Invention Grant
- Patent Title: Active noise reduction headphone
- Patent Title (中): 主动降噪耳机
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Application No.: US14095507Application Date: 2013-12-03
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Publication No.: US09445184B2Publication Date: 2016-09-13
- Inventor: Martin Ring
- Applicant: Bose Corporation
- Applicant Address: US MA Framingram
- Assignee: Bose Corporation
- Current Assignee: Bose Corporation
- Current Assignee Address: US MA Framingram
- Agency: Schmeiser, Olsen & Watts LLP
- Agent William G. Guerin
- Main IPC: H04R1/10
- IPC: H04R1/10 ; G10K11/178

Abstract:
An active noise reduction earphone includes a speaker, a plurality of microphones and a feedback system. Each microphone is displaced from the speaker and the other microphones, and each microphone generates a microphone signal responsive to received acoustic noise. The feedback system receives a combination of the microphone signals and generates an inverse noise signal that is applied to the speaker. The speaker generates an inverse acoustic noise signal that substantially cancels the acoustic noise signal at a predetermined location relative to the speaker and the microphones. The feedback system can include a microphone signal combiner in communication with the microphones. The microphone signal combiner generates a signal that may be a sum or weighted sum of the microphone signals and can be used to generate the inverse noise signal. The earphone has an increased noise reduction bandwidth and improved cancellation capability relative to conventional earphones.
Public/Granted literature
- US20150154950A1 ACTIVE NOISE REDUCTION HEADPHONE Public/Granted day:2015-06-04
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