OPTO compressor design
Posted: Wed Feb 26, 2025 5:19 pm
Problem with some of the classic opto compressor designs is slow attack and release time. NSL-33-007 optocoupler has fast rise and decay time. With fast optocoupler attack and release can be controlled almost entirely with the sidechain.
https://mm.digikey.com/Volume0/opasdata ... 33-007.pdf
Here's asidechain I came up with RV1 = Threshold
RV2 = Release
RV3 = attack
RV4 = Ratio
Design of the amplifier part should be fairly trivial. Balanced line receiver at the input, series resistor and LDR to ground, make up gain and DRV134 output.
https://mm.digikey.com/Volume0/opasdata ... 33-007.pdf
Here's asidechain I came up with RV1 = Threshold
RV2 = Release
RV3 = attack
RV4 = Ratio
Design of the amplifier part should be fairly trivial. Balanced line receiver at the input, series resistor and LDR to ground, make up gain and DRV134 output.