发明名称 Active noise attenuation system
摘要 An active noise attenuation system for an air induction assembly includes a housing that is mounted to a vehicle structure and a speaker assembly that is mounted within the housing to generate a sound field for attenuating noise. The housing defines an air inlet duct open end through which air is drawn. A microphone detects noise and modifies an anti-noise signal that is sent from an electronics center. The electronics center receives the signal, mixes with other engine signals, phase-shifts the signal, and sends the phase-shifted signal to the speaker to attenuate the noise. The speaker includes electrical connections that extend outwardly toward the air inlet duct open end for connection to the electronics center. The microphone and speaker are connected to the electronics center with flex cables.
申请公布号 US2002039423(A1) 申请公布日期 2002.04.04
申请号 US20010795595 申请日期 2001.02.28
申请人 SIEMENS CANADA LIMITED 发明人 DALY PAUL D.
分类号 F02M35/04;F02M35/12;F02M35/14;(IPC1-7):H03B29/00 主分类号 F02M35/04
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