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atomic14 / esp32_audio

Sample code for reading audio samples from the ESP32 ADC using I2S
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ADC i2s sampling is not continuous #23

Open Ramunas9 opened 2 years ago

Ramunas9 commented 2 years ago

I am using MAX9814 mic with ESP32 38 pin board, and i2s_sampling project from this repository. Mic is connected to ADC7 However, audio recording is not continuous, between each audio sample, while ESP32 is sending data to the server, recording is not performed simultaniously. So final audio has missing audio. I am using the same parameters as in your repo code, I did not change sampling code.

I tried enumerating packets and time when they were sent and it seems that some not recorded time is missing: 27: 397959 28: 399442 29: 400861 30: 402280 31: 403699 32: 404926 33: 406151 34: 407634 35: 408860 36: 410280 37: 411699 38: 412923 39: 414343 40: 415568 41: 416794 42: 418085 43: 419504 44: 420923

It seems that your code is simpler and different from video explanation, and I don't quite understand how code knows when to read buffers. Maybe sending audio actually stops recording, ESP32 has two cores maybe tasks are not divided? I am rather new to ESP32 programing.

I also get a lot of static noise, but I think it is not related to this problem.

User-0041 commented 4 months ago

Hi so i am having the same issue and i wana know did you find a fix for it