Contribution

Modeling of Microchannel Acoustics: Relevant Phenomena and Acoustic Impedance Models

Authors

* Presenting author
Day / Time: 20.03.2025, 11:00-11:40
Room: Hall E, Poster Island H
Typ: Poster
Session: Electroacoustics and Audio Signal Processing (Poster Island H)
Information: The posters will be exhibited in Hall E north from Tuesday to Thursday, sorted by thematic context in the poster island indicated in the session title. The poster session at the specified time offers the opportunity to enter into discussion with the authors.
Abstract: As is widely recognized, the design of microacoustic devices, such as microphones, must consider several physical phenomena relevant at microscales. These include, e.g., the viscosity, inertia, rarefaction, and compressibility of air in extremely small geometries. By using an accurate, parameterized model that is valid in the frequency range of interest, even at these tiny scales, the efficiency of optimizing designs of microacoustic devices can be significantly improved.To this end, this article presents miscellaneous approaches for modeling acoustic phenomena in microchannels of different geometries. It reviews the state of the art, suggests an acoustic impedance model for microchannels, and discusses its limitations and open questions. The contribution aims to provide practitioners with a clear and concise resource for a widely applicable acoustic model of microchannels.