Transforming Raspberry Pi into a USB Sound Card with DSPi Firmware

Innovative Audio Processing with Raspberry Pi

The newly released DSPi firmware is set to revolutionize how users interact with audio on Raspberry Pi devices. This advanced firmware transforms the Raspberry Pi Pico, Pico 2, and other RP2040/RP2350 boards into USB sound cards equipped with an integrated Digital Signal Processor (DSP). With this upgrade, users can leverage powerful audio processing tools including room correction, active crossovers, and parametric equalization.

Key features of the DSPi firmware include dual-core DSP functionality, which allows for efficient EQ processing across both cores of the RP2040 and RP2350. It supports a wide range of audio formats, offering 16-bit and 24-bit PCM input at various sampling rates, and is compatible with major operating systems such as macOS, Windows, Linux, and iOS. Additionally, it provides S/PDIF input and multiple output channels, including a dedicated subwoofer output, making it a versatile solution for audio enthusiasts.

Source: CNX Software – Embedded Systems News (https://www.cnx-software.com/2026/10/07/dspi-firmware-turns-raspberry-pi-rp2040-rp2350-into-a-usb-sound-card-with-an-onboard-dsp-engine/)