Audiometer

Details Audiometer Audiometer

1982-11-05

1984-10-16

Rubinson, G. Z.

Measuring and testing

Vibration

By mechanical waves

381 56, A61B 407

Patent

active

044767242

ABSTRACT:
An audiometer which can be battery operated, is reliable and economical in current consumption has a digital control unit (10) which controls a LCD in matric form (11, 26). The digital control unit, in its simplest form, includes a data input stage (12) having two inputs (16, 18) receiving, respectively, input signals representative of amplitude and tone, or a spoken word, and a further input (14) which is test-person controlled, to provide a perception signal, operated by the person to be tested when the level of a certain tone, generated by a tone generator (G, 21) is perceived, or a spoken word is correctly heard. The data input stage is connected to a data bus which provides the respective data to a driver circuit (24) to drive the LCD matrix. Various accessories can be provided, such a curve generating stage (45), a memory (42), an output unit for a recorder, such as a plotter, and a separate input/output state (46) to receive, for example, stored data for comparison of an audiogram being taken of a test-person with prior, or statistically derived audiograms.

REFERENCES:
patent: 4107465 (1978-08-01), Charlebois et al.
patent: 4109106 (1978-08-01), Voss
patent: 4250503 (1981-02-01), Shanks
"Arzt und Wirtschaft", pp. 44, 45, Sep. 1979.
Hearing Instruments, 1977 p. 41.

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