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My headset was plugged in into internal audio device, capture level sets to maximum and used command:
arecord -c2 -f cd -d 10 internalAudioDeviceNoise.wav
Yes, guys, it's Linux! :-)
So pretty noise generated by very cheap device!
As you can see from the console command, audiofile have the next format: Signed 16 bit Little Endian, Rate 44100 Hz, Stereo, duration 10 seconds.
Type
Wave (.wav)
Duration
0:10.000
File size
1.7 MB
Sample rate
44100.0 Hz
Bit depth
16 bit
Channels
Stereo