Created
May 19, 2025 19:38
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CircuitPython Pico 2 RP2350 audio playback example at 44.1kHz 16-bit
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| import time | |
| import board | |
| import audiocore, audiobusio, audiomixer | |
| SAMPLE_RATE = 44100 | |
| BUFFER_SIZE = 2048 | |
| CHANNEL_COUNT = 2 | |
| i2s_bck_pin = board.GP20 | |
| i2s_lck_pin = board.GP21 | |
| i2s_dat_pin = board.GP22 | |
| audio = audiobusio.I2SOut(bit_clock=i2s_bck_pin, word_select=i2s_lck_pin, data=i2s_dat_pin) | |
| mixer = audiomixer.Mixer(sample_rate=SAMPLE_RATE, channel_count=CHANNEL_COUNT, buffer_size=BUFFER_SIZE) | |
| audio.play(mixer) | |
| mywav = audiocore.WaveFile("48254__digifishmusic__nylon-guitar-loop-b-1.wav") | |
| mixer.voice[0].level = 1.0 | |
| mixer.voice[0].play(mywav, loop=True) | |
| while True: | |
| print("hi", time.monotonic()) | |
| time.sleep(0.3) |
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Uses a the WAV file "48254__digifishmusic__nylon-guitar-loop-b-1.wav" downloaded from https://freesound.org/people/digifishmusic/sounds/48254/ with no post-processing.
Video demo of the above code, recording line-in directly into an iPhone with a Synido Live Dock 10:
05192025_124424.mp4