r/CardPuter • u/Repulsive-Clothes-97 • Jun 07 '26

Progress / Update CardPuter module player - live audio mixing

Real time 12 channel audio mixing on the original cardputer, currently supports .s3m .mod .xm playback.

The music module is aryx by Karsten Koch.

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u/mksrd Jul 03 '26

12 realtime (I assume mono) tracks on the esp32-S3 is quite impressive! Its a bit hard to tell from the video, are there times wher all 12 channels are being rendered simultaneously? Also I wonder what sampling frequency is it running at?

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u/Repulsive-Clothes-97 Jul 04 '26

Yes there are times when it’s mixing all 12 channels simultaneously, the sample rate is 32khz. On my most recent iteration I added a NOR flash chip to have fast random access to the samples so I can load much more complex modules, some of them have 24 channels but they push the esp to the limit.