Invention Grant
- Patent Title: Silent zone generation
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Application No.: US16073755Application Date: 2017-07-28
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Publication No.: US10403258B2Publication Date: 2019-09-03
- Inventor: Nikos Zafeiropoulos
- 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: Brooks Kushman P.C.
- International Application: PCT/EP2017/069189 WO 20170728
- Main IPC: G10K11/178
- IPC: G10K11/178 ; H04R1/10

Abstract:
A system for generating a silent zone at a listening position is provided. The system includes a loudspeaker, an error microphone, a microphone array, and a noise controller. The loudspeaker is configured to radiate sound that corresponds to a sound signal. The error microphone is configured to pick up noise radiated by a noise source and the sound radiated by the loudspeaker via a secondary path. The microphone array is configured to pick up noise radiated by a noise source and the sound from the loudspeaker. The microphone array is configured to generate corresponding array signals. The noise controller is configured to receive a noise signal representative of noise radiated by the noise source and to filter the noise signal with a controllable noise reduction transfer function. The noise controller is further configured to control the noise reduction transfer function based on the noise signal and a virtual error signal.
Public/Granted literature
- US20190035380A1 SILENT ZONE GENERATION Public/Granted day:2019-01-31
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