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FRANK H. RODIN, M.D.

Arch Otolaryngol. 1930;11(4):463-474.

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

The following is the first report showing a systematic survey of the hearing of all the school children of a large city, from 9 to 16 years of age.

The introduction of the phonograph audiometer¹ (Western Electric No. 4-A) made possible the testing of the hearing of a large number of persons at one time. This instrument is now used in many cities for the examination of school children.

The phonograph audiometer (fig. 1) is an instrument consisting of a phonograph and records through which speech vibrations, consisting of numbers, are conducted to telephone receivers attached to the hearers' ears. Forty persons can be tested at one time. Figure 2 shows an arrangement of such a group. Blank forms (fig. 3) are distributed to the children on which they write the numbers as they hear them. The loudness of the consecutive numbers is decreased in uniform steps, and by comparing . . . [Full Text PDF of this Article]

Author Affiliations
SAN FRANCISCO

From the Division of School Health Inspection, Department of Public Health, William C. Hassler, M. D., Health Officer.

Footnotes
Submitted for publication, Sept. 6, 1929.

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