Invention Grant
- Patent Title: Active noise reduction
- Patent Title (中): 主动降噪
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Application No.: US13656274Application Date: 2012-10-19
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Publication No.: US09099076B2Publication Date: 2015-08-04
- Inventor: Markus Christoph , Johann Freundorfer , Thomas Hommel
- Applicant: Harman Becker Automotive Systems GmbH
- Applicant Address: DE Karlsbad
- Assignee: Harman Becker Automotive Systems GmbH
- Current Assignee: Harman Becker Automotive Systems GmbH
- Current Assignee Address: DE Karlsbad
- Agency: O'Shea Getz P.C.
- Priority: EP11186155 20111021
- Main IPC: G10K11/178
- IPC: G10K11/178

Abstract:
A noise reducing sound reproduction system comprises a loudspeaker that is connected to a loudspeaker input path and that radiates noise reducing sound. A microphone is connected to a microphone output path and picks up the noise or a residual thereof. An active noise reduction filter is connected between the microphone output path and the loudspeaker input path, and the active noise reduction filter comprises at least one shelving filter.
Public/Granted literature
- US20130101129A1 ACTIVE NOISE REDUCTION Public/Granted day:2013-04-25
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