Nonlinear Distortion of Microphone in Probe for Otoacoustic Emission Measurements

Kód výsledku v 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>

Výsledek na webu

<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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Jazyk výsledku

angličtina

Název v původním jazyce

Nonlinear Distortion of Microphone in Probe for Otoacoustic Emission Measurements

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Nonlinear Distortion of Microphone in Probe for Otoacoustic Emission Measurements

Popis výsledku anglicky

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.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GC23-07621J" target="_blank" >GC23-07621J: Otoakustické emise v normální kochlee a při přetlaku v endolymfatickém prostoru kochley: modelování a experimenty</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Akustické listy

ISSN

1212-4702

e-ISSN

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Svazek periodika

27

Číslo periodika v rámci svazku

1-4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

3-6

Kód UT WoS článku

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EID výsledku v databázi Scopus

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