A Comparative Study of the Normal and Pathological Ear with Regard to Intensity Level Preference and Intelligibility of Speech sounds

Authors

Noble H. Kelly, State University of Iowa

Document Type

Research

Abstract

Dr. S. N. Reger, of the University of Iowa, independently discovered that the relationship between intensity level and loudness in the abnormal ear is strikingly different from that in the normal. For example, in the normal ear a frequency of 4096 cycles a given number of decibels above the threshold is judged as loud as 2048 cycles approximately the same number of decibels above the threshold. However, in abnormal ears, in which acuity is normal up to 2048 cycles but raised 60 decibels above threshold at 4096 cycles, an intensity level 10 decibels above the threshold at 4096 is judged as loud as 2048 cycles at 40 decibels above the threshold.

Publication Date

1936

Journal Title

Proceedings of the Iowa Academy of Science

Volume

43

Issue

1

First Page

289

Last Page

299

Copyright

©1936 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Kelly, Noble H. (1936) "A Comparative Study of the Normal and Pathological Ear with Regard to Intensity Level Preference and Intelligibility of Speech sounds," Proceedings of the Iowa Academy of Science, 43(1), 289-299.
Available at: https://scholarworks.uni.edu/pias/vol43/iss1/97