Accession Number:

AD0676197

Title:

ACOUSTICS TESTS IN PUERTO RICO.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1968-08-01

Pagination or Media Count:

23.0

Abstract:

The results of a field test to determine the directional characteristics of acoustic waves propagated through a jungle from overflying aircraft are presented. In general, when aircraft are directly over the test site, the sound at a point 20 ft. above the ground arriving from the direction of the ground measures about 6 dB lower than sound arriving from overhead. As the aircraft becomes further from the test site, the difference becomes less. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE