Yes, I was able to use both I2S interfaces on the ESP32, and was successful in simultaneously capturing four channels of audio. It did take some experimenting with bits to get both interfaces to work properly. I'm happy to share code if you'd like.

Thanks for that very helpful clarification. I'll give it a try!

As far as I know, there's no reason you can't use it, but there's only one audio PLL, so you likely can't use it to record a stream on a random sample rate. Not sure how the driver implements it, but I'd guess you should be fine if you use a sample rate derived from the main PLL, or the same sample...

Hi all, I've been working with a pair of INMP441 MEMS microphones, and the ESP32 has no problem capturing audio from them, and subsequently writing that to an SD card. My current program uses a single I2S channel to capture the data from the two mics, sampling at 44.1 kHz, 16 bits per sample. My que...