Noise with speaker

[vortex]

Most likely, it audio coupling of the speaker to the microphone, with a lesser chance of being electrical coupling...

Thanks. You have read when i wrote "noise, not echo or reverb" right ? its like the noise of a radio that has no signial...
Important is if it happend only to me...

If you get it when the speaker is muted, it is definite what was in the thread I linked (https://forum.pine64.org/showthread.php?tid=13922). If it is only there when the speaker is operating or is worse, then it is probably electrical coupling.

That all said, there is a way to investigate it. If during a call, you record your phone's microphone to a file, download it to your computer, and look at a powerspectrum of it; there might be some clues. I wrote a convenient tool for the other thread that can help with the power spectrum part, which is pinephone_call_noise_investigation, that when given the recording as a WAV file will plot the spectrogram and optionally write it to a CSV. My most recent powerspectrum looked like



If you get a frequency comb like this, then it is likely you have the same issue or a related one.