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Environment noise collection method and apparatus by noise reduction earphone

A technology for environmental noise and noise-cancelling earphones, which is applied to transducer circuits, sensors, electrical components, etc., can solve the problems of reducing noise reduction efficiency, being unable to directly obtain the noise level of environmental noise, and lacking methods for collecting environmental noise. Effect of improving noise reduction efficiency

Active Publication Date: 2015-09-02
SHENZHEN GRANDSUN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for collecting environmental noise by noise-cancelling earphones, which aims to solve the problem that the existing noise-cancelling earphones lack a method for collecting environmental noise, and cannot directly obtain the noise level of the environmental noise, which is not conducive to turning on the noise reduction in time function, reducing the problem of noise reduction efficiency

Method used

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  • Environment noise collection method and apparatus by noise reduction earphone
  • Environment noise collection method and apparatus by noise reduction earphone
  • Environment noise collection method and apparatus by noise reduction earphone

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Experimental program
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Embodiment 1

[0023] figure 1 It is an implementation flow chart of the method for collecting environmental noise by the noise reduction earphone provided by the embodiment of the present invention, and is described in detail as follows:

[0024] In step S101, using a noise reduction earphone microphone to collect ambient noise and generate an analog audio signal;

Embodiment approach

[0025] Among them, there are two implementation methods for collecting environmental noise and generating an analog audio signal by using a noise-canceling earphone microphone, which are described in detail as follows:

[0026] The first implementation mode:

[0027] At every preset detection interval, the noise-canceling headphone microphone is used to collect environmental noise and generate an analog audio signal.

[0028] It should be noted that since the environmental noise signal usually does not change much within a period of time, the detection of the environmental noise signal every preset detection interval can further save the cost of the noise reduction earphones. power consumption.

[0029] The second implementation mode:

[0030] When the distance away from the geographic location where the last environmental noise was collected and the analog audio signal was generated is not less than the preset distance, the noise reduction earphone microphone is used to col...

Embodiment 2

[0050] figure 2 It is an implementation flowchart of the method S102 for collecting environmental noise by the noise reduction earphone provided by the embodiment of the present invention, and is described in detail as follows:

[0051] In step S201, an unprocessed peak is selected on the signal curve of the analog noise signal;

[0052] In step S202, when the unprocessed peak appears outside the preset time threshold of the processed peak, and the amplitude value of the unprocessed peak is greater than the preset amplitude value, according to the pre-configured sampling frequency, the The analog noise signal is sampled to generate multiple noise samples.

[0053] For example, after collecting 40 sampling values, the minimum value is removed, and only the largest 20 sampling values ​​are taken to obtain the required noise sampling value.

[0054] In the embodiment of the present invention, removing the minimum value can reduce errors and select noise sampling values ​​that ...

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Abstract

The invention is suitable for the field of noise reduction earphones, and provides an environment noise collection method and apparatus by a noise reduction earphone. The method includes the steps: collecting environment noise by a noise reduction earphone microphone, and generating a corresponding simulated noise signal; sampling the simulated noise signal according to a pre-configured sampling frequency and generating noise sampling values; quantifying the multiple generated noise sampling values on the basis of a pre-configured quantification level, and generating an optimal noise sampling value; generating a noise value according to the optimal noise sampling value through a preset conversion formula; and matching the generated noise value with a pre-stored noise value in a pre-stored corresponding relation to obtain the noise level of the generated noise value. The beneficial effects of the invention reside in that firstly, the noise level of environment noise can be obtained without arrangement of hardware for detecting the noise level on a noise reduction earphone; and secondly, the noise reduction function can be triggered in time to achieve noise reduction, so the noise reduction efficiency is improved.

Description

technical field [0001] The invention belongs to the field of noise reduction earphones, in particular to a method and device for collecting environmental noise by noise reduction earphones. Background technique [0002] Noise pollution is one of the four major pollutions recognized internationally. With the development of urbanization and technological progress, noise pollution has become more and more serious. Noise-cancelling headphones can be used to reduce noise, whether it is active noise reduction or passive noise reduction, can reduce or eliminate environmental noise, provide a quiet and comfortable environment for noise-canceling headset users, and reduce damage to the human ear. [0003] However, the existing noise-cancelling earphones lack a method for collecting environmental noise, and cannot directly obtain the noise level of the environmental noise, which is not conducive to turning on the noise-cancelling function in time, and reduces the noise-cancelling effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 曹磊彭信龙彭久高吴海全师瑞文
Owner SHENZHEN GRANDSUN ELECTRONICS CO LTD
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