High-Resolution Speech Signal Reconstruction in Wireless Sensor Networks

Data streaming is an emerging class of applications for sensor networks that has very high bandwidth and processing power requirements. In this paper, a new approach for speech data streaming is proposed, which is based on a distributed scheme. This scheme focuses on balancing the energy consumption among nodes in a sensor network by allowing low- resolution streams from multiple nodes to be fused at a central processing node in order to produce an enhanced resolution speech signal. Simulations and experimental results with real microphone signals are presented.