Acoustical insulation sound-deadening pipe used for on-site noise measurement and recognition

Abstract

The invention belongs to the technical field of acoustics, in particular to a sound-insulating and muffling tube for on-site noise measurement and identification. It is composed of elastic connecting section, sound-absorbing sponge, wall plate, sound-absorbing sponge, bottom microphone hole, sealing sheet, cavity, and bottom plate. The elastic connecting section, wall plate, and bottom plate are connected to form a cavity. The inner wall of the cavity is close to the sound-absorbing sponge , the bottom microphone hole is in the middle of the bottom plate of the multi-layer aluminum plate damping light-weight sound insulation structure, and the elastic sealing sheet of the microphone hole is on the outside of the bottom microphone hole. When in use, it only needs to stick the present invention on the surface of the noise source to be measured, and the microphone extends into the middle of the cavity from the bottom microphone hole. The invention has the advantages of simple device, convenient processing, lightness and portability, excellent sound insulation performance, and can effectively measure and identify noises on the scene of multiple noise sources.

Description

technical field [0001] The invention belongs to the technical field of acoustics, and in particular relates to a sound insulation and muffler pipe used for on-site noise measurement and identification. Background technique [0002] There are many noise sources in large-scale factories and mines, which are widely distributed, have high sound levels, and have a great influence on each other. In many cases, it is difficult to identify the contribution of each noise source through direct measurement by a single microphone, and cannot provide a reliable basis for governance measures. The sound intensity method is used in Under certain conditions, the influence of background noise can be suppressed, but the equipment is expensive, and it is difficult to carry out effective measurement in the scene with strong reverberation field. Contents of the invention [0003] The purpose of the present invention is to propose a portable, high-sound-insulating performance, and a simple-insta...

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Problems solved by technology

[0002] There are many noise sources in large-scale factories and mines, which are widely distributed, have high sound levels, and have a great influence on each other. In many cases, it is difficult to identify the contribution of each noise source through direct measurement by a single microphone, and cannot provide a reliable basis for governance measures. The sound intensity method is used in Under certain conditions, the influence of background noise can be suppressed, but the equipment is expensive, and it is difficult to carry out effective measurement in the scene with strong reverberation field

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