If you need a De-Esser in Buzz you can switch it together in Buzz
(takes a high pass filter, a phase inverter, some gain and a gate and so on...)
or use the "mda De-Esser", download from www.mda-vst.com -
"mda De-Esser" is a VST plugin that works within Buzz
by loading it into the "RnZnAnFn VST effect adapter".
The first parameter, "Threshold" sets the minimum level at which the
De-Esser starts to filter out the high frequencies,
"Freq" sets the corner frequency of the highpass, and "HF drive" controls
the gain of the pre-amplification of the high frequencies.
You can even achieve special effects like "soft-limiting" the highs be
setting a high amplification gain and the like.
Very usefull for removing "artifacts" like "hissing" or for "smoothening"
signals that sound too harsh.