Table of Contents
ISRN Sensor Networks
Volume 2012, Article ID 590651, 5 pages
Research Article

Audio Streaming with Silence Detection Using 802.15.4 Radios

1Department of Information Technology, Sinhgad College of Engineering, Pune University, Pune 411 041, India
2Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata 700 032, India
3IBM India Pvt. Ltd., Salt Lake, Kolkata 700 091, India

Received 20 September 2012; Accepted 8 November 2012

Academic Editors: T.-S. Chen, P. Leone, and A. Olteanu

Copyright © 2012 A. W. Rohankar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Short-range radios with low data rate are gaining popularity due to their abundant commercial availability. It is imperative that high-speed multimedia would be an attractive application field with these radios. Audio over 802.15.4 compliant radios is a challenging task to achieve. This paper describes a real-time implementation of audio communication using 802.15.4 radios. Silence detection and soft ADPCM are the main features of our work. Our results show that silence detection improves bandwidth optimization and audio communication performance over low bit-rate radios.