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Noise reduction device and vehicle

A noise reduction and vehicle technology, applied in the field of noise reduction, can solve the problems of large volume and large space occupied by noise reduction devices, and achieve better effects and better noise reduction effects

Pending Publication Date: 2021-03-05
ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional noise reduction device takes up a lot of space due to the large size of the microphone and speaker.

Method used

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  • Noise reduction device and vehicle
  • Noise reduction device and vehicle
  • Noise reduction device and vehicle

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.

[0035] In order to more clearly understand the above objects, features and advantages of the present application, the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0036] A lot of specific details are set forth in the following description to facilitate a full understanding of the application, and the described implementations are only a part of the implementations of the application, but not all of the implementations. Based on the implementation manners in this application, all other implementation manners obtained ...

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Abstract

The invention discloses a noise reduction device and a vehicle. The noise reduction device comprises a piezoelectric film and a circuit module. The circuit module is electrically connected to the piezoelectric film. The circuit module is used for receiving a first electric signal converted from a first sound wave signal, converting the first electric signal into a second electric signal and transmitting the second electric signal to the piezoelectric film, and the first sound wave signal is an external sound wave signal of the noise reduction device. The piezoelectric film is used for forminga second sound wave signal according to the second electric signal and transmitting the second sound wave signal out of the noise reduction device, and the phase of the second sound wave signal is opposite to that of the first sound wave signal. The noise reduction device is small in size and small in occupied space. When the noise reduction device is applied to the vehicle, the space utilizationrate of the vehicle is high.

Description

technical field [0001] The present application relates to the technical field of noise reduction, in particular to a noise reduction device and a vehicle. Background technique [0002] Living noise includes car noise, wind noise, and equipment noise. Noise has seriously affected people's lives. In addition, as the impact of noise is becoming more and more serious, noise reduction devices are gradually attracting people's attention. A traditional noise reduction device includes a microphone, a circuit module and a speaker. Microphones are used to receive sound waves and convert them into electrical signals. The circuit module is used to process the electrical signal to obtain a new electrical signal. According to the new electrical signal, the loudspeaker outputs a sound wave that is completely opposite to the received sound wave, so as to achieve the purpose of noise reduction. However, the traditional noise reduction device takes up a lot of space due to the relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178B60J1/20
CPCG10K11/178B60J1/20G10K2210/1282
Inventor 黄梅峰冉鹏胡营勇
Owner ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD
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