I do this with `audiomixer` Set the | adafruit | Page 1

muted comet Dec 8, 2022, 2:48 AM

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Thanks @plain sapphire ! To read audio from an sd card, would you do something like this?

...... load sdcardio....
f = open("sd/cplay-5.1-16bit-16khz.wav", "rb")
wav = audiocore.WaveFile(f)
a = audiobusio.I2SOut(board.D1, board.D0, board.D9)

plain sapphire Dec 8, 2022, 6:10 AM

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yep! but you may have problems. last I checked there was some issues inside CircuitPython. Here's the code i was using https://github.com/todbot/circuitpython-tricks/blob/main/larger-tricks/i2s_sdcard_pico.py

muted comet Dec 8, 2022, 3:26 PM

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Thanks @plain sapphire what type of issues do you mean? With that code example?

plain sapphire Dec 8, 2022, 4:19 PM

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some of it is documented in that code example (crashing of CirPy with continuous audio hiss), but if I recall, the main problem was lots of clicks and pops while playing. Sounded like pulling data off the SD card then feeding it to the audio system was just too slow

muted comet Dec 8, 2022, 4:34 PM

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Are there any solutions that might correct those issues? Maybe reading into local flash from SD and then streaming? I'm using an ESP32-S2 with 4MB Flash, so could maybe split up the wav

muted comet Dec 8, 2022, 5:11 PM

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Also, if you don't mind me asking, what audio driver IC were you using?

main sundial Dec 8, 2022, 7:14 PM

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muted comet Also, if you don't mind me asking, what audio driver IC were you using?

the example code says PCM5102

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an I2S chip

plain sapphire Dec 8, 2022, 11:30 PM

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yep, that standard PCM5102 moduile

#I do this with `audiomixer` Set the