Record Details

Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks.

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks.
 
Creator Haris, K.
Chakraborty, B.
Menezes, A.A.A.
Sreepada, R.A.
Fernandes, W.A.
 
Subject phase coupling
Hippocampus kuda
bioacoustic
 
Description Nonlinear phenomena in animal vocalizations fundamentally includes known features, namely, frequency jump, subharmonics, biphonation, and deterministic chaos. In the present study, the multifractal detrended fluctuation analysis (MFDFA) has been employed to characterize the phase couplings revealed in the feeding clicks of Hippocampus kuda yellow seahorse. Theb fluctuation function Fq(s), generalized Hurst exponent h(q), multifractal scaling exponent tau(q), and the multifractal spectrum f(alpha) calculated in the procedure followed were analyzed to comprehend the underlying nonlinearities in the seahorse clicks. The analyses carried out reveal long-range power-law correlation properties in the data, substantiating the multifractal behavior. The resulting delta h(q) spectru exhibits a distinct characteristic pattern in relation to the seahorse sex and size, and reveals a spectral blind spot in the data that was not possible to detect by conventional spectral analyses. The corresponding multifractal spectrum related width parameter delta h(q) is well clustered, defining the individual seahorse clicks. The highest degree of multifractality is evident in the 18 cm male seahorse, signifying greater heterogeneity. A further comparison between the seahorse body size and weight (wet) with respect to the width parameter delta h(q) and the second-order Hurst exponent h(q = 2) underscores the versatility of MFDFA as a robust statistical tool to analyze bioacoustic observations.
 
Date 2014-11-20T07:43:09Z
2014-11-20T07:43:09Z
2014
 
Type Journal Article
 
Identifier Journal of the Acoustical Society of America, vol.136(4); 2014; 1972-1981
no
http://drs.nio.org/drs/handle/2264/4635
 
Language en
 
Relation J_Acoust_Soc_Am_136_1972.jpg
 
Rights An edited version of this paper was published by and © 2014 Acoustical Society of America. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Acoustical Society of America