ADAU1701 COMPRESSOR SPLINE POINTS

Hello prudensio,

Yes, you can "trick" the compressor to use only one set of values for the spline and then change the threshold of when the compression starts. To do this you use a compressor with an external sidechain input and place a volume control on the audio coming into the sidechain. Then to change the threshold with an external controller all you have to do is send a new value to the volume control rather than a new set of spline curves. You also can use an externally controlled volume control using an AUXADC to get an external control of threshold.

This is what it looks like:

I am attaching an example file. This file uses an ADAU1452 but the same idea applies to the 1701.

Dave T

7774.ADAU1452 Compressor Threshold Control from the sidechain.zip