Accession Number:

ADA801559

Title:

Tolerance for Pure Tones and Speech in Normal and Hard-of-Hearing Ears

Corporate Author:

CENTRAL INST FOR THE DEAF ST LOUIS MO

Report Date:

1946-07-31

Abstract:

The investigation represents a systematic study of the quantitative and qualitative nature of the tolerance limits for speech and pure tones of normal and deafened ears. With reference to the Aural Rehabilitation Program of the armed forces, the tests were made to yield data pertinent to the design characteristics of future hearing aids, and to provide information which would guide procedures in the clinical selection of hearing aids. The threshold of discomfort, tickle, and pain produced by pure tones and speech were determined in approximately 16,000 observations on 46 normal and 46 hard-of-hearing cases, the latter representing fairly balanced distribution of clinical types of deafness. The results of the tests are summarized and tabulated, and the data indicate that 130 db appears to be the greatest useful maximum output in a hearing aid.

Supplementary Note:

DOI: 10.21236/ADA801559

Pages:

0103

Identifiers:

Communities Of Interest:

Modernization Areas:

Distribution Statement:

Approved for public release; distribution is unlimited.

Contract Number:

OEMSR-1201

File Size:

8.16MB