Until now, it was only possible to optimize an acoustic cloaking structure for the air environment. However, with this latest research, "Acoustic cloak designed by topology optimization for acoustic-elastic coupled systems," ...
General Physics
Mar 11, 2021
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8
An international team of scientists has succeeded in using the signature whistles of individual bottlenose dolphins to estimate the size of the population and track their movement.
Plants & Animals
Aug 27, 2020
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18
New research has found that bush-crickets' ear canals have evolved to work in the same way as mammals' ears to amplify sound and modulate sound pressure—and the findings could help scientists make better acoustic sensors ...
Plants & Animals
Feb 11, 2020
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5
Researchers have made a breakthrough in the control of terahertz quantum cascade lasers, which could lead to the transmission of data at the rate of 100 gigabits per second—around one thousand times quicker than a fast ...
Optics & Photonics
Feb 11, 2020
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945
Researchers have been eavesdropping on 'conversations' between calves and their mothers—measuring the process of how cows communicate using detailed acoustic analysis for the first time.
Plants & Animals
Dec 15, 2014
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0
For the first time, researchers have been able to show by acoustic analysis that whales—or at least one very special white whale—can imitate the voices of humans. That's a surprise, because whales typically produce sounds ...
Plants & Animals
Oct 22, 2012
13
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Research into the long calls of male Orangutans in Borneo has given scientists new insight into how these solitary apes communicate through dense jungle. An acoustic analysis of the calls, published today in Ethology, reveals ...
Plants & Animals
Mar 9, 2010
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0
Biologists have discovered that a species of Australian pigeon has a secret way of alerting fellow birds to predators -- a "whistle" emitted by flapping wings when the bird takes off in alarm.
Plants & Animals
Sep 1, 2009
1
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