公开(公告)号：US20190074805A1

公开(公告)日：2019-03-07

申请号：US15698193

申请日：2017-09-07

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Ziad Hatab ,  Eric Lindemann ,  John Melanson

IPC: H03G1/04 ,  H04R3/00

Abstract: Audio distortion by a speaker may be reduced by detecting onset audio events within an audio signal and modifying the audio to reduce the audio distortion perceived by a listener. The onsets may be detected using a psych-acoustic model by determining critical sub-band powers and corresponding masking thresholds. When a loudness value calculated from the CSBs and masking thresholds exceeds a threshold level, certain frequency bands may be attenuated and other frequency bands may be amplified. The audio modification may be performed on a frame-by-frame basis and each frame may be processed multiple times until the onset is sufficiently masked or attenuated.