Recording each channel without mixing

问题

I am a new in this field, maybe what I ask it's impossible to implement.

What I try to do is - recording an audio with n-channels to WAV file with n-channels.

I use arecord utility:

arecord --format=S16_LE --channels=8 --rate=16000 --file-type=wav myfile.wav

In my input I see different channels:

But in output of recording I see all channels are mixed:

Is it possible to record WAV file without mixing channels? Is it possible to record each channel to separate channel?

来源：https://stackoverflow.com/questions/65439370/recording-each-channel-without-mixing