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JOHN GUTTMAN, M.D.; L. B. HAM, PH.D.

Arch Otolaryngol. 1930;12(4):425-438.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

In any measurement of the hearing sensation, there are three characteristics of the incoming sound waves to be considered, namely : intensity, frequency and quality.

The intensity, as far as hearing is concerned, is measured in terms of the "threshold of sensation" (or simply "threshold"), which is the minimum intensity of sound producing a sensation of hearing. It is measured by the tuning fork, audiometer, acoumeter, Galton whistle, speech, watch, etc. The last two methods tell something as to the quality of the sound one hears. However, the quality of sound is not to be considered in this paper.

In order that the ear's faculty of recognizing different frequencies may be measured, there must be presented to the ear two or more tones of different frequencies. The faculty by which the similarity or dissimilarity of these two tones is recognized is called "the comparing or differentiating faculty of the . . . [Full Text PDF of this Article]

Author Affiliations
NEW YORK

Footnotes
Submitted for publication, April 19, 1930.

Read before the New York Academy of Medicine, Section of Otology, March 14, 1930.

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