Accession Number:

AD0260282

Title:

NOVEL SOUND SOURCES

Descriptive Note:

Rept. for Jun 56-Sep 60,

Corporate Author:

NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s):

Report Date:

1960-10-17

Pagination or Media Count:

63.0

Abstract:

Two different types of LF high-intensity sound sources have been developed which have both military and commercial potentialities The underwater spark sound source is suitable for explosive echo ranging, particularly from a submarine, and shows promise as a source for long-range, active detection and for long-range underwater signaling. This source has been tested at a depth of 300 feet below the surface and generated peak pressures corresponding to an acoustic level in excess of 3 million watts for a broadband nondirectional condition. In the 1000-4000-cs frequency band, a corresponding acoustic level in excess of 300,000 watts was developed for a nondirectional condition. The pneumatic sound source, is probably the simplest generator of underwater sound yet discovered in its lightest form it weighs less than 1 pound. This source has generated a peak acoustic level of over 4000 watts for a nondirectional condition, in the frequency range between 5 and 300 cs. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE