Whose Line Sound is it Anyway? Identifying the Vocalizer on Underwater Video by Localizing with a Hydrophone Array

Animal Behavior and Cognition

关键词: Spotted dolphin;    Bottlenose dolphin;    Echolocation;    Vocalization;    Whistles;    Localization;    Stenella frontalis;   

DOI  :  10.12966/abc.07.11.2016

来源: DOAJ

【 摘 要 】

A new device that combined high-resolution (1080p) wide-angle video and three channels of high-frequency acoustic recordings (at 500 kHz per channel) in a portable underwater housing was designed and tested with wild bottlenose and spotted dolphins in the Bahamas. It consisted of three hydrophones, a GoPro camera, a small Fit PC, a set of custom preamplifiers and a high-frequency data acquisition board. Recordings were obtained to identify individual vocalizing animals through time-delay-of-arrival localizing in post-processing. The calculated source positions were then overlaid onto the video – providing the ability to identify the vocalizing animal on the recorded video. The new tool allowed for much clearer analysis of the acoustic behavior of cetaceans than was possible before.

【 授权许可】

Unknown