Accession Number : ADA307644

Title :   Vulnerability of Female Produced Speech in Operational Environments.

Descriptive Note : Final rept. 5 Dec 94-30 Sep 95,

Corporate Author : ARMSTRONG LAB WRIGHT-PATTERSON AFB OH CREW SYSTEMS DIRECTORATE

Personal Author(s) : Nixon, Charles W. ; Morris, Linda J. ; McCavitt, Angela R. ; McDaniel, Mark P. ; Anderson, Timothy R.

PDF Url : ADA307644

Report Date : APR 1996

Pagination or Media Count : 77

Abstract : The role of women in combat environments has expanded dramatically. The accommodation of females in these previously male dominated environments is vital to fully successful mission accomplishment. Effective voice communications are critical to successful strategic and tactical operations. Current aircraft communications systems and components were optimized for male voice characteristics. Based on laboratory experience and knowledge of the basic characteristics of male and female acoustic speech, many questions exist concerning possible differential effects of operational variables on female speech. This study investigates the impact of the following factors on the perception of female speech: (a) the different spectra of operational noise environments, (b) the response characteristics of noise-cancelling microphones, (c) digital encoding and decoding, and (d) accuracy of automatic speech recognition systems.

Descriptors :   *SPEECH RECOGNITION, *VOICE COMMUNICATIONS, *FEMALES, *AIRCRAFT NOISE, SIGNAL PROCESSING, DIGITAL SYSTEMS, OPTIMIZATION, COCKPITS, VULNERABILITY, SIGNAL TO NOISE RATIO, ACCURACY, HELICOPTERS, JET FIGHTERS, ACOUSTIC SIGNALS, SPEECH ANALYSIS, SPEECH TRANSMISSION, AIRCRAFT EQUIPMENT, NOISE REDUCTION, STRATEGIC WARFARE, TRANSPORT AIRCRAFT, TACTICAL WARFARE, STANDARD DEVIATION, MICROPHONES, SOUND PRESSURE, BACKGROUND NOISE, VOCODERS, SOUND PITCH, WORD RECOGNITION, AUDITORY PERCEPTION, DECODING.

Subject Categories : Voice Communications
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE