[SoX-users] compand for rock concerts

[Wesley C. <we...@se...>]

I've got some recordings of concerts to which I'd like to apply range  
compression. I've found that if I just increase the volume on the  
recording, drums and clapping tend to blow out the ear drums while  
listening with headphones... until I found sox's handy compand command!

(I'd never been able to get Audacity's range compression to work, but  
that's another problem)

I'm using this filter from the sox man page "to make a piece of music  
with both quiet and loud passages suitable for listening to in a noisy  
environment such as a moving vehicle":

compand 0.3,1 6:-70,-60,-20 -5 -90 0.2

And it seems to work reasonably well. Not being an audio engineer  
myself, I don't really understand what any of those numbers mean. Can  
someone suggest a better set of values to try?


Thanks,
Wes