The De-Esser uses a unique technology to reduce sibiliance in a mix or on vocal tracks. It automatically detects and hones in on the sibilant frequencies leaving neighboring frequencies unaffected. These S-sounds are mixed back into the main signal phase-inverted to cancel out the sibilance.
The result is a sound-neutral, inconspicuous and extremely effective process. Even at high S-Reduction values the de-essing has an egligible effect on the character and timbre of the voice.