I’m trying to setup a PI 4 with the Matrix Creator, so far so good I’m able to play with the led successfully but now I’m trying to get the mic array working, but it doesn’t work
I’ve followed this doc https://matrix-io.github.io/matrix-documentation/matrix-creator/resources/microphone/
But the arecord command doesn’t work
arecord recording.wav -f S16_LE -r 16000 -d 5 arecord: main:828: audio open error: Device or resource busy
Anyone have an idea ?