I have connected a usb sound card to my rpi 3 model B but the problem is even though the speaker connected through the sound card is working the mic is not. If I try
arecord -d 10 -D hw:0,0 -r 16000 -f S16_LE -c1 /home/pi/mic-test.wav
arecord --device=hw:0,0 --format S16_LE --rate 44100 -c1 test.wav
I get only noise which is there even if I remove the mic from the sound card
I have made the USB audio card index = 0 Please help.