| Accurate estimation of the duration of tonal signals emitted by marine mammals. | |
| | |
MedLine Citation:
|
PMID: 18532118 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Passive acoustic marine mammals detection and classification is of great importance nowadays. The goal of this article is to present a tool that can be used to accurately measure the duration of tonal emissions from marine mammals, helping to classify them. Marine mammals emissions can be split into two different kinds and one of them is tonal emission. It can be defined by its narrow band frequency pattern. Narrow band signals can be detected in the timefrequency space thanks to the use of the spectrogram and thanks to a quadratic contrast criterion. The expression of this criterion for signal-only and noise-only is straightforward. This article will introduce the expression of a lower bound of the expectation of the criterion when signal and noise are mixed. As this lower bound is a function of signal to noise ratio, it can be used to threshold the criterion with the desired signal to noise ratio value. When the criterion is computed along time on a sliding window, narrow band signals with a higher snr than the thresholding one are detected as soon as they appear and until they vanish, giving an accurate estimation of the duration of such signals. |
| | |
Authors:
|
Nicolas Sentenac |
Related Documents
:
|
21610698 - Liglur restores visual responses in rodent models of inherited blindness. 18699048 - Quasi-optical diplexer for millimeter wavelengths. 1439498 - Place-specific derived cochlear microphonics from human ears. 8414898 - Parameters affecting gap detection in the rat. 19360488 - Plasticity of circadian activity and body temperature rhythms in golden spiny mice. 12872128 - Spatiotopic temporal integration of visual motion across saccadic eye movements. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 123 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2008 May |
Date Detail:
|
Created Date: 2008-06-05 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 3776 Citation Subset: IM |
Affiliation:
|
Thales Underwater Systems, 525, route des dolines, BP 157, 06903 Sophia Antipolis, France, nicolas.sentenac@fr.thalesgroup.com. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Ultrasonic production and reception in frogs: Lessons from Asia.
Next Document: The Locust's tympanal mechanics.