Nonlinear Behavior of Condenser Microphones: Analytical Modeling and Experimental Validation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00384805" target="_blank" >RIV/68407700:21230/25:00384805 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.61782/fa.2025.0624" target="_blank" >https://doi.org/10.61782/fa.2025.0624</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.61782/fa.2025.0624" target="_blank" >10.61782/fa.2025.0624</a>
Alternative languages
Result language
angličtina
Original language name
Nonlinear Behavior of Condenser Microphones: Analytical Modeling and Experimental Validation
Original language description
This study investigates the nonlinear behavior of condenser microphones, with a focus on nonlinear capacitance as the primary source of nonlinearity. An experimental transducer was developed, consisting of a circular membrane and a fixed electrode with a central hole leading to a backing cavity. A linear analytical model for membrane displacement was derived using a multimodal approach, while a nonlinear model from the literature was used to relate the membrane displacement to the output voltage of the microphone. Experimental measurements of the nonlinear output of the transducer were conducted. A harmonic correction method from the literature was used to linearize the acoustic pressure incident on the transducer's membrane. These measurements were compared with theoretical predictions. The dependence of the first, second, and third harmonics of the output voltage on the input acoustic pressure level was analyzed. The results show good agreement between theoretical predictions and experimental data, particularly for the first and second harmonics, demonstrating the effectiveness of the proposed model in capturing the nonlinear characteristics of condenser microphones.
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
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Continuities
S - Specificky vyzkum na vysokych skolach
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
7
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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