PlaybackBuiltinAudioAnalogStereoPulseAudioMixer
ALSA:dmix:CARD=PCH,DEV=3
sudo bash gnome-control-center sound pavucontrol aplay /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/fc.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
speaker-test -c 2 -r 48000 -D hw:0,3 aplay -D plughw:0,3 /fc.wav alsamixer
ubuntu version
# lsb_release -a Ubuntu 12.04.3 LTS precise