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De-noising system and de-noising method thereof

A technology of noise cancellation and mechanical vibration, which is applied in the field of noise cancellation system to achieve the effect of improving call quality, reducing cost and reducing space occupation

Inactive Publication Date: 2016-07-13
AAC ACOUSTIC TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, in order to meet the effect of noise cancellation, the traditional design adopts the method of keeping the microphone away from the noise source, which cannot fundamentally solve the problem of eliminating mechanical noise

Method used

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  • De-noising system and de-noising method thereof
  • De-noising system and de-noising method thereof

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Please also see figure 1 , figure 2 ,in figure 1 It is a structural schematic diagram of the noise elimination system of the present invention, figure 2 It is a schematic diagram of the working principle of the noise canceling system of the present invention. Described noise canceling system 1 comprises microphone 11, acceleration sensor 12, first signal channel 13, second signal channel 14, inverter 15, processor 16, chip 17, temperature sensor 18 and shielding cover 19, described shielding The cover 19 can be made of metal material, and the shielding cover 19 is provided with a sound hole 191 .

[0033] The microphone 11 is used to collect sound signals and mechanical vibration signals, and the mechanical vibration signals collected by the microphone will form mechanical noise.

[0034] The acceleration sensor 12 is used to collect mecha...

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Abstract

The present invention provides a de-noising system. The de-noising system comprises a microphone, an acceleration sensor, a first signal channel, a second signal channel, an inverter and a processor; wherein two ends of the first signal channel are electrically connected with the acceleration sensor and the inverter, the second signal channel is electrically connected with the acceleration sensor and is used for outputting a mechanical vibration signal acquired by the acceleration sensor, the microphone and the inverter are electrically connected with the processor. The de-noising system provided by the invention can obtain a pure tone signal in which mechanical noise is eliminated, thus communication quality of a communication product can be improved. The invention also provides a de-noising method of the de-noising system.

Description

【Technical field】 [0001] The invention relates to the technical field of acoustics, in particular to a noise canceling system and a noise canceling method thereof. 【Background technique】 [0002] With the development of wireless communication, there are more and more mobile phone users around the world. The requirements of users for mobile phones are not only satisfied with calls, but also to be able to provide high-quality call effects. Especially the current development of mobile multimedia technology, the mobile phone Call quality is even more important. Therefore, the application of noise reduction technology in related communication products such as mobile phones is more and more extensive. [0003] In the related art, when the microphone works, it not only collects the acoustic signal transmitted through the air, but also collects the mechanical vibration signal transmitted through the structure, wherein the mechanical vibration signal forms mechanical noise. Mechani...

Claims

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Application Information

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IPC IPC(8): H04R3/00
CPCH04R3/00H04R2400/01
Inventor 张金宇
Owner AAC ACOUSTIC TECH (SHENZHEN) CO LTD
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