KVR Audio

puzio · Post by **puzio** » Thu Apr 07, 2005 12:43 pm

hello All
I used compressor/maximizer to get my sound loud . But sometimes I am so tired with compressed sound . So is there any way to decompressor to get brighter
sound with less power ?

thanks and sorry for my english

tkmattson · Post by **tkmattson** » Thu Apr 07, 2005 12:53 pm

puzio wrote:hello All
I used compressor/maximizer to get my sound loud . But sometimes I am so tired with compressed sound . So is there any way to decompressor to get brighter
sound with less power ?

thanks and sorry for my english

How about bypassing the compressor? Or alternatively, an Expander?

Panda · Post by **Panda** » Thu Apr 07, 2005 12:58 pm

The opposite of compression is expanding, and you can do it with any compressor that offers negative ratio values.
I'm not sure i understand what you mean by brighter, but you have to realize tho, that playing with dynamics isn't the same as adjusting volume.

Funkybot · Post by **Funkybot** » Thu Apr 07, 2005 1:12 pm

Do you have access to the original files/projects? If so you could always turn the compressor off. Otherwise there's not much you can do, even expansion (which should be the opposite of compression) will not have the proper effect.

Panda · Post by **Panda** » Thu Apr 07, 2005 2:19 pm

Funkybot wrote:Do you have access to the original files/projects? If so you could always turn the compressor off. Otherwise there's not much you can do, even expansion (which should be the opposite of compression) will not have the proper effect.

True thing, it's impossible to restore a file completely after it's been compressed...

Krakatau · Post by **Krakatau** » Thu Apr 07, 2005 2:29 pm

Wouldn't it be theorically, possible to more or less recover the original signal's dynamics if a significant amount of parameters would be well known ?

as example :

the exact MODEL of compressor used and it's accurate parameters in use in the resulting audiofile ?

valley · Post by **valley** » Thu Apr 07, 2005 2:43 pm

fac · Post by **fac** » Thu Apr 07, 2005 2:50 pm

Wouldn't it be theorically, possible to more or less recover the original signal's dynamics if a significant amount of parameters would be well known ?

Probably not. I would guess that most compressors use some non-invertible processes to obtain the final output.

Maybe you could undo a slight compression applied to a signal, but not high-ratio compression or limiting. And you probably would not be able to obtain the original signal at all, but a degraded version possibly with lots of phase-shifting going around.

Krakatau · Post by **Krakatau** » Thu Apr 07, 2005 2:50 pm

why ?

...sorry, irrelevant after that post !

valley · Post by **valley** » Thu Apr 07, 2005 3:06 pm

the most extreme example, but it makes the case:

take a comrpessor set to hard limit, with a 6db threshold, and send it a square wave that varies in amplitude between - 0db and -6db. At the other side of the compressor you'd have, to all intents and purposes, a -6db square wave. There'd be very few markers to even suggest that compression had taken place, much less where, and how much.

stefancrs · Post by **stefancrs** » Thu Apr 07, 2005 3:12 pm

Also, the amplitude detection is basicly based upon lowpassing the signal. The original envelope is forever destroyed so you can't get that back. Really.

TotcProductions · Post by **TotcProductions** » Thu Apr 07, 2005 3:42 pm

Try PLAYING with more dynamics. Getting these things right in the recording process will yield much better results than fixing them in the mixing process.

Also...i don't think you're looking for compression...although, the negative values approach mentioned in this thread will work...it's possible you're using too much compression...that'll flatten out your transients immediately. Try using an exciter for the dynamic content rather than a compressor

peace!

DECOMPRESSOR PLEASE HELP