Time-frequency and advanced frequency estimation techniques for the investigation of bat echolocation calls.
In this paper, techniques for time-frequency analysis and investigation of bat echolocation calls are studied. Particularly, enhanced resolution techniques are developed and/or used in this specific context for the first time. When compared to traditional time-frequency representation methods, the proposed techniques are more capable of showing previously unseen features in the structure of bat echolocation calls. It should be emphasized that although the study is focused on bat echolocation recordings, the results are more general and applicable to many other types of signal.
Institute for Digital Communications, School of Engineering and Electronics, The University of Edinburgh, Alexander Graham Bell Building, King's Buildings, Edinburgh EH9 3JL, United Kingdom. kopsinis@ieee.org
Yannis
Y
Kopsinis
Elias
E
Aboutanios
Dean A
DA
Waters
Steve
S
McLaughlin
D000162:Acoustics; D000465:Algorithms; D000818:Animals; D000835:Animals, Wild; D002685:Chiroptera; D004455:Echolocation; D012815:Signal Processing, Computer-Assisted; D013018:Sound Spectrography; D013997:Time Factors