发明申请
US20120070012A1 NOISE REDUCTION SYSTEM FOR AN ELECTRICALLY POERED AUTOMOTIVE VEHICLE 审中-公开
用于电动汽车的噪声减少系统

NOISE REDUCTION SYSTEM FOR AN ELECTRICALLY POERED AUTOMOTIVE VEHICLE
摘要:
A noise reduction system for an automotive vehicle powered at least in part by an electric motor located separately from the passenger compartment. The system includes at least one sensor which produces an output signal having a frequency, amplitude and phase representative of noise generated by the electric motor. At least one speaker is positioned closely adjacent the electric motor. A speaker output controller receives the output from the sensor as an input signal and generates an output signal to the speaker so that the speaker produces an audible signal having substantially the same frequency and amplitude but inverted in phase relative to the output from the sensor.
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