The invention discloses an automobile active noise reduction system. The system comprises an automobile body and a noise reduction headrest, the noise reduction headrest is detachably installed on a seat of the automobile body, the noise reduction headrest comprises a pickup microphone, a processing chip and a loudspeaker, the pickup microphone collects noise and transmits the noise to the processing chip, the processing chip is used for calculating the reverse phase sound wave of the noise, and the loudspeaker plays the reverse phase sound wave to offset the noise. The noise reduction headrest is detachably installed in a seat and is flexible to use, and noise reduction can be achieved under the condition that original equipment of an automobile is not affected. Compared with a scheme that a noise reduction system is integrated into a seat or a whole vehicle space, the system is more economical and convenient, and the cost is greatly reduced.
本发明揭示了一种汽车主动降噪系统,包括汽车本体以及降噪头枕,所述降噪头枕可拆卸地安装于所述汽车本体的座椅上,所述降噪头枕包括拾音麦克风、处理芯片以及扬声器,所述拾音麦克风采集噪声并将所述噪声传输至处理芯片,所述处理芯片用于运算出所述噪声的逆相位声波,并通过所述扬声器播放出以抵消所述噪声,通过将降噪头枕可拆卸地安装在座椅中,灵活使用,可以在不影响汽车原有设备的情况下实现降噪,相比将降噪系统集成到座椅里面或者整车空间的方案更加经济便捷,大大地降低了成本。
Automobile active noise reduction system
汽车主动降噪系统
2022-01-14
Patent
Elektronische Ressource
Chinesisch
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