Received audio is only static noise

[ericlindersson]

I have connected everything according to the code, default pin numbers et.c. I can see that data is being received from the mic and being sent. The receiver receives data, but I can only hear a ticking noise from the speaker. I have also tested the components alone and was able to record my voice over UDP, and used the speaker with a webradio sample with success.
I have only tried ESP-NOW, could that be the problem? Or is there anything else I could try?

[meloluan]

I have the same problem, did you manage to solve it?

[FedericoBusero]

The code was not yet compatible with IDF version 4, now it should work again.
Remark that I2S input using INMP441 on ESP32 only works until
platform = [email protected]
which is based on IDF v4.4.1-1-gb8050b365e and Arduino 2.0.3
All later versions contain bugs in the I2S input part on ESP32 so that the microphone no longer works. This is described in espressif/esp-idf#9635 and contains a workaround:
#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_RIGHT
instead of
#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_LEFT
in config.h
There should be a fix in later versions (IDF 4.4.5?)

Remark that on some chips (e.g. ESP32-S2) and in some versions, you can fix microphone issues by setting

Remark also that defines can be set in platformio.ini or config.h : USE_I2S_MIC_INPUT & USE_ESP_NOW are set in platformio.ini