Contribution

Poster cancelled: Design and calibration of a flexible digital microelectromechanical system microphone array for free-field sound field sampling

Authors

* Presenting author
Day / Time: 20.03.2025, 11:00-11:40
Room: Hall E, Poster Island E
Typ: Poster
Session: Acoustic Measurements and Sensor Technology (Poster Island E)
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: Digital microelectromechanical system (MEMS) microphones are compact devices that provide high-fidelity sound capture and can be integrated into electronic products, such as smartphones and headphones. Nowadays, applications, MEMS microphones not only record ambient sounds but also offer advanced features, including active noise cancellation, directional capabilities, and voice recognition. These advantages make digital MEMS microphones essential components in modern consumer electronics, enhancing the audio experience and enabling sophisticated audio processing functionalities. Currently, calibration standards exist only for single microphone. To enhance the accuracy and convenience of digital MEMS microphone calibration, this paper proposes a substitution-based method for calibrating a digital MEMS microphone array in free field. The measurement procedure covering the range from 100 Hz to 12 kHz along with a sensitivity parameter suitable for digital microphones, is presented together with an uncertainty analysis.