Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Joseph E. Blue"'
Publikováno v:
The Journal of the Acoustical Society of America. 105:3575-3583
The hearing thresholds of two adult manatees were measured using a forced-choice two alternative paradigm and an up/down staircase psychometric method. This is the first behavioral audiogram measured for any Sirenian, as well as the first underwater
Autor:
Joseph E. Blue, Dimitri Donskoy
Publikováno v:
The Journal of the Acoustical Society of America. 95:1977-1982
A new concept of a low‐frequency (
Publikováno v:
The Journal of the Acoustical Society of America. 91:1169-1179
Publikováno v:
The Journal of the Acoustical Society of America. 87:2535-2540
Wavenumber‐frequency calibration of underwater, planar, receiving arrays requires the ability to generate single‐wavenumber pressure fields over the surface of the array. When the wavenumber‐frequency region of interest is evanescent, transmitt
Publikováno v:
The Journal of the Acoustical Society of America. 115:2554-2555
Some researchers speculate Sirenians might utilize infrasonic communication like their distant elephant cousins; however, audiogram measurements and calibrated manatee vocalizations do not support this contention. A comprehensive series of hearing te
Publikováno v:
The Journal of the Acoustical Society of America. 124:2466-2466
Marine mammals are vulnerable to ship collisions when they are near the surface. Here acoustical laws of reflection and propagation can limit their ability to hear and locate the noise from approaching vessels. Defining the physics of near surface ac
Publikováno v:
The Journal of the Acoustical Society of America. 124:2549-2549
Ultrasonic hearing thresholds above 46 kHz were first measured with a test‐sophisticated manatee in 1997. Using staircase and method of constants paradigms, pure tones (38–96 kHz) were presented in force‐choice two‐alternative tests. Repeatab
Publikováno v:
The Journal of the Acoustical Society of America. 124:2548-2548
The efficacy of the alarm was documented during controlled slow boat approaches under two experimental conditions: (1) approaches without an alarm and (2) same boat approaches with an alarm. Experiments conducted in a NASA security area provided cont
Publikováno v:
The Journal of the Acoustical Society of America. 124:2548-2548
A comprehensive series of underwater psychoacoustic tests was conducted to measure the hearing abilities of West Indian manatees. Pure tones, complex and real world sounds were presented to manatees under controlled acoustical conditions. The results