Crowdsensing the speaker count in the wild: Implications and applications

Chenren Xu, Sugang Li, Yanyong Zhang, Emiliano Miluzzo, Yi Farn Chen

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


The mobile crowdsensing (MCS) paradigm enables large-scale sensing opportunities at lower deployment costs than dedicated infrastructures by utilizing today¿s large number of mobile devices. In the context of MCS, end users with sensing and computing devices can share and extract information of common interest. In this article, we examine Crowd++, an MCS application that accurately estimates the number of people talking in a certain place through unsupervised machine learning analysis on audio segments captured by mobile devices. Such a technique can find application in many domains, such as crowd estimation, social sensing, and personal well being assessment. In this article, we demonstrate the utility of this technique in the context of conference room usage estimation, social diaries, and social engagement in a power-efficient manner followed by a discussion on privacy and possible optimizations to Crowd++ software.

Original languageEnglish (US)
Article number6917408
Pages (from-to)92-99
Number of pages8
JournalIEEE Communications Magazine
Issue number10
StatePublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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