A New Method to Measure the Absorption Coefficient Based on the Sound Pressure Delaying

Da Yu Huang

doi:10.4028/www.scientific.net/AMR.834-836.1156

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 834-836A New Method to Measure the Absorption Coefficient...

A New Method to Measure the Absorption Coefficient Based on the Sound Pressure Delaying

Abstract:

Absorption coefficient is an important parameter of the absorption function of the absorption material. Traditional measurement methods of absorption coefficient are standing wave tube and reverberation which have some shortcomings. In this paper, phase of the sound pressure measured by two equal distance microphones placed in the front of the absorption material is delayed in order to attain the absorption coefficient. At the last, an experiment for one absorption material is carried out, the experiment results compare with the results of the other methods above mentioned that denotes that the theory is correct and practicable. Key words: absorption material standing wave reverberation time delaying

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Periodical:

Advanced Materials Research (Volumes 834-836)

Pages:

1156-1160

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.834-836.1156

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Online since:

October 2013

Authors:

Da Yu Huang

Keywords:

Absorption Material, Reverberation, Standing Wave, Time Delaying

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