Nonlinear Compressor/Expander Classic - Nyquist plug-in for Audacity
The purpose of this compressor is to increase loudness.
The compression curves and control parameters -
threshold and compression ratio - are similar to those of
classic compressor. If compression ratio < 1, it works as expander.
This compressor is easy to use. The result is a kind of psychedelic sound
enhanced with odd overtones.
The theory is here: