Rhythmic analysis of sperm whale broadband acoustic signals.

2009 ◽  
Vol 125 (4) ◽  
pp. 2738-2738 ◽  
Author(s):  
Natalia Sidorovskaia ◽  
Philip Schexnayder ◽  
Alexander Ekimov ◽  
James Sabatier ◽  
George E. Ioup ◽  
...  
Keyword(s):  
Sperm Whale ◽  
Acoustic Signals

Estimating the risk of temporary acoustic threshold shift, caused by hydroacoustic devices, in whales in the Southern Ocean

2005 ◽  
Vol 17 (1) ◽  
pp. 3-10 ◽  
Author(s):  
ULRICH KREMSER ◽  
PETER KLEMM ◽  
WOLF-DIETRICH KÖTZ
Keyword(s):  
Marine Mammals ◽  
Sperm Whale ◽  
Acoustic Signals ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Beaked Whale ◽  
Potential Threat ◽  
Technical Parameters ◽  
Close Range ◽  
The Impact

There is a potential threat to marine mammals from acoustic signals emitted by hydroacoustic devices. The impact on the hearing of marine mammals depends on the technical parameters of the instruments and on the exposure of the animal to noise pulses, as well as on the properties of the biological system, that is to say, on the anatomy and the audiogram of the animal. Here, the blue whale, the sperm whale and the beaked whale are taken as examples in an investigation of the potential exposure to noise pulses from the hydroacoustic instruments Hydrosweep and Parasound. Diving depths of the whales and relative speeds of the animals with respect to the survey vessels are taken into account, as well as the area impacted by the equipment, in estimating the level of sound needed to produce “temporary threshold shift” in an animal. The results suggest that auditory damage is only likely if animals pass the transducer at close range and that the impact on marine mammals can be mitigated by implementing prior detection and shut down procedures.

Classification of Fatigued Bills Based on a Support Vector Machine by Using the Amplitude Difference Features of Acoustic Signals

2011 ◽  
Vol 131 (8) ◽  
pp. 1495-1501
Author(s):  
Dongshik Kang ◽  
Masaki Higa ◽  
Hayao Miyagi ◽  
Ikugo Mitsui ◽  
Masanobu Fujita ◽  
...  
Keyword(s):  
Support Vector Machine ◽  
Acoustic Signals ◽  
Support Vector ◽  
Amplitude Difference

Estimating Atmospheric Turbulence Parameters from the Envelopes of Radio Acoustic Signals

2001 ◽  
Vol 55 (8) ◽  
pp. 5
Author(s):  
V. M. Kartashov ◽  
V. A. Petrov ◽  
Ye. G. Proshkin ◽  
G. I. Sidorov
Keyword(s):  
Atmospheric Turbulence ◽  
Acoustic Signals ◽  
Turbulence Parameters
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