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Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production

Research output: Contribution to journalArticle

DOI

Standard

Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production. / Zimmer, W M X ; Madsen, P T ; Teloni, V ; Johnson, M P ; Tyack, P L .

In: Journal of the Acoustical Society of America, Vol. 118, No. 5, 11.2005, p. 3337-3345.

Research output: Contribution to journalArticle

Harvard

Zimmer, WMX, Madsen, PT, Teloni, V, Johnson, MP & Tyack, PL 2005, 'Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production', Journal of the Acoustical Society of America, vol. 118, no. 5, pp. 3337-3345. https://doi.org/10.1121/1.2082707

APA

Zimmer, W. M. X., Madsen, P. T., Teloni, V., Johnson, M. P., & Tyack, P. L. (2005). Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production. Journal of the Acoustical Society of America, 118(5), 3337-3345. https://doi.org/10.1121/1.2082707

Vancouver

Zimmer WMX, Madsen PT, Teloni V, Johnson MP, Tyack PL. Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production. Journal of the Acoustical Society of America. 2005 Nov;118(5):3337-3345. https://doi.org/10.1121/1.2082707

Author

Zimmer, W M X ; Madsen, P T ; Teloni, V ; Johnson, M P ; Tyack, P L . / Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production. In: Journal of the Acoustical Society of America. 2005 ; Vol. 118, No. 5. pp. 3337-3345.

Bibtex - Download

@article{783a8e675c7d4d75829153f9ee59c77d,
title = "Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production",
abstract = "Sperm whales (Physeter macrocephalus) produce multipulsed clicks with their hypertrophied nasal complex. The currently accepted view of the sound generation process is based on the click structure measured directly in front of, or behind, the whale where regular interpulse intervals (IPIs) are found between successive pulses in the click. Most sperm whales, however, are recorded with the whale in an unknown orientation with respect to the hydrophone where the multipulse structure and the IPI do not conform to a regular pulse pattern. By combining far-field recordings of usual clicks with acoustic and orientation information measured by a tag on the clicking whale, we analyzed clicks from known aspects to the whale. We show that a geometric model based on the bent horn theory for sound production can explain the varying off-axis multipulse structure. Some of the sound energy that is reflected off the frontal sac radiates directly into the water creating an intermediate pulse p1/2 seen in off-axis recordings. The powerful p1 sonar pulse exits the front of the junk as predicted by the bent-horn model, showing that the junk of the sperm whale nasal complex is both anatomically and functionally homologous to the melon of smaller toothed whales. (c) 2005 Acoustical Society of America.",
author = "Zimmer, {W M X} and Madsen, {P T} and V Teloni and Johnson, {M P} and Tyack, {P L}",
year = "2005",
month = "11",
doi = "10.1121/1.2082707",
language = "English",
volume = "118",
pages = "3337--3345",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "5",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Off-axis effects on the multipulse structure of sperm whale usual clicks with implications for sound production

AU - Zimmer, W M X

AU - Madsen, P T

AU - Teloni, V

AU - Johnson, M P

AU - Tyack, P L

PY - 2005/11

Y1 - 2005/11

N2 - Sperm whales (Physeter macrocephalus) produce multipulsed clicks with their hypertrophied nasal complex. The currently accepted view of the sound generation process is based on the click structure measured directly in front of, or behind, the whale where regular interpulse intervals (IPIs) are found between successive pulses in the click. Most sperm whales, however, are recorded with the whale in an unknown orientation with respect to the hydrophone where the multipulse structure and the IPI do not conform to a regular pulse pattern. By combining far-field recordings of usual clicks with acoustic and orientation information measured by a tag on the clicking whale, we analyzed clicks from known aspects to the whale. We show that a geometric model based on the bent horn theory for sound production can explain the varying off-axis multipulse structure. Some of the sound energy that is reflected off the frontal sac radiates directly into the water creating an intermediate pulse p1/2 seen in off-axis recordings. The powerful p1 sonar pulse exits the front of the junk as predicted by the bent-horn model, showing that the junk of the sperm whale nasal complex is both anatomically and functionally homologous to the melon of smaller toothed whales. (c) 2005 Acoustical Society of America.

AB - Sperm whales (Physeter macrocephalus) produce multipulsed clicks with their hypertrophied nasal complex. The currently accepted view of the sound generation process is based on the click structure measured directly in front of, or behind, the whale where regular interpulse intervals (IPIs) are found between successive pulses in the click. Most sperm whales, however, are recorded with the whale in an unknown orientation with respect to the hydrophone where the multipulse structure and the IPI do not conform to a regular pulse pattern. By combining far-field recordings of usual clicks with acoustic and orientation information measured by a tag on the clicking whale, we analyzed clicks from known aspects to the whale. We show that a geometric model based on the bent horn theory for sound production can explain the varying off-axis multipulse structure. Some of the sound energy that is reflected off the frontal sac radiates directly into the water creating an intermediate pulse p1/2 seen in off-axis recordings. The powerful p1 sonar pulse exits the front of the junk as predicted by the bent-horn model, showing that the junk of the sperm whale nasal complex is both anatomically and functionally homologous to the melon of smaller toothed whales. (c) 2005 Acoustical Society of America.

U2 - 10.1121/1.2082707

DO - 10.1121/1.2082707

M3 - Article

VL - 118

SP - 3337

EP - 3345

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 5

ER -

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ID: 20035649

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