A high-efficiency acoustic putty powder for hidden flat-panel speakers

Abstract

The invention provides a high-efficiency acoustic putty powder for hidden flat-panel audio, which contains the following components in volume percentage: 10-70% of hollow glass microspheres, 5-30% of superfine heavy calcium, and 5-30% of heavy calcium carbonate %, hydroxypropyl methylcellulose 1-10%, white lignocellulose 1-10%, sea glue powder 2-20%, redispersible latex powder 1-20%, dry powder polyvinyl alcohol 1-10%. The high-efficiency acoustic putty powder of the concealed flat-panel audio system of the present invention has small density and light weight, has little resistance to sound waves, less absorption, and can reduce the attenuation of sound loudness.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-efficiency acoustic putty powder for hidden flat-panel speakers. Background technique [0002] During the development of hidden flat-panel audio in recent years, the various formulas of putty materials currently on the market as part of its sounding body cannot meet the matching requirements. The existing putty powder for interior wall decoration has a high density. The volume is heavy, which seriously blocks and absorbs a large amount of sound wave energy, reducing the sound loudness by more than 10dB, and because the original formula is mainly based on heavy calcium carbonate, due to its own weight and sound wave absorption, it reduces the sound while reducing the sound. The high frequency emitted by the speaker is also partially absorbed, resulting in the absence of some frequency bands when listening to the sound. In order to make up for the loudness of t...

AI Technical Summary

Problems solved by technology

[0002] During the development of hidden flat-panel audio in recent years, the various formulas of putty materials currently on the market as part of its sounding body cannot meet the matching requirements. The existing putty powder for interior wall decoration has a high density. The volume is heavy, which seriously blocks and absorbs a large amount of sound wave energy, reducing the sound loudness by more than 10dB, and because the original formula is mainly based on heavy calcium carbonate, due to its own weight and sound wave absorption, it reduces the sound while reducing the sound. The high frequency emitted by the speaker is also partially absorbed, resulting in the absence of some frequency bands when listening to the sound

In order to make up for the loudness of the sound, it is necessary to increase a large amount of volume, resulting in inefficiency of the entire audio system, increasing the heat generation and instability of the system

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