NDLI: Discrimination of the signals with identical energy spectra by the bottlenose dolphin

Content Provider	IEEE Xplore Digital Library
Author	Zaslavskiy, G.L.
Copyright Year	2003
Description	Author affiliation: Tel Aviv Univ., Israel (Zaslavskiy, G.L.)
Abstract	Dolphins are capable of discriminating a small click followed by a large click from a time reversed pair of the same clicks. Because the time reverse of a signal does not change its energy spectrum it appeared that the dolphins discriminated the waveforms of the mirror image double clicks. A short-time spectral analysis with a 0.3-ms chi-square window has been suggested as an alternative to the time domain discrimination of the double clicks with identical energy spectra. The length of the analysis window was chosen based on the dolphin's auditory time resolution of around 0.3 ms and integration time of 0.265 ms. Dolphin's discrimination of three different types of time mirror image signals is discussed in this paper. Our experiments indicate that the dolphin's auditory analysis window is not bigger than around 0.1 ms. The dolphin's performance appeared to be more coherent with the time domain analysis of the mirror image stimuli than with the short-time frequency analysis.
Sponsorship	Dept. of the Navy Sci. and Technol. Coalition for Enhanced Marine Resources Orincon Ceros Harbour Offshore Inc
Starting Page	633
Ending Page	641
File Size	649168
Page Count	9
File Format	PDF
ISBN	0933957300
DOI	10.1109/OCEANS.2003.178386
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Dolphins Mirrors Auditory system Frequency Time domain analysis Energy resolution Spectral analysis Signal resolution Image analysis Performance analysis
Content Type	Text
Resource Type	Article

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