This page introduces the usage of DMIC ，and guide you to record with DMIC.
Please make sure you use the latest image, if not please follow Upgrade The System to upgrade your system.
$ arecord -D hw:0,4 -r 48000 -f S16_LE -c 2 -d 10 test.wav Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo $ ls test.wav test.wav