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Published 20 hours ago • verified publisher icon arduino

PDM sound with high sizzle on RP2040

Open nerodu opened this issue 3 years ago • 2 comments

Hi, I'm working a project with a stereo PDM microphone(MP34DT06J x 2) with RP2040. Thanks for the PDM library, and I get record voice now. However, I find the voice has high frequence sizzle noise when play. When record, I am in quiet environment. So I think maybe I can modify some parameters of OpenPDMFilter.c. But it looks difficult for me, because I am not clear with the meaning of each parameters... Could you give some suggestion about this~~

nerodu avatar Apr 02 '22 01:04 nerodu

d6d8ac8de431d4f5d928e8ed28a3973

This is a quiet record without voice. left and right channel looks have many noise. Does the library support wave filter?

nerodu avatar Apr 02 '22 02:04 nerodu

were you using different pio program to multiplex stereo pdm data on one pin?

cdowd9556 avatar Mar 31 '23 16:03 cdowd9556