audiocomponents

audiocomponents is the part of OmniPython that makes sound: 55 instruments (synthesizers, electromechanical keyboards and drum machines) and 45 effects, pure Python on audiodsp's audio nodes, the same on MicroPython-compatible boards, CircuitPython-compatible boards and a desktop.

pip install -i https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple/ pydevices-audioinstruments pydevices-audioeffects

import mip
mip.install("audioinstruments", index="https://PyDevices.github.io/mip")
mip.install("audioeffects", index="https://PyDevices.github.io/mip")

The first is for a desktop. The second is for a board whose firmware carries audiodsp; Install has the rest.

import wave
import audiocore
import audioeffects
import audioinstruments

RATE = 48000
synth = audioinstruments.create("minimoog", sample_rate=RATE)
echo = audioeffects.create("TapeDelay", synth.output, sample_rate=RATE)
synth.note_on(60)
pcm = bytearray()
for _ in range(100):
    _, block = audiocore.get_buffer(echo.output)
    pcm += bytes(block)
with wave.open("minimoog_delay.wav", "wb") as wav:
    wav.setnchannels(2)
    wav.setsampwidth(2)
    wav.setframerate(RATE)
    wav.writeframes(bytes(pcm))
print(len(pcm) // 4, "frames,", round(len(pcm) / 4 / RATE, 2), "seconds")

25600 frames, 0.53 seconds

That plays middle C on a Minimoog through a tape delay and writes it to minimoog_delay.wav. On a board, hand echo.output to audio_out.play() instead.

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