Invention Grant
US09130527B2 Method and system for controlling distortion in a critical frequency band of an audio signal
有权
用于控制音频信号的临界频带中的失真的方法和系统
- Patent Title: Method and system for controlling distortion in a critical frequency band of an audio signal
- Patent Title (中): 用于控制音频信号的临界频带中的失真的方法和系统
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Application No.: US13814615Application Date: 2011-08-11
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Publication No.: US09130527B2Publication Date: 2015-09-08
- Inventor: Guillaume Potard
- Applicant: Guillaume Potard
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- International Application: PCT/US2011/047333 WO 20110811
- International Announcement: WO2012/024144 WO 20120223
- Main IPC: H03G3/20
- IPC: H03G3/20 ; H03G9/18 ; H04S7/00

Abstract:
In some embodiments, a method and system for controlling distortion of the output of a miniature speaker by attenuating critical frequency band of the input signal to be reproduced, using tuning parameters that have been predetermined where the critical frequency band is a frequency range of the speaker's frequency response in which Total Harmonic Distortion (THD) peaks. The distortion control is performed in a manner which allows an increase in the average loudness of the speaker's output without significantly increasing distortion. The tuning parameters include a center frequency and a bandwidth of the critical frequency band, and a power threshold value. In some embodiments, the system is a loudness maximizer configured to limit distortion of a speaker's output by limiting distortion in a critical frequency band using predetermined control parameters, and limit the dynamic range of the output signal and increase its perceived overall average loudness level.
Public/Granted literature
- US20130142360A1 METHOD AND SYSTEM FOR CONTROLLING DISTORTION IN A CRITICAL FREQUENCY BAND OF AN AUDIO SIGNAL Public/Granted day:2013-06-06
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