It would be useful to add the possibility of a sidechain to the compand/mcompand effects, e.g. for applications of 'ducking', 'dj talkover' or 'de-essing'. One suggestion on the sox-list (thread: "sidechaining in sox?") was to change the compand/mcompand effect so that it could take its volume measurement (level detection) in one channel, while acting on different (or all) channels.
Marlon
...just checking back (since it's been more than a year since the post already) whether this feature is being considered to be implemented anytime soon :)
...just checking back again (since it's > 2 years since the original post) whether there's still hope for this feature to be implemented..
This would be a great feature. If you could do effects on the sidechain that's be excellent, i.e. equalizer with a tight Q on a frequency to trigger specific bands of the mcompander.
SoX is great fun BTW + I use it for broadcast too. Thank you.