switchSound.sh

#!/bin/bash

switchSound() {
    NUMBER=$(pacmd list-sinks | grep "* index" | cut -d ' ' -f 5-);
    echo $NUMBER;
    echo "Setting default sink to: $NUMBER";
    pacmd set-default-sink $NUMBER
    pacmd list-sink-inputs | grep index | while read line
    do
    echo "Moving input: ";
    echo $line | cut -f2 -d' ';
    echo "to sink: $NUMBER";
    pacmd move-sink-input `echo $line | cut -f2 -d' '` $NUMBER

    done

}

ACTIVE=$(pacmd list-sinks | grep -A 1 "* index" | grep "name" | cut -d ' ' -f 2-)

if [ "$ACTIVE" = "<alsa_output.pci-0000_00_1b.0.analog-stereo>" ] ; then
    #usb
    pacmd set-card-profile 1 "output:analog-stereo+input:analog-stereo"
    pacmd set-default-sink "alsa_output.usb-Generic_Turtle_Beach_P11_Headset_0000000001-00.analog-stereo"
    # 
    #usb s/pif
    #pacmd set-card-profile 1 "output:iec958-stereo+input:analog-stereo"
    #pacmd set-default-sink "alsa_output.usb-Generic_Turtle_Beach_P11_Headset_0000000001-00.iec958-stereo"
    #
    #hdmi
    #pacmd set-card-profile 0 "output:hdmi-stereo+input:analog-stereo"
    #pacmd set-default-sink "alsa_output.pci-0000_00_1b.0.hdmi-stereo"
else
    pacmd set-card-profile 0 "output:analog-stereo+input:analog-stereo"
    pacmd set-default-sink "alsa_output.pci-0000_00_1b.0.analog-stereo"
fi

switchSound

parte do código fonte veio dessa URL: http://askubuntu.com/questions/71863/how-to-change-pulseaudio-sink-with-pacmd-set-default-sink-during-playback