While public interest for technologies that produce and deliver immersive VR content has been growing the price point for these tools has remained relatively high. This paper presents a low-cost, high-quality first-order ambisonics (FOA) microphone based on low-noise microelectromechanical systems (MEMS). This paper details the design, fabrication, and testing of a MEMS FOA microphone including its frequency and directivity response. To facilitate high resolution directivity response measurements a low-cost, automatic rotating microphone mount using an Arduino was designed. The automatic control of this platform was integrated into an in-house acoustic measurement library built in MATLAB allowing the user to generate polar plots at resolutions down to 1.8°. Subjective assessments compared the FOA mic prototype to commercially available FOA solutions at higher price points.

Authors: Zalles, Gabriel; Kamel, Yigal; Anderson, Ian; Lee, Ming Yang; Neil, Chris; Henry, Monique; Cappiello, Spencer; Mydlarz, Charlie; Baglione, Melody; Roginska, Agnieszka
Affiliations: New York University, New York, NY, USA; New York University, CUSP, New York, NY, USA(See document for exact affiliation information.)
AES Convention: 143 (October 2017) Paper Number: 9857
Publication Date: October 8, 2017
Subject: Transducers—Part 2

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