It doesn’t trigger on things like square wave or sawtooth waves, because those aren’t going back and forth fast enough to be an ess. It keeps a string of recent slew rates, and if it sees high slews that keep going back and forth (flipping direction) that’s how it triggers. The Airwindows DeEss works by tracking slew rates, not by filtering and frequencies. As usual for Airwindows plugin, don’t expect a graphical interface but they are super useful. It’s a new free de-esser plugin for VST/AU. The developer Airwindows is known for its numerous good free plugins for PC & Mac. Airwindows DeEss is a new free open-source de-esser effect plugin for PC & Mac (VST/AU) that doesn’t look shiny but is super helpful!
