2020-05-14

[public] 673K views, 22.0K likes, dislikes audio only

MinuteEarth

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Sounds that animals make can be really different, and it turns out that there's a reason why some species communicate with certain sounds.

Thanks also to our Patreon patrons https://www.patreon.com/MinuteEarth and our YouTube members.

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To learn more, start your googling with these keywords:

frequency - how often a wave occurs in a certain unit of time

Hertz - a unit of frequency (Hz), the number of waves that occus in a second

pitch - a perceptual property of sounds that allows their ordering on a frequency-related scale

echolocation - the location of objects by reflected sound

refraction - the change in direction of a wave

diffraction - the bending of waves around obstacles and the spreading out of waves beyond openings

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Credits (and Twitter handles):

Video Writer, Director, and Narrator: Kate Yoshida (@KateYoshida)

Video Illustrator: Arcadi Garcia Rius (@garirius)

With Contributions From: Henry Reich, Alex Reich, Ever Salazar, Peter Reich, David Goldenberg, Julián Gómez, Sarah Berman

Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder

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Image and sound credits:

Cope's gray treefrog call

Credit: U.S. Geological Survey

Department of the Interior/USGS

Google Earth photos

Credit: Google, Maxar Technologies, Landsat/Copernicus

Bottlenose dolphin whistles

Credit: Centro Inderdisciplinare di Bioacustica e Richerche Ambientali, Università degli Studi di Pavia

http://www-3.unipv.it/cibra/edu_dolphins_uk.html

Humpback whale call

Credit: NOAA and Northeast Passive Acoustics Research Group

Koala call

Credit: FreeSoundEffects.com

Wolf howl sound - OrangeFreeSounds user Alexander

http://www.orangefreesounds.com/wolf-howl-sound/

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References:

Arch, V. A. and P. M. Narins. 2008. “Silent” signals: selective forces acting on ultrasonic communication systems in terrestrial vertebrates. Animal Behaviour 76: 1423–1428. https://www.mn.uio.no/cees/english/research/news/events/research/journal-clubs/eef/2008/silent-signals.html

Bedard Jr. and T. M. Georges. 2000. Atmospheric Infrasound, Physics Today, 53(3): 32-37. https://psl.noaa.gov/programs/infrasound/atmospheric_infrasound.pdf

Ladich F. and H. Winkler. 2017. Acoustic communication in terrestrial and aquatic vertebrates,” Journal of Experimental Biology 220: 2306–2317. https://jeb.biologists.org/content/jexbio/220/13/2306.full.pdf

Michelsen, A. and O.N. Larsen. 1983. Strategies for acoustic communication in complex environments. In: Neuroethology and Behavioural Physiology (ed Huber, F. and Markl, H.) pp. 321-331 Berlin: Springer-Verlag. https://link.springer.com/chapter/10.1007/978-3-642-69271-0_23

Narins, P.M., A.S. Stoeger, and C. O'Connell-Rodwell. 2016. Infrasonic and seismic communication in the vertebrates with special emphasis on the Afrotheria: An update and future directions. In Vertebrate Sound Production and Acoustic Communication (ed. R. A. Suthers, W. T. Fitch, R. R. Fay and A. N. Popper), pp. 191-227. Cham: Springer. https://link.springer.com/chapter/10.1007/978-3-319-27721-9_7