Nonlinear Distortion of Microphone in Probe for Otoacoustic Emission Measurements

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00382990" target="_blank" >RIV/68407700:21230/24:00382990 - isvavai.cz</a>

Result on the web

<a href="https://www.czakustika.cz/misc/aklisty/27-14.pdf" target="_blank" >https://www.czakustika.cz/misc/aklisty/27-14.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Nonlinear Distortion of Microphone in Probe for Otoacoustic Emission Measurements

Original language description

Nonlinearities in otoacoustic emission (OAE) measurement probes can significantly impact the accuracy of distortion-product otoacoustic emissions (DPOAE) results. This paper investigates the nonlinear behavior of condenser microphones used in these probes. Due to the lack of a perfectly linear reference source, we employ harmonic correction methods found in the literature to address the nonlinearities. We measure the second and third harmonics produced by the microphone, estimate key parameters of the nonlinear microphone model from these measurements, and use this model to predict the nonlinear behavior of the microphone in two different measurement scenarios. In the first scenario, without a low-frequency bias tone, the nonlinear distortion produced by the microphone is negligible. In the second scenario, with a low-frequency bias tone, the nonlinear distortion becomes significant. The findings demonstrate that we are able to measure the microphone’s nonlinearities and estimate key model parameters to predict the significance of these nonlinearities in different measurement scenarios.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/GC23-07621J" target="_blank" >GC23-07621J: Otoacoustic emissions in normal cochlea and cochlea with endolymphatic hydrops: modeling and experiments</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Akustické listy

ISSN

1212-4702

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

1-4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

3-6

UT code for WoS article

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EID of the result in the Scopus database

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