High-frequency clicks

In this paper we explore the content of high frequency dolphin click sequence (500kHz frequency sampling) by Gabor scalogram under the recent scattering toolkit. It is demonstrating, for the first time at our knowledge, that some formants may be present into the Tursiops' click sequence. We illustrate this new paradigm on some recent high frequency recordings. Consecutive clicks that contain regions of higher acoustic energies at approximately the same frequency are defined as formants. We then compare some revealed 'phonemes'. This preliminary study demonstrate the need for scaled algorithms capable of ascertaining such high dimensional recordings, which may be essential in order to get deeper knowledge on cetacean communication, and the survey of some endangered species.