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Noise measuring method and noise meter

A technology of noise measurement and noise meter, which is applied in the field of data processing, can solve the problem that the sound cannot meet the needs of noise value recognition, and achieve the effect of recognition accuracy

Active Publication Date: 2018-07-27
上海小慧智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output of sound recognition cannot meet the needs of specific noise value recognition.

Method used

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  • Noise measuring method and noise meter
  • Noise measuring method and noise meter
  • Noise measuring method and noise meter

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0031] It should be noted that like numerals and let...

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Abstract

The embodiment of the invention provides a noise measuring method and a noise meter. The noise measuring method comprises: receiving a sound signal; adjusting the sound signal by pulse width modulation to obtain a rectangular wave pulse signal; fetching a circle of the rectangular wave pulse signal, and performing interpolation processing to obtain a signal sequence with a specified fixed interval; processing the signal sequence with the specified fixed interval according to a preset rule, and sampling the proceed signal sequence to obtain a sampled signal sequence; processing the sampled signal sequence to obtain a frequency domain signal, so as to extract a spectral feature of the sampled signal sequence; and performing a weighted calculation on the spectral feature to obtain a noise value corresponding to the sound signal.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a noise measurement method and a noise meter. Background technique [0002] Noise meters are currently widely used in the field of environmental protection, and undertake monitoring and alarm tasks in various occasions such as industrial and mining enterprises, roads and bridges, construction sites, and residential schools. But the recognition output of the sound cannot meet the requirement of specific noise value recognition. Contents of the invention [0003] In view of this, the purpose of the embodiments of the present invention is to provide a noise measurement method and a noise meter. [0004] A noise measurement method provided by an embodiment of the present invention includes: [0005] receive sound signals; [0006] adjusting the sound signal using pulse width modulation to obtain a rectangular wave pulse signal; [0007] performing interpolation processing on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/06
CPCG01H11/06
Inventor 马雨出张建林刘泽红苏劲
Owner 上海小慧智能科技有限公司