Accession Number:

AD0706845

Title:

SOUND PROPAGATION AND ATTENUATION CHARACTERISTICS OVER A HEAVILY VEGETATED TERRAIN

Descriptive Note:

Technical brief

Corporate Author:

WYLE LABS HUNTSVILLE AL RESEARCH STAFF

Personal Author(s):

• Pao, S. Paul

Report Date:

1970-06-01

Pagination or Media Count:

19.0

Abstract:

The object of the study was to establish methods for predicting sound propagation losses over areas covered with thick vegetation or forest. In dealing with problems in this regime, the concept of layered media boundary condition is of prime importance. The study is being conducted through both analytical and experimental approaches.

Descriptors:

• *ACOUSTIC SIGNALS
• *SOUND TRANSMISSION
• ACOUSTIC IMPEDANCE
• JUNGLES
• MATHEMATICAL MODELS
• POROSITY
• PROPAGATION
• RANGE(DISTANCE)
• REFLECTION
• SOILS

Subject Categories:

• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE