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atomic14 / esp32-walkie-talkie

A Walkie-Talkie based around the ESP32 using UDP broadcast or ESP-NOW
MIT License
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Received audio is only static noise #26

Open ericlindersson opened 1 year ago

ericlindersson commented 1 year ago

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 commented 1 year ago

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

FedericoBusero commented 1 year ago

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 = espressif32@5.0.0 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 https://github.com/espressif/esp-idf/issues/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