Fabio wrote:
Em Sat, 25 Dec 2010 16:47:04 +0100
Jörn Nettingsmeier <nettings@xxxxxxxxxxxxxxxxxxxxxx> escreveu:
how you do that? none of the compressors i checked has ability to
use negative ratio.
upwards compression means it elevates volumes below threshold
instead of the "opposite"(lack of word) in normal compression
you can set up two busses, both fed from the signal you want to
up-compress. one is left as-is, and the other is set for compression
at the threshold below which you want the up-compression to set in.
now you mix both buses to the same master. the effect is that at low
levels, both signal paths will be uncompressed and add up. at higher
levels, the compressed signal path is attenuated and adds less gain,
which is the effect you're after.
wow, audio-production is math, too...lol
but man, this will result in a normal compression, only that the ratio
will be lowered.
I mean, lets say we have 4 signals with values: 1 2 4 8
threshold between 2 and 4 give for ex. this: 1 2 3 4
now i add both an divide by 2: 1 2 3.5 6
Compression reduces the dynamic range. Ordinary or "normal" compression
does it by affecting the loudest signals, reducing them in level,
upwards compression does it by boosting the volume of the quietest
signals -- compressing from the bottom up. This parallel processing
produces upwards compression as Joern expounded on my original statement.
You mention a negative ratio: are you perhaps thinking of upward expansion?
Q
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