Spectrum Analysis Signature Whistle of Bottlenose Dolphins (Tursiops aduncus) at Captive, Indonesia with Yule-Walker AR and Welch Power Spectral Density Method
- *Corresponding Author:
- Lubis MZ
Faculty of Fisheries and Marine Sciences, Department of Marine Science and Technology
Bogor Agricultural University, Jln Agatis Kampus IPB Dramaga, Bogor, 16680, Indonesia
Tel: +62 251 8425635
E-mail: [email protected]
Received date: May 16, 2016; Accepted date: June 07, 2016; Published date: June 13, 2016
Citation: Lubis MZ, Wulandari PD, Pujiyati S, Hestirianoto T, Sultan K, et al. (2016) Spectrum Analysis Signature Whistle of Bottlenose Dolphins (Tursiops aduncus) at Captive, Indonesia with Yule-Walker AR and Welch Power Spectral Density Method. J Marine Sci Res Dev 6:195. doi: 10.4172/2155-9910.1000195
Copyright: © 2016 Lubis MZ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Signal and spectrum analysis signature whistle of bottlenose dolphins using Wavelab, and Raven Pro 1.5 software. Analysis spectrum of bottlenose dolphin with software analysis Raven Pro 1.5 with wave data channels 1 with sample rates is 44100 Hz, encoding data 16-bit signed, length time duration is 0,7 second, and samples of data is 32386 and have 6 pattern of signature whistle bottlenose dolphins. Analysis of power spectral density used Power Spectral Density (PSD) Yule-Walker AR and Welch Power Spectral Density of signature whistles with location of research in safari park captivity, Indonesia. The pattern seen in the sound has six patterns of range is at 100-700 ms with frequency 6-22 kHz. Interval of whistle have range in pattern 1 is 100-200 ms, pattern 2 is 200-300 ms, pattern 3 is 320-370 ms, pattern 4 is 430-550 ms, pattern 5 is 550-600 and pattern 6 is 600-650 ms. Range intensity color -47 until -48 dB, range frequency 1-8 kHz, time duration 0-500 ms. Highest intensity value of signature whistle bottlenose dolphins (Tursiops aduncus) is -37.71 dB in frequency 18 kHz with time duration 100 ms. Yule-Walker AR methos have result in marker 1 (perpendicular line) with clay color have (x) 2728 and (y) -15.70 dB, and marker 2 with interrupted line have (x) value 5456 and (y) value -5.55 dB. Welch method have result in marker 1 (perpendicular line) with clay color have (x) 1365 and (y) -32,67 dB, and marker 2 with interrupted line have (x) value 2728 and (y) value -32.46 dB Welch power spectral density is a good method used for signal and spectrum analysis with object signature whistle of bottlenose dolphins.