I2S microphone (RX)

[theronic]

Hi BuddyCasino, I'm trying to get your megaphone example working on the ESP32-LYRATD-MSC, but I'm only getting silence. I've spent a few days trying to cross-correlate what's different in the get-started/player examples and the newer esp-avs-sdk, but I'm only getting silence. Do you perhaps have some pointers or code lying around for the LYRATD?

You might want to take a look at my megaphone example.

[BuddyCasino]

Sorry no, I don't have a Lyra.

[fly135]

Now, I've only managed to get perfect I2S sound for sampling rate 8 kHz. From my experience with other I2S drivers (for H3 boards), it's a matter of proper clock handling. Probably some I2S master clock is too slow - maybe it didn't expect any sampling faster than 8 kHz? Anyway, I did not delve into it.

Just for reference I've had no problems capturing at 16Khz. However, If you try to capture and send in the same thread I would expect to have performance issues.

I just ordered a LyraT from China. Expect to get it in a couple weeks.

John A