An Innovative Architecture of Full-Digital Microphone Arrays Over A²B Network for Consumer Electronics

نویسندگان

چکیده

Microphone arrays of various sizes and shapes are currently employed in consumer electronics devices such as speakerphones, smart TVs, smartphones, headphones. In this paper, a full-digital, planar microphone array is presented. It makes use digital Micro Electro-Mechanical Systems (MEMS) microphones, connected through the Automotive Audio Bus (A 2 B). A clock propagation model for B networks, developed previous work, was to estimate effects jitter delay on arrays. will be shown that allows robust data transmission, while ensuring deterministic latency channels synchronization, thus overcoming signal integrity issues which usually affect MEMS capsules. The positioning also discussed since it greatly affects spatial accuracy beamforming. Numerical simulations were performed four regular geometries identify optimal layout terms number capsules beamforming directivity. An with equilateral triangle geometry three vertices one center, built. Experimental measurements performed, obtaining an excellent matching numerical simulations. Finally, concept (meta-array) presented, designed by combining several triangular units analyzed

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ژورنال

عنوان ژورنال: IEEE Transactions on Consumer Electronics

سال: 2022

ISSN: ['1558-4127', '0098-3063']

DOI: https://doi.org/10.1109/tce.2022.3187453