Should probably escape those quotes...
-async 1 makes the audio sound terrible. Don't use it!
Depend directly on bash instead of cheating.
Add post-processing after stopping the recording.
New dependency added to readme.
It helps to name the function the same as what it is being called as.
lavfi is a format, not an input
Use a more sane default quality.
add --norm to sox parameters, fixes halved volume

By default sox divides the volume by the number of files mixed in order to prevent clipping. Adding --norm to its parameters will normalise the volume while preventing clipping
Merge pull request #1 from sflavelle/patch-1

add --norm to sox parameters, fixes halved volume