Title:
DISTORTION REDUCING MULTI-BAND COMPRESSOR WITH DYNAMIC THRESHOLDS BASED ON SCENE SWITCH ANALYZER GUIDED DISTORTION AUDIBILITY MODEL
Document Type and Number:
WIPO Patent Application WO/2020/069120
Kind Code:
A9
Abstract:
The present application relates to a method, system, and computer program product of dynamically adjusting thresholds of a compressor responsive to an input audio signal. A scene switch analyzer receives an input audio signal having a plurality of frequency band components. The scene switch analyzer determines whether a scene switch has occurred in the input audio signal. The frequency band components of the input audio signal are processed. In response to determine that scene switch has not occurred, a distortion audibility system applies slow smoothing to compressor thresholds of the frequency band components. In response to determine that scene switch has occurred, the distortion audibility system applies fast smoothing or no smoothing to the compressor thresholds of the frequency band components.
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Inventors:
MA YUANXING (CN)
Application Number:
PCT/US2019/053142
Publication Date:
March 25, 2021
Filing Date:
September 26, 2019
Export Citation:
Assignee:
DOLBY LABORATORIES LICENSING CORP (US)
International Classes:
G10L21/0364; G10L25/18; H03G7/00; H03G9/02
Attorney, Agent or Firm:
MA, Xin et al. (US)
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