The invention discloses an active noise reducing device for an automobile. The active noise reducing device for the automobile is characterized in that according to the device, audio signals collected by a microphone signal collecting circuit are accessed into a microphone signal shaping circuit to be shaped and are then sent into a noise reducing processing circuit; after the processing by the noise reducing processing circuit, noise reducing signals are output; the noise reducing signals are sent into an audio power amplifier through a noise reducing preposition circuit; a loudspeaker is promoted to produce sound, and superposition cancellation with the noise in the automobile is realized. Through adopting the structure, the active noise reducing device for the automobile has the advantages that the noise such as engine noise, wind noise, tire noise and road noise in the automobile can be effectively reduced; and the existing vehicle mounted sound system is used, and excessive production cost does not need to be increased.
Active noise reducing device for automobile
2015-09-09
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
ACTIVE NOISE REDUCING DEVICE, MOBILE DEVICE, AND ACTIVE NOISE REDUCING METHOD
European Patent Office | 2018
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