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10 items by relevance
1 Conference paper

Sabine absorption coefficients to random incidence absorption coefficients

Jeong, Cheol-Ho

Proceedings of Forum Acusticum 2014 — 2014

into random incidence absorption coefficients for porous absorbers are investigated. Two optimization-based conversion methods are suggested: the surface impedance estimation for locally reacting absorbers and the flow resistivity estimation for extendedly reacting absorbers. The suggested conversion methods

Year: 2014

Language: English

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2 Journal article

Converting Sabine absorption coefficients to random incidence absorption coefficients

Jeong, Cheol-Ho

Acoustical Society of America. Journal — 2013, Volume 133, Issue 6, pp. 3951-3962

coefficients to random incidence absorption coefficients are proposed. The overestimations of the Sabine absorption coefficient are investigated theoretically based on Miki's model for porous absorbers backed by a rigid wall or an air cavity, resulting in conversion factors. Additionally, three optimizations

Year: 2013

Language: English

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3 Journal article

Reproducibility of The Random Incidence Absorption Coefficient Converted From the Sabine Absorption Coefficient

Jeong, Cheol-Ho; Chang, Ji-ho

Acta Acustica United With Acustica — 2015, Volume 101, Issue 1, pp. 99-112

largely depending on the test room. Several conversion methods for porous absorbers from the Sabine absorption coefficient to the random incidence absorption coefficient were suggested by considering the finite size of a test specimen and non-uniformly incident energy onto the specimen, which turned out

Year: 2015

Language: English

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