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TRANSITIONING BETWEEN ARRAYED AND IN-PHASE SPEAKER CONFIGURATIONS FOR ACTIVE NOISE REDUCTION
专利权人:
BOSE CORPORATION
发明人:
TORRES, Wade
申请号:
WO2016US38894
公开号:
WO2016210050(A1)
申请日:
2016.06.23
申请国别(地区):
世界知识产权组织国际局
年份:
2016
代理人:
摘要:
A noise cancellation method and system comprises a system controller that produces a command signal in response to a signal from at least one microphone detecting sound in an area. The system controller includes an arrayed speaker controller for producing a driver signal for each speaker in response to the command signal such that combined sound emitted by the speakers in response to the driver signals produces a substantially uniform sound pressure field adapted to attenuate a noise field corresponding to the sound detected by the at least one microphone. The system controller includes an in-phase speaker controller for producing a common in-phase driver signal for all speakers in response to the command signal and a signal director module for proportioning the command signal between the arrayed and in-phase speaker controllers in response to a magnitude of voltage associated with driving the speakers in accordance with the command signal.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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