Invention Grant
- Patent Title: System for active noise control based on audio system output
- Patent Title (中): 基于音频系统输出的主动噪声控制系统
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Application No.: US12421459Application Date: 2009-04-09
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Publication No.: US08189799B2Publication Date: 2012-05-29
- Inventor: Vasant Shridhar , Duane Wertz
- Applicant: Vasant Shridhar , Duane Wertz
- Applicant Address: US CA Northridge
- Assignee: Harman International Industries, Incorporated
- Current Assignee: Harman International Industries, Incorporated
- Current Assignee Address: US CA Northridge
- Agency: Brinks Hofer Gilson & Lione
- Main IPC: G10K11/16
- IPC: G10K11/16

Abstract:
An active noise control (ANC) system is configured to generate at least one anti-noise signal configured to drive a speaker to generate sound waves to destructively interfere with an undesired sound present in a target space. The at least one anti-noise signal is adjusted based an output signal of an audio system. The at least one anti-noise signal may be adjusted based on at least one of a volume level of the audio system, a power level of at least one predetermined frequency or frequency range of the output signal of the audio system, frequency content of an output signal of the audio system. The ANC system receives an error signal to adjust generation of the at least one anti-noise signal. The error signal is adjusted to compensate for adjustment of the at least one anti-noise signal based on the output signal of the audio system.
Public/Granted literature
- US20100260345A1 SYSTEM FOR ACTIVE NOISE CONTROL BASED ON AUDIO SYSTEM OUTPUT Public/Granted day:2010-10-14
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