#!/bin/bash
output=${1:-podcast}
arecord -Dpulse_monitor -f cd ${output}_sc.wav &
arecord -Dpulse -f cd ${output}_mic.wav 
ffmpeg -i ${output}_mic.wav -i ${output}_sc.wav -filter_complex amerge -ac 2 -c:a libmp3lame -q:a 4 ${output}.mp3

today=$(date +%Y%m%d-%H%M);
mkdir -p "podcast.$today" 
mv podcast.$today podcasts/;
mv -v ${output}_sc.wav podcasts/podcast.$today/${output}_sc.$today.wav;
mv -v ${output}_mic.wav podcasts/podcast.$today/podcast_mic.$today.wav;
mv -v ${output}.mp3 podcasts/${output}.$today.mp3;