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Adaptive Algorithm for Detecting and Reducing Sibilants in Recorded Speech

Different concepts for reducing sibilants in recorded speech have been developed and have been successfully implemented as 'De-Esser' hardware. Most of them are working in the analog domain, only a few implementations using adaptive mechanisms. Therefore a digital algorithm is introduced which basically uses psychoacoustic and physical units to detect sibilancy and to adapt a time-variant bandpass filter to perform the de-esser operation.

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