The working principle of porous sound-absorbing materials is based on the conversion and absorption process of sound energy. When the sound wave passes through the small pores, voids or pores of the material, the friction with the surface of the pore wall generates heat energy, which converts the sound wave energy into heat energy to weaken the vibration amplitude of the sound wave. After the sound wave enters the porous sound-absorbing material, part of it will be reflected back, while the other part will enter the pores of the material, causing internal collisions and reflections, gradually weakening the energy of the sound wave, thereby reducing the reflection and transmission of sound. Porous sound-absorbing materials are widely used in construction, transportation, industrial equipment, audio rooms and other fields, effectively improving the acoustic environment and improving comfort.

A variety of porous sound-absorbing materials play an important role in different fields. Acoustic foam is widely used in construction and automobile manufacturing for its light weight and sound-absorbing effect, effectively isolating external noise. Glass fiber plays an important role in the field of industrial equipment because of its high temperature resistance and corrosion resistance, effectively controlling machine noise. In addition, melamine foam is widely used in audio rooms and entertainment places, which has good sound absorption effect and ensures audio quality. When actually selecting materials, various factors need to be considered comprehensively according to acoustic requirements and environmental requirements.

Selecting a suitable porous sound-absorbing material requires comprehensive consideration of multiple factors. Pore structure and shape, pore density, material density, thickness, etc. all affect sound absorption performance. Different materials also have different absorption effects on specific frequencies of sound waves, and changes in environmental temperature and humidity will also affect material performance. The correct installation method and maintenance requirements are also related to the realization of the sound absorption effect. When selecting materials, the appropriate porous sound-absorbing material should be selected according to the specific application scenario and acoustic requirements, so as to prepare for the best acoustic comfort.

Porous sound-absorbing materials have become an important tool to solve noise problems due to their unique working principles and wide application fields. By converting sound energy into heat energy, porous sound-absorbing materials can effectively reduce noise levels, create a more peaceful and comfortable environment, and improve the quality of life and work. In the future, with the development of science and technology, we have reason to expect that more innovative porous sound-absorbing materials will be applied in various fields, bringing new possibilities to the field of acoustic control.

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