Accession Number:

AD0669469

Title:

THE DEVELOPMENT OF A DIGITAL HELIUM SPEECH PROCESSOR.

Descriptive Note:

Final rept. May 67-May 68,

Corporate Author:

HRB-SINGER INC STATE COLLEGE PA

Personal Author(s):

Report Date:

1968-05-01

Pagination or Media Count:

59.0

Abstract:

The report describes a development program for a small laboratory processor of speech generated in a hyperbaric helium environment. Prior research shows that distortion associated with this helium speech arises from upward shifted format frequencies and a decreasing consonant-vowel ratio. These two factors form the basis for the design of the processor which operates in real time using digital techniques. Test and evaluation of the portable processor and associated microphones followed the developmental phase. Improved intelligibility of helium speech was observed with the use of the processor under various combinations of speaker, microphone, and hyperbaric helium atmosphere. Author

Subject Categories:

  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE