Accession Number:

AD0261359

Title:

SOME MEASUREMENTS OF THE ABSORPTION COEFFICIENT OF SOIL USING THE IMPEDANCE TUBE TECHNIQUE

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY

Personal Author(s):

Report Date:

1961-08-01

Pagination or Media Count:

1.0

Abstract:

In any field testing involving horizontal propagation of sound, it is desirable to know how much is absorbed by the ground. Since the sound-absorption properties of the ground areAFFECTED BY MANY FACTORS, IT IS USUALLY NECESSARY TO MAKE AN ESTIMATE OF THIS EFFECT. This paper describes an experiment to measure absorption coefficient of the soil by means of an impedance tube. Controlled laboratory tests are describe which measured the effect of moisture content and particle size on the absorption coefficient. Effects of grass on absorption coefficient are also noted. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE