Accession Number:

ADD018819

Title:

Acoustic Communication System.

Descriptive Note:

Patent, Filed 13 Feb 96, patented 26 Aug 97,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1997-08-26

Pagination or Media Count:

12.0

Abstract:

An acoustic communication system comprises a voice processing circuit which generates a first signal representing a voice message a noise sensor channel which generates a second signal in response to detecting background noise in an environment a microcomputer which receives the first and second signals and provides a third signal to a selected one of first and second output ports of the microcomputer where the amplitude of the third signal is functionally related to the value of the second signal an ultrasonic output channel coupled to the first output port and which generates an ultrasonic output signal representing the voice message in response to receiving the third signal a public address channel coupled to the second output port which generates an audible signal representing the voice message in response to receiving the third signal and an ultrasonic receiving system which generates an audible output representing the voice message in response to receiving the ultrasonic output signal.

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics
  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE