Invention Grant
- Patent Title: Active sound reduction system and method
- Patent Title (中): 主动减音系统及方法
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Application No.: US13387763Application Date: 2010-07-30
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Publication No.: US09384727B2Publication Date: 2016-07-05
- Inventor: Paul Sebastian Booij , Adriaan Johan Van Leest , Ronaldus Maria Aarts
- Applicant: Paul Sebastian Booij , Adriaan Johan Van Leest , Ronaldus Maria Aarts
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee Address: NL Eindhoven
- Agent Larry Liberchuk
- Priority: EP09167433 20090807
- International Application: PCT/IB2010/053472 WO 20100730
- International Announcement: WO2011/015979 WO 20110210
- Main IPC: G10K11/16
- IPC: G10K11/16 ; G10K11/178

Abstract:
The present invention refers to an active sound reduction system and method for attenuation of sound emitted by a primary sound source, especially for attenuation of snoring sounds emitted by a human being. This system comprises a primary sound source, at least one speaker as a secondary sound source for producing an attenuating sound to be superposed with the sound emitted by said primary sound source, a reference microphone for receiving sound from said primary sound source, and at least one error microphone being allocated to each speaker to form a speaker/microphone pair. The at least one error microphone is provided as a directional microphone pointing at its allocated speaker to receive residual sound resulting from the superposition of the sounds from the primary sound source and the corresponding speaker. The error microphone and speaker of at least one speaker/microphone pair and the primary sound source are arranged substantially collinear. A control unit is provided to receive an output reference signal of the reference microphone representing the sound received by the reference microphone and an output error signal of the at least one error microphone representing the sound received by the at least one error microphone and to calculate a control signal for the speaker from the output reference signal and the output error signal.
Public/Granted literature
- US20120163626A1 ACTIVE SOUND REDUCTION SYSTEM AND METHOD Public/Granted day:2012-06-28
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