#!/bin/sh

sleep 3

source_name="master-mono"

source_index=$(pactl list short sources |
	grep "input.*pci-" |
	head -n 1 |
	awk '{print $1;}')

echo "${source_index}"

pactl load-module module-remap-source \
	"source_name=${source_name}" \
	"master=${source_index}" \
	channels=1 \
	master_channel_map=front-left \
	channel_map=mono

pactl set-default-source "${source_name}"