Evaluation of Microphone Nonlinearities in Probes for Measurement of Otoacoustic Emissions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00384811" target="_blank" >RIV/68407700:21230/25:00384811 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.61782/fa.2025.0366" target="_blank" >https://doi.org/10.61782/fa.2025.0366</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.61782/fa.2025.0366" target="_blank" >10.61782/fa.2025.0366</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of Microphone Nonlinearities in Probes for Measurement of Otoacoustic Emissions
Original language description
Measurement of Distortion Product Otoacoustic Emissions (DPOAE) relies on evaluating the nonlinear response of the inner ear to two-tone excitation signals, specifically identifying the cubic intermodulation distortion products. However, the accuracy of these measurements can be adversely affected by nonlinear distortions within the electroacoustic measurement chain. This study examines the nonlinear behavior of microphones embedded in probes used for otoacoustic emission measurements. Nonlinearities were characterized using the source harmonic correction method reported in the literature, as there is no perfectly linear source of excitation signal. We focused on the quantification of second- and third-order harmonic distortion, which are key components of the nonlinear response of the microphone. The results are analyzed and compared to similar measurements performed on conventional and MEMS microphones, revealing specific characteristics of the probe microphone’s nonlinear response. Strategies for reducing nonlinear distortion in this context, as described in the literature, are also discussed. These findings contribute to the understanding of the limitations and potential improvements in the measurement accuracy of otoacoustic emissions by addressing microphone-induced nonlinearities.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
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)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Forum Acusticum 2025
ISBN
978-84-87985-35-5
ISSN
3005-7124
e-ISSN
3005-7124
Number of pages
6
Pages from-to
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Publisher name
European Acoustics Association
Place of publication
Madrid
Event location
Malaga
Event date
Jun 23, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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