Tyson De-Esser

Two independent sibilance bands. The subtractive engine isolates each with a constant-0 dB band-pass and subtracts a fraction back, so the removed signal is exactly x − y.

De-ess (downward, remove) or Enhance (upward, restore). Enhance is a genuine reverse de-esser: the relative detector fires on an “sss” regardless of loudness, so a weak/lispy ess can be lifted back in.

Threshold (relative or absolute) and Range = max action for that band.

Colours the band. CLEAN (centre) leaves it untouched; STONED or RAGE lift it and add a little distortion, RAGE more than STONED. It adds rather than removes, so it keeps presence while de-essing and puts more back when enhancing.

Det Drive gains into the detector (set sensitivity by drive, not threshold). Sat Drive turns Temper up: a bigger lift on the band, up to about 10 dB at full. It does nothing while Temper is at CLEAN.

Relative compares band level to broadband, so it fires on sibilance not loud vowels (the “doesn’t lisp on sustained notes” default). Absolute thresholds the band directly. Gated below −70 dB so silence shows no phantom reduction.

Split subtracts the band (default, phase-correct). Wideband ducks the whole signal by the combined band gain (classic wideband grab). Soften/character apply to the split path only.

Routes what you hear: Process / Detector (the band key) / Suppressor (the removed sibilance - the “am I lisping?” check). Falls out of the same maths, no separate audition DSP.

Scope overlay over a live spectrum with each band’s coverage stripe: Sensitivity (detector level vs threshold, lit bright when triggering) or Reduction (De-ess bar hangs from top, Enhance bar grows from bottom in cyan). Each band also has its own scrolling activity strip.

Lookahead knob (0 ms = off, no separate toggle) delays the through-signal so a fast ess is caught. Key Source Internal/External sidechain.

Reads a bespoke de-ess by track name (getComputedDeEssByName). Measurement-driven: finds each voice’s sibilant peaks where the HF pokes above its own local envelope - two singers at 6 kHz vs 8 kHz get different bands - and sets centre/Q/threshold/range/envelope from how far it pokes and how much of the mix already carries that region. Returns nothing for non-sibilant sources (kick, bass…).

Type a GROUP name and this Tyson joins that vocal stack, telling the others what it's hearing. Tyson Group hands it back a share of the total reduction, eased in smoothly so nothing jumps. It only kicks in once there are two or more members, or a Tyson Group on the bus - a lone de-esser that happens to share a name is left completely alone. This runs alongside the Analyser's AUTO rather than instead of it; use both at once.