Multiband Compressor side chaining

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are you familiar with side chaining technique with a compressor?
a sound's volume reduced by the volume of another sound.
this is the same but with a multiband compressor with much more bands (FFT)
for example 256 FFT. it makes a cleaner sound on sound
and i think it's a hard one since it has 2 inputs and lot's of bands
similar compressor parameters