Please use this identifier to cite or link to this item: https://doi.org/10.1145/2426656.2426673
Title: Low cost crowd counting using audio tones
Authors: Kannan, P.G.
Venkatagiri, S.P.
Chan, M.C. 
Ananda, A.L.
Peh, L.-S.
Keywords: Audio processing
Simple tones
Speakers/microphones
Tone counting
Issue Date: 2012
Source: Kannan, P.G.,Venkatagiri, S.P.,Chan, M.C.,Ananda, A.L.,Peh, L.-S. (2012). Low cost crowd counting using audio tones. SenSys 2012 - Proceedings of the 10th ACM Conference on Embedded Networked Sensor Systems : 155-168. ScholarBank@NUS Repository. https://doi.org/10.1145/2426656.2426673
Abstract: With mobile devices becoming ubiquitous, collaborative applications have become increasingly pervasive. In these applications, there is a strong need to obtain a count of the number of mobile devices present in an area, as it closely approximates the size of the crowd. Ideally, a crowd counting solution should be easy to deploy, scalable, energy efficient, be minimally intrusive to the user and reasonably accurate. Existing solutions using data communication or RFID do not meet these criteria. In this paper, we propose a crowd counting solution based on audio tones, leveraging the microphones and speaker phones that are commonly available on most phones, tackling all the above criteria. We have implemented our solution on 25 Android phones and run several experiments at a bus stop, aboard a bus, within a cafeteria and a classroom. Experimental evaluations show that we are able to achieve up to 90% accuracy and consume 81% less energy than the WiFi interface in idle mode. Copyright © 2012 ACM.
Source Title: SenSys 2012 - Proceedings of the 10th ACM Conference on Embedded Networked Sensor Systems
URI: http://scholarbank.nus.edu.sg/handle/10635/40546
ISBN: 9781450311694
DOI: 10.1145/2426656.2426673
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