发明申请
US20100111317A1 NOISE REDUCTION DEVICE 有权
噪声减少装置

NOISE REDUCTION DEVICE
摘要:
A noise reduction device, including a microphone for detecting noise, a noise controller for reversing the phase of noise detected by the microphone based on information outputted from the microphone, and a speaker for outputting sound based on information outputted from the noise controller, is arranged at a seat surrounded by a shell portion having a cavity, wherein a speaker is disposed in the cavity of the shell portion.
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