Characteristics of the acoustic distortion product 2f2-f1 from the normal human ear.

Abstract:

:The aim of this study was to determine the basic properties of the 2f2-f1 distortion product otoacoustic emissions (DPOEs) in 36 normally hearing subjects and to compare their characteristics with those of the 2f1-f2 DPOEs. The influence of stimulation parameters on 2f2-f1 DPOE behaviour was examined: i) stimulation levels varied from 40 to 70 dB sound pressure level in 10 dB steps; and ii) two values of the f2/f1 ratio were used (1.12 and 1.22). The prevalence and the level of the 2f2-f1 DPOEs depended on three parameters: f2 frequency, stimulation level and f2/f1 ratio. The results showed many differences between the characteristics of 2f1-f2 and 2f2-f1 DPOEs, probably due to their being generated by different mechanisms. Thus, the 2f2-f1 DPOEs may provide different information about the cochlear status and could be of clinical interest.

journal_name

Acta Otolaryngol

journal_title

Acta oto-laryngologica

authors

Erminy M,Avan P,Bonfils P

doi

10.1080/00016489850155099

subject

Has Abstract

pub_date

1998-01-01 00:00:00

pages

32-6

issue

1

eissn

0001-6489

issn

1651-2251

journal_volume

118

pub_type

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