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Maximum Sound Absorption Coefficient of a Fiber Assembly
Journal of the Textile Machinery Society of Japan, 1964 To determine the most suitable porosity of a fiber assembly used as a sound absorbent, we measured the sound absorption coefficients of fiber assemblies having air spaces behind them by the standing wave method and investigated their sound absorption characteristics.
Aso, S, Kinoshita, R
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TechnologiesThin sound-absorbing materials are particularly desired in space-constrained applications, such as in the automotive industry. In this study, we theoretically analyzed the structure of relatively thin glass wool or polyester wool laminated with a ...
Shuichi Sakamoto, Kodai Sato, Gaku Muroi
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A Device for Direct Measurement of Sound Absorption Coefficients [PDF]
The Journal of the Acoustical Society of America, 1931 This paper describes a small scale device for direct comparison of the intensity of sound reflected from a surface of unknown coefficients with that reflected under identical conditions from surfaces whose coefficients have been determined by reverberation methods. It consists of means for producing sound of fixed intensity and frequency at an angle of
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The Sound Absorption Coefficient and Noise Reduction Coefficient of Rice Husk Silica
, 2020 Efficient noise control is neccessary to be applied to reduce the sound pollution and obtain a comfortable life. Rice husk is one of the abandoned agriculture waste material that can obtained in a large quantity which have the potential in the ...
Wei, Tan Ke, Mohamad, Zaleha
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The study of sound absorption coefficient of aluminium nanocomposites
طب کار, 2017 Background Sound is one of the most important work-related risk factors and most widespread physical factors threatening the health of workers. Almost one of the best ways to control the sound, is sound absorber.
Abolfazl Barkhordari +4 more
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Sound Absorption Coefficient Data for Laboratory-Produced Sound-Absorbing Panels from Textile Waste
DataWith the increasing demand for sustainable building materials, it has become essential to identify sustainable alternatives to conventional sound absorbers, particularly in the context of waste reduction and the circular economy.
Kristaps Siltumens +3 more
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, 2011 This paper describes the development of a theoretical framework for quantitatively characterizing sound field diffusion based on scattering coefficient and absorption coefficient of walls.
Toshiki Hanyu
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Sound absorption coefficient changes of acoustical plates made of expanded perlite in moist environment [PDF]
, 2003 Expanded perlite is a porous, lightweight, fire resistant and moisture retaining material with sound and thermal insulation properties. In this research, acoustical behaviour of plates made of expanded perlite was studied experimentally.
Yılmazer, Semiha
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بهداشت و ایمنی کار, 2019 Introduction: Nowadays multiple techniques have been developed to noise control. One the most important way is the control based on sound absorption and insulation.
Roohalah Hajizadeh +4 more
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BuildingsPorous materials have emerged as one of the most widely employed sound-absorbing materials in practical applications, owing to their excellent sound absorption properties and lightweight nature.
Yiguo Yin, Wei Guan
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