Accession Number:

ADA025903

Title:

Linear Noise-Cancelling Microphone.

Descriptive Note:

Final rept. 20 May 75-20 Apr 76,

Corporate Author:

VOUGHT CORP ADVANCED TECHNOLOGY CENTER INC DALLAS TEX

Personal Author(s):

Report Date:

1976-06-01

Pagination or Media Count:

34.0

Abstract:

The document covers the technical details of work performed to improve the performance of noise-cancelling microphones for military use. A major objective was to develop a wider-bandwidth, wider-dynamic-range microphone. Accomplished improvements over predecessor models include 4 dB greater noise-immunity, 12 dB less vibration sensitivity, better electrical shielding, and demonstration that the microphone will operate in extreme military environments and that the 1st order gradient microphone which consists of a ring BIMORPH piezoceramic element and integral pre-amplifier can be hermetically sealed.

Subject Categories:

  • Electrical and Electronic Equipment
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE