Invention Grant
- Patent Title: Techniques for distortion reducing multi-band compressor with timbre preservation
-
Application No.: US15873814Application Date: 2018-01-17
-
Publication No.: US10256785B2Publication Date: 2019-04-09
- Inventor: Alan Jeffrey Seefeldt
- Applicant: Dolby Laboratories Licensing Corporation
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Agent Roger S. Sampson
- Main IPC: G06F17/00
- IPC: G06F17/00 ; H03G9/10 ; H03G9/00 ; H03G9/02 ; H03G9/18 ; H04R3/04

Abstract:
Distortion reducing multi-band compressor with timbre preservation is provided. Timbre preservation is achieved by determining a time-varying threshold in each of a plurality frequency bands as a function of a respective fixed threshold for the frequency band and, at least in part, an audio signal level and a fixed threshold outside such frequency band. If a particular frequency band receives significant gain reduction due to being above or approaching its fixed threshold, then a time-varying threshold of one or more other frequency bands are also decreased to receive some gain reduction. In a specific embodiment, time-varying thresholds can be computed from an average difference of the audio input signal in each frequency band and its respective fixed threshold.
Public/Granted literature
- US20180152166A1 TECHNIQUES FOR DISTORTION REDUCING MULTI-BAND COMPRESSOR WITH TIMBRE PRESERVATION Public/Granted day:2018-05-31
Information query