A background noise reduction technique for improving false killer whale (Pseudorca crassidens) localisation

McPherson, Craig R., Turner, Phil, Kenny, Owen P., and McPherson, Geoff R. (2006) A background noise reduction technique for improving false killer whale (Pseudorca crassidens) localisation. In: Abstracts from the 4th Joint Meeting of the Acoustical Society of America and Acoustical Society of Japan (120), p. 3228. From: 4th Joint Meeting of the Acoustical Society of America and Acoustical Society of Japan, 28 November - 2 December 2006, Hawaii.

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Abstract

The passive localization of false killer whales (Pseudorca crassidens) in acoustic environments comprised of discontinuous ambient, anthropogenic, and animal sounds is a challenging problem. A background noise reduction technique is required to improve the quality of sampled recordings, which will assist localization using auditory modeling and signal correlation at extended ranges. The algorithm developed meets this requirement using a combination of adaptive percentile estimation, a median-based tracker, and Gaussian windowing. The results indicate successful improvement of the signal-to-noise ratio, and consequently a significant increase in the detection range of false killer whales in acoustically complex environments.

Item ID: 10276
Item Type: Conference Item (Abstract / Summary)
ISSN: 1520-8524
Date Deposited: 24 Jun 2010 05:32
FoR Codes: 09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090609 Signal Processing @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8302 Fisheries - Wild Caught > 830299 Fisheries- Wild Caught not elsewhere classified @ 100%
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