DOLPHIN SOUND ANALYSIS
(updated March 2. 1998)
Signature Whistles ?
The following two samples are probably the acoustic signatures of the vocalizing pilotwhales.
Whistles which were produced every few seconds by free-ranging Globicephala mac., characteristic for signature calls.
Whistle 1, Duration = 0.95s
Analysis at 597ms: High number of harmonics
Wavesample from 525ms to 680ms shows amplitude modulation
Whistle 2 Duration= 0.75s
Analysis at 503ms
3D - FFT by SpectraPlus 4.0
As shown in the spectrogram, many harmonic peaks get visible in this frequency analysis.
This whistle I would classify as non-signature whistle. This whistle contour appears in many variations of frequency and duration. The lower number of harmonics is significant.
Analysis at 259ms
Peaks at approx. 4.3, 8.7, 13, 17.3 and 21.6 kHz
Previous Page Go Top Next Page
Technical devices: B&K Hydrophone, Aiwa DAT Recorder 48 kHz
Software used: Sounddesigner II, CoolEdit, SpectraPlus, PaintShopPro
Copyright © 1998 by Ulrich Reinartz - Web Design
Impressum: Ulrich Reinartz Selchowerstr.30 12049 Berlin St.Nr.:16/489/50326 email@example.com