Calculation of attenuation value of sound wave in air duct：By sound absorbing chamber

Calculation of attenuation value of sound wave in air duct：By sound absorbing chamber

1Area of Exit：S(m^2)0＜S
2Surface area inside chamber：A(m^2)0＜A
3Average sound absorption coefficient：αInside chamber. 0＜α＜1
4Length：x(m)0＜x
5Length：y(m)0＜y
6GraphPlot Input Data：
7Number of gridlines of Graph x-axis, y-axis Figure：
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Keyword･Reference･Remarks･History

LaTex

Keyword

attenuation value,sound wave,air duct,sound absorbing chamber

Reference

[1]：前川純一：『建築・環境音響学』,共立出版,1990,pp.121-127.

Remarks

・If the sound absorption coefficient of the material is constant, average sound absorption coefficient also varies with changes in the exit area.
・Attenuation value of sound wave in air duct：R(dB)
・Making Equation Image is powered by CODECOGS

History

・2011/01/27：Upload

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