audiodsp — CircuitPython-compatible audio for MicroPython and CPython.

# CPython 3.11+ on Linux, Windows, macOS (Apple silicon) and Android
pip install pydevices-audiodsp

# MicroPython 1.29 firmware: clone it, fetch its two pinned dependencies...
git clone https://github.com/PyDevices/audiodsp
audiodsp/scripts/fetch_deps.sh

# ...then add one line to the manifest your build already uses
include("/path/to/audiodsp/manifest.py")

The include brings in the C modules and ulab, so a firmware with audiodsp has ulab.numpy too. audiomp3 is firmware-only. Your own FROZEN_MANIFEST and builds older than 1.29 are covered in the README.

import audiocore
import synthio

synth = synthio.Synthesizer(sample_rate=8_000)
synth.press(69)                     # A above middle C
status, block = audiocore.get_buffer(synth)

The module names are CircuitPython's, so CircuitPython audio code imports unchanged. block is one rendered buffer; on a board, a mixer, the audio pump or audiodev pulls the same graph continuously. For instruments you can play, add audioinstruments and audioeffects on top.

audiodsp is on production PyPI now, so pip install needs no index flags. A firmware build names ulab through audiodsp's own manifest, so one include line brings both. Everything else is in the changelog.