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http://dx.doi.org/10.6109/jkiice.2022.26.5.808

Wide-range Lecturing Microphone System using Multiple Range Sensor  

Oh, Woojin (School of Electronic Engineering, Kumoh National University of Technology)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.26, no.5, 2022 , pp. 808-811 More about this Journal
Abstract
In this paper, a wide-range microphone system for lectures using dual 3D sensors is proposed. A previous work using a single sensor had lowering the detecting threshold to support wide-area. However it was found that an error occurred when lecturer wears clothes with low reflectivity or has small body size. When multiple sensors are used to expand the coverage it could be cause various problems. Each sensor could show different distance to the same target. We derive the rotation angle and and compensate for lecturing microphone system using sensors on the line. The proposed method shows a little improvement in performance by about 1dB compared to the previous works but the performance is uniform in all areas regardless of reflectivity.
Keywords
Wide range microphone; Multiple range sensor; Array microphone; Self sensor adjustment;
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