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Separation method of structure borne noise and structure transmission noise

A separation method, a technology of noise sound power level, applied in the measurement of ultrasonic/sonic/infrasonic waves, sound-generating equipment, measurement devices, etc., and can solve problems such as noise classification

Inactive Publication Date: 2012-03-28
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Noise reduction is also carried out on most of the equipment, but the existing noise engineers generally take corresponding measures to control noise based on engineering experience, and do not classify the noise in order to use targeted noise reduction strategies. Improve the effect of noise control

Method used

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  • Separation method of structure borne noise and structure transmission noise
  • Separation method of structure borne noise and structure transmission noise
  • Separation method of structure borne noise and structure transmission noise

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Embodiment 1

[0029] In the present invention, the noise that transmits sound energy directly to the outside through air as a medium during the transmission process is defined as structure-transmitted noise; the noise that is transmitted to the outside by a solid medium connected to the noise source is defined as structure-transmitted noise.

[0030] like figure 1 As shown, when a noise source in a closed structure transmits noise to the outside, the noise can be divided into two types: structure transmission noise and structure transfer noise. Only by correctly distinguishing the respective proportions of these two types of noise can the most suitable noise reduction method be selected, which will achieve twice the result with half the effort.

[0031] A method for separating structure-transferred noise and structure-transmitted noise, comprising the following steps:

[0032] Step 1. Set up acoustic measuring instruments near the noise source equipment, prepare two different sound insulat...

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Abstract

The invention relates to the field of noise control, in particular to a method for selecting noise reduction means. A separation method of structure borne noise and structure transmission noise comprises the following steps: step 1, arranging an acoustic measuring instrument near noise source equipment, and preparing two pieces of different sound insulation materials; step 2, directly measuring the sound power level of the original noise sent from a noise source; step 3, selecting the two pieces of the sound insulation materials for carrying out sound insulation for three times to measure the sound power level of the noise; step 4, computing to obtain the sound energy of the original structure transmission noise; and step 5, computing the specific gravity of the sound energy of the original structure borne noise and the sound energy of the original structure transmission noise in the sound energy of the original noise, and selecting corresponding noise reduction means. In the invention, the separation method of the structure borne noise and the structure transmission noise can be used for separating the structure transmission noise and the structure borne noise of the sound source without affecting the structure borne noise to accurately distinguish the composition of the noise, thereby accurately selecting the adopted noise reduction means and improving the noise reduction effect.

Description

technical field [0001] The invention relates to the field of noise control, in particular to a method for selecting noise reduction means. Background technique [0002] When the equipment is running, it will inevitably produce a certain level of noise. Noise pollution will interfere with the normal work and life of others, and will cause psychological effects such as annoyance, excitement, difficulty, and even loss of reason. Now people have realized the harm of noise, so all countries have formulated relevant standards for noise. Noise reduction is also carried out on most of the equipment, but the existing noise engineers generally take corresponding measures to control noise based on engineering experience, and do not classify the noise in order to use targeted noise reduction strategies. Improve the effect of noise control. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for separating structure-tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/16G10K11/162G01H17/00
Inventor 顾庆蔡相儒袁卫平叶怀汉
Owner SAIC MOTOR