News tagged with acoustic signal
In future, phones can identify the Troubadour on the tree top
In spring, the sound of birds serenading fills the air. The Department of Signal Processing and Acoustics is developing a system that can recognize a bird species based on a song segment. The system can be ...
May 22, 2012 |
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Ship noise boosts stress in whales, 9/11 reveals: study
The steady drone of motors along busy commercial shipping lanes not only alters whale behaviour but can affect the giant sea mammals physically by causing chronic stress, a study published Wednesday has reported ...
Feb 08, 2012 |
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Rap music powers rhythmic action of medical sensor
(PhysOrg.com) -- The driving bass rhythm of rap music can be harnessed to power a new type of miniature medical sensor designed to be implanted in the body.
Jan 26, 2012 |
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Scientists develop new technology to detect deep sea gas leaks
A new ultra-sensitive technology which can monitor leaks from underwater gas pipelines has been developed by scientists at the University of Southampton.
Oct 12, 2011 |
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Rainforest plant developed sonar dish to attract pollinating bats
The researchers discovered that a rainforest vine, pollinated by bats, has evolved dish-shaped leaves with such conspicuous echoes that nectar-feeding bats can find its flowers twice as fast by echolocation. The study is ...
Jul 28, 2011 |
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NPL unveils quantitative means of monitoring ultrasonic cleaning systems
Ultrasonic Cleaning Systems are widely used in healthcare applications during the sterilization of surgical instruments, and in many manufacturing and process industries. They work by passing a high frequency ...
Aug 11, 2010 |
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Sensor predicts glass breakage
(PhysOrg.com) -- Modern glass façades inform the architecture of major cities throughout the world. In recent years, however, there have been cases of broken glass, with collapsing facades endangering passers-by. ...
May 04, 2010 |
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Safely anchored at sea
(PhysOrg.com) -- Different layers of the seabed reflect sound waves in a specific way. German researchers are harnessing the benefits of this fact to efficiently track down suitable offshore sites for wind ...
Space & Earth / Earth Sciences
May 04, 2010 |
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Caltech researchers create 'sound bullets'
Taking inspiration from a popular executive toy ("Newton's cradle"), researchers at the California Institute of Technology have built a device -- called a nonlinear acoustic lens -- that produces highly focused, high-amp ...
Apr 21, 2010 |
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Research reveals that temporary hearing deprivation can lead to 'lazy ear'
Hearing scientist Daniel Polley, Ph.D., an investigator at Massachusetts Eye and Ear Infirmary's Eaton-Peabody Laboratories of Auditory Physiology, has gained new insight into why a relatively short-term hearing deprivation ...
Medicine & Health / Neuroscience
Mar 10, 2010 |
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From crickets to whales, animal calls have something in common
(PhysOrg.com) -- Scientists who compare insect chirps with ape calls may look like they are mixing aphids and orangutans, but researchers have found common denominators in the calls of hundreds of species of insects, birds, ...
Jan 05, 2010 |
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Lasers generate underwater sound
Scientists at the Naval Research Laboratory (NRL) are developing a new technology for use in underwater acoustics. The new technology uses flashes of laser light to remotely create underwater sound. The new ...
Sep 04, 2009 |
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When a whistle beats a tweet
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.
Sep 01, 2009 |
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I'm forever imploding bubbles
The National Physical Laboratory (NPL) has developed the first sensor capable of measuring localized ultrasonic cavitation - the implosion of bubbles in a liquid when a high frequency sound wave is applied. The sensor will ...
Apr 07, 2009 |
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Researchers Develop Flow Sensors Based on Blind Fish Hair Structures
(PhysOrg.com) -- A blind fish that has evolved a unique technique for sensing motion may inspire a new generation of sensors that perform better than current active sonar.
Mar 24, 2009 |
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