posted 29 March 2003 19:52            

dualcompressor.kym

Kyma normally has the output of the compressors down by a factor of 3 because they attenuate the input by that much before entering the compressor. This sound continues that practice.

If you need to adjust the postgain of this dual compressor, do it with a Gain block instead of fiddling with the Gain field in the compressors.

It turns out that you can run the Kyma compressors just fine with ratios less than 1. I didn't realize that for the longest time! But now that we can do such a thing, we can create a dual slope compressor by compressing the sound with R2 after first attenuating the input by a specific amount. Then the second compressor inverts that first compression and applies its own compression ratio. Finally the initial attenuation is removed. In the first compressor the threshold used is actually the stated threshold (T2) and a little lower by the same amount as the input attenuation.

The input attenuation, T2 threshold reduction, and postgain works out to the value of (T1 * (1 - R2/R1)) dB.

- DM

[Soundfile uploaded again... always some little detail slips by me... it is fixed now... (Smalltalk precedence-less syntax!)]