Departmental Papers (EES)

Document Type

Journal Article

Date of this Version

September 2000


To locate calling animals in reverberant environments from recordings on widely separated receivers, a fourth-moment "Augmented-Template Correlation Function" (ATCF) helps identify which of many peaks in each cross-correlation function is that corresponding to the difference in travel times for the first arrivals (reference-lag). This peak may not be the largest. The ATCF, by providing an approximate correlation between auto- and cross-correlation functions, can be orders of magnitude more efficient in selecting the reference-lag than the alternative of randomly selecting peaks. The ATCF's efficacy increases with the number of paths and their signal-to-noise ratios.


Copyright ASA. Reprinted from Journal of the Acoustical Society of America, Volume 108, Issue 3, September 2000, pages 1349-1352.
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Date Posted: 27 July 2005

This document has been peer reviewed.