOS, and offers a range of features like per-channel preamp, matrix mixer, and volume leveller.
- ▪The DSPi firmware supports 16-bit and 24-bit PCM input at 44.1, 48, and 96 kHz sample rates.
- ▪It has a 24-bit S/PDIF or I2S output with up to four independent stereo output slots.
- ▪The firmware has a parametric equalization feature with up to 10 PEQ bands per channel and 6 filter types.
Opening excerpt (first ~120 words) tap to expand
DSPi Firmware DSPi transforms a Raspberry Pi Pico or other RP2040-based board into a very competent 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, loudness compensation, and headphone crossfeed. It is my hope that the RP2040 and RP2350 will garner a reputation as the "swiss army knife of audio for less than a cup of coffee".
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.