File:Ak52_10x.ogg
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Ak52_10x.ogg (Ogg Vorbis sound file, length 15 s, 11 kbps, file size: 20 KB)
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This sound clip appeared on Wikipedia's Main Page in the Did you know? column on 30 September 2012 (see archives). |
Summary
DescriptionAk52 10x.ogg |
English: 52 Hz "whale-like" signals were first reported by Watkins et al.(2000). On average these tones had a center frequency of 51.75 Hz and lasted 5-7 sec. These tones are usually produced in groups of 2-6 and were recorded in the NE Pacific. The recorded signal has been sped up 10 times in order to move the sound into the audible range. |
Date | |
Source | http://www.pmel.noaa.gov/vents/acoustics/whales/sounds/sounds_52blue.html |
Author | NOAA |
Licensing
Public domainPublic domainfalsefalse |
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
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Items portrayed in this file
depicts
17 September 2012
application/ogg
7ac532197333e649378bde3161b5e7be35aebddd
20,788 byte
15.367 second
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:51, 17 September 2012 | 15 s (20 KB) | Braincricket | User created page with UploadWizard |
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Short title | 52 Hz sound |
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Author | NOAA |
Software used | Xiph.Org libVorbis I 20070622 |