Abstract
This work reports the results of experimental measurements of the sound absorption coefficient of ceramic materials using the principle of acoustic resonators. Subsequently, the values obtained from the measurements were used to train a simulation model of the acoustic behavior of the analyzed material based on artificial neural networks. The possible applications of sound-absorbing materials made with ceramic can derive from aesthetic or architectural needs or from functional needs, as ceramic is a fireproof material resistant to high temperatures. The results returned by the simulation model based on the artificial neural networks algorithm are particularly significant. This result suggests the adoption of this technology to find the finest possible configuration that allows the best sound absorption performance of the material.
Highlights
Over time, the acoustic characteristics of rooms have assumed considerable importance in many areas of people’s personal and working life
This study reports the results of experimental measurements of the sound absorption coefficient performed on samples of ceramic material, made in an artisanal way
The values obtained from the measurements were used to train a simulation model of the acoustic behavior of the analyzed material based on artificial neural networks [45,46,47,48,49]
Summary
The acoustic characteristics of rooms have assumed considerable importance in many areas of people’s personal and working life. Being able to have an undisturbed conversation in a restaurant or a pub, listen to an orchestra concert in a room with adequate sound distribution and diffusion, as well as study and teach in quiet classrooms with excellent intelligibility of the speaker are all examples of how the correct acoustic design of spaces can influence our experience of daily life. Systems suitable for reducing reverberation times in environments exploit the geometric characteristics and porosity of the materials they are made of to increase sound absorption, and reduce overall sound pressure levels [1,2]. Listeners in the stalls can perceive a speaker’s speech adequately if the characteristics of the interior surfaces of the environment have been designed to propagate sound effectively. For the absorbent material to function properly, it must be porous
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