Im having trouble removing microphone backround noise. By executing arecord only it shows:
Recording WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
however bacground noise is fixed by changing the sample rate - by executing:
arecord -f dat -r 48000 -D hw:0,0 -d 5 test.wav
Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
is it anyhow possible to change it so it will be changed by default to 48000 via alsamixer? thanks!