Accession Number : AD0620150

Title :   THE EFFECT OF NOISE-INDUCED TEMPORARY DEAFNESS UPON VOCAL INTENSITY.

Descriptive Note : Research rept.,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Black,John W.

Report Date : 30 JAN 1951

Pagination or Media Count : 11

Abstract : Twenty-four groups of males, six members per group, read phrases before and after 120 minutes exposure to simulated cock-pit noise. At the time of the reading a threshold measurement was secured of the readers' auditory acuity at 512 c.p.s. The exposure to noise reduced the mean hearing values nine decibels and increased the vocal intensity half of this amount. The recovery in neither instance was complete after 15 minutes of silence. The trends of recovery, in so far as they progressed, were linear in both sets of measures. Vocal intensity is apparently not solely a function of the intensity of the airborne side-tone. (Author)

Descriptors :   (*PSYCHOACOUSTICS, SPEECH), (*SPEECH, PSYCHOACOUSTICS), (*AUDITORY ACUITY, NOISE), HEARING, DEAFNESS, THRESHOLDS(PHYSIOLOGY), INTENSITY, AVIATION MEDICINE

Distribution Statement : APPROVED FOR PUBLIC RELEASE