Hearing faculty testing

Details Hearing faculty testing Hearing faculty testing

1988-06-06

1989-12-05

Chapman, John

Measuring and testing

Vibration

By mechanical waves

128746, A61B 504

Patent

active

048844470

ABSTRACT:
Hearing faculty test apparatus, for use in relation to the inner ear by way of the so-called cochlear echo, repeatedly applied a linearly balanced set of acoustic stimuli to the ear, individually sums each related set of responses to the stimuli set, interrogates each sum to detect components above a predetermined threshold, and averages sums on a selective basis depend on the interrogation. Preferably sums are passed for averaging only when whooly within the threshold. Also, averaging is preferably by use of two like averagers to which accepted sums are applied in alternating manner, with the two averages being fed to a correlator.

REFERENCES:
patent: 3799146 (1974-03-01), John et al.
patent: 4374526 (1983-02-01), Kemp
Acousting Emission Cochleography-Practical Aspects, D. T. Kemp, P. Bray, L. Alexander and A. M. Brown, From the Department of Audiology, Institute of Larynogology and Otology, Gray's Inn Road, London WCIX 8EE, England pp. 71-95.

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