Abstract
Recent advancements in low-power wireless communication technologies allow for rapid deployable embedded monitoring applications with a deployment lifetime of several weeks of months. In this work, we present a work-in-progress wireless audio streaming solution that uses a network of small wireless microphone arrays to form a distributed steerable large-aperture array. To keep the application’s communication bandwidth requirements manageable, we use a hierarchical data fusion algorithm that allows for delay-and-sum style beamforming to be carried out in-network, streaming the audio data along a routing tree to a base station. With the proposed distributed beamforming approach, it is sufficient to communicate as few as log(n) data streams for a network of n sensors, which is a significant reduction from a centralized approach that would require all n streams to be routed to the base station.
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Sallai, J., Lédeczi, Á., Koutsoukos, X., Volgyesi, P. (2010). Steerable Distributed Large-Aperture Audio Array Using Low-Power Wireless Acoustic Sensor Nodes. In: Zavoral, F., Yaghob, J., Pichappan, P., El-Qawasmeh, E. (eds) Networked Digital Technologies. NDT 2010. Communications in Computer and Information Science, vol 88. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14306-9_29
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DOI: https://doi.org/10.1007/978-3-642-14306-9_29
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-14305-2
Online ISBN: 978-3-642-14306-9
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