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I followed Adafruit's guide for setting up the I2S mic with raspberry pi 3 loaded with precompiled image of Raspbian Jessie for the 3.5in PiTFT.

Also, I'm using another I2S device which is the Speaker Bonnet and it is working fine.

but when recording an audio by:

arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav

and playing the recorded audio which is file.wav by: aplay file.wav, all I get is noise.

bgsuello
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@bgsuello I also faced the similar problem microphone was getting detected and was showing it is recording but it was only recording noise, during playback as well noise only could be heard. Reason behind this for me was as in I2S signal integrity matters, as you must be using jumper wires for connecting microphone with raspberry pi, try use small and good quality wires and I will suggest solder the microphone with single strand wires at the back side of the raspberry pi you will get crisp and clear sound. It worked for me and others as well hope it will help you also.

Swarnam Panday
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