Bash script to increase volume beyond 100%. Used as a keyboard shortcut replacement for "Volume up" in Ubuntu.

raise_volume.sh

#!/usr/bin/env bash

max=153

current_volume () {
  pactl list sinks | grep -o "Volume: 0:[[:space:]]\+[0-9]\+" | sed 's/.*[[:space:]]//'
}

muted () {
  pactl list sinks | grep "Mute: yes" > /dev/null
}

new_volume () {
  cv=$( current_volume )
  if muted && [ $cv -gt 0 ]; then
    echo $cv
  else
    cv=$(( $cv + 10 ))
    if [ $cv -gt $max ]; then
      echo $max
    else
      echo $cv
    fi
  fi
}

set_volume () {
  pactl set-sink-volume 0 $1%
  pactl set-sink-mute 0 0
}

icon () {
  if [ $1 -lt 30 ]; then
    level=low
  elif [ $1 -lt 70 ]; then
    level=medium
  else
    level=high
  fi
  echo notification-audio-volume-$level
}

notify_volume_change () {
  notify-send " " -h string:synchronous:volume -i $( icon $1 ) -h int:value:$1
  playsound_simple /usr/share/sounds/freedesktop/stereo/audio-volume-change.oga > /dev/null
}

nv=$( new_volume )
set_volume $nv
notify_volume_change $nv