[ecasound] inverse gate

 hello,
 am trying to process some audio with an inverse gate effect.
 that is, a filter which only allows the audio below a certain theshold
 to pass (perhaps this has another name).

 i thought that maybe i could just use a regular gate such as
 -enm:0.8,10,150,150,20
 then bounce the result down to a file - then mix that file with a phase
 inverted version of the original to cancel out the common samples
 this did not work for me (to invert the phase i muliplied the gain by
 -1 in sox)
 there must be an easier approach?
 is there some negative value i can give to the normal gate filter to
 make it work the other way around?
 any ideas?
 thanks

 rob

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Received on Mon Sep 19 16:15:02 2011