Accession Number:

AD0653471

Title:

THE CORRECTION OF HELIUM SPEECH DISTORTION.

Descriptive Note:

Final rept., May 66-May 67

Corporate Author:

HRB-SINGER INC STATE COLLEGE PA

Personal Author(s):

• Brubaker,R. S.
• Wurst,J. W.

Report Date:

1967-05-01

Pagination or Media Count:

49.0

Abstract:

A technique for removing the distortion inherent in speech uttered in a helium-rich atmosphere is the object of considerable research. The report describes an approach which corrects the formant frequencies and the vowel-consonant ratios, two factors which are the most affected by the helium environment. The correction process occurs in real time, the signal suffering less than 10 milliseconds delay. Because the circuitry is largely digital, processor volume is estimated to be about 10 cubic inches after the first step toward microminiaturization is taken. Author

Descriptors:

• *HELIUM
• SPEECH
• INTELLIGIBILITY
• SPEECH
• CIRCUITS
• DIGITAL SYSTEMS
• REAL TIME
• DISTORTION
• SPEECH RECOGNITION
• UNDERWATER COMMUNICATIONS
• MICROPHONES
• PHONETICS
• AMPLIFIERS
• VOICE COMMUNICATIONS
• LIFE SUPPORT SYSTEMS

Subject Categories:

• Life Support Systems
• Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE