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Acoustic Laptops as a research enabler

By Michael Allen


The Acoustic ENSBox platform [1] enables practical distributed acoustic sensing by providing integrated hardware and software support in a single platform. It also features a highly accurate self-calibration system which eliminates the need for manual surveying of node reference positions. In this paper, we present an Acoustic Laptop, that enables distributed acoustic research through the use of a less resource-constrained and more readily available platform. It runs exactly the same software and uses the same sensor hardware as the Acoustic ENSBox, but replaces the embedded computing platform with a standard laptop. We describe the advantages of using the Acoustic Laptop as a rich prototyping platform for acoustic source localization and mote-class node localization applications. The strengths of this work lie in its value as an easily replicated prototyping platform that is extensible and resource-rich, and suitable for attended, pilot deployments. We show that the benefits gained by a laptop’s extra resources enable intensive signal processing in real-time, without optimization. This enables online, interactive experimentation with algorithms such as Approximated Maximum Likelihood. Applications developed using the Acoustic Laptop can also run on the more deployable Acoustic ENSBox platform, unmodified apart from performance optimizations.

Year: 2009
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