PulseAudio volume command for key shortcuts

volume

#!/usr/bin/env bash
export LANG=C.utf-8

SPEAKERS=alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink
MIC=alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp_6__source

if [[ $1 == "+" ]]; then
  # pacmd dump|awk --non-decimal-data '$1~/set-sink-volume/{system ("pacmd "$1" "$2" "$3+2000)}' > /dev/null
  volume=$(pactl get-sink-volume $SPEAKERS | head -n1 | cut -f3 -d' ')
  pactl set-sink-volume $SPEAKERS $(($volume+2000))
elif [[ $1 == "-" ]]; then
  # pacmd dump|awk --non-decimal-data '$1~/set-sink-volume/{system ("pacmd "$1" "$2" "$3-2000)}' > /dev/null
  volume=$(pactl get-sink-volume $SPEAKERS | head -n1 | cut -f3 -d' ')
  pactl set-sink-volume $SPEAKERS $(($volume-2000))
elif [[ $1 == "mute" ]]; then
  # pacmd dump|awk --non-decimal-data '$1~/set-sink-mute/{system ("pacmd "$1" "$2" "($3 == "yes"?"no":"yes"))}' > /dev/null
  if [[ "$(pactl get-sink-mute $SPEAKERS)" == "Mute: no" ]]; then
    pactl set-sink-mute $SPEAKERS yes
  else
    pactl set-sink-mute $SPEAKERS no
  fi
elif [[ $1 == "mutemic" ]]; then
  #pacmd dump|awk --non-decimal-data '$1~/set-source-mute/{system ("pacmd "$1" "$2" "($3 == "yes"?"no":"yes"))}' > /dev/null
  if [[ "$(pactl get-source-mute $MIC)" == "Mute: no" ]]; then
    pactl set-source-mute $MIC yes
  else
    pactl set-source-mute $MIC no
  fi
else
  echo "Usage: volume [+|-|mute|mutemic]"
fi