USER        PID ACCESS COMMAND
/dev/snd/controlC4:  tony       2792 F.... pulseaudio
/dev/snd/controlC3:  tony       2792 F.... pulseaudio
/dev/snd/controlC1:  tony       2792 F.... pulseaudio
/dev/snd/controlC2:  tony       2792 F.... pulseaudio
/dev/snd/controlC0:  tony       2792 F.... pulseaudio