Sound absorbing material and loudspeaker using same

Abstract

The invention provides a sound absorbing material. The sound absorbing material comprises a covalent organic framework material. The invention also provides a loudspeaker using the sound-absorbing material, the loudspeaker comprises a shell with an accommodating space and a loudspeaker monomer accommodated in the accommodating space, the loudspeaker monomer and the shell define a rear cavity, and the sound-absorbing material is filled in the rear cavity. The covalent organic framework material is applied to the sound-absorbing material, and the advantages of low density, large specific surface area, controllable pore size distribution, stable rigid topological structure, good modifiability and the like of the material are utilized, so that the covalent organic framework material is applied to the sound absorbing material provided by the invention, the acoustic performance of the sound absorbing material provided by the invention can be remarkably improved.

Description

【Technical field】 [0001] The invention relates to the technical field of loudspeakers, in particular to a sound-absorbing material and a loudspeaker using the sound-absorbing material. 【Background technique】 [0002] With the development of technology, electronic products are becoming thinner and thinner, and people have higher and higher requirements for the experience of using electronic products. For electroacoustic devices in electronic products, people hope that it can provide better audio effects. The sound quality is related to all aspects of the electro-acoustic device design and manufacturing process, especially the size of the rear cavity of the electro-acoustic device. Usually, the reduction of the rear chamber of the electro-acoustic device will significantly reduce the response of the low frequency band, resulting in poor sound quality, so it is difficult to provide better sound quality under the condition of a smaller rear chamber. [0003] In order to solve ...

AI Technical Summary

Problems solved by technology

In the prior art, materials such as activated carbon or zeolite molecular sieve are often used as porous materials. However, due to the high density of activated carbon or zeolite molecular sieve used in the prior art, the specific surface area is limited, and the pore size distribution is difficult to adjust through the preparation process. It is difficult for sound-absorbing materials provided by existing technologies to exert good acoustic performance

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