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Acoustic in Biological News

Technology improves salmon passage at hydropower dams

... SPOKANE, Wash. - acoustic tags and numerical river models are two ... Spokane Convention Center in Spokane, Wash. acoustic tags measure survival rates An average of 76 ... with a tag that's part of the Juvenile Salmon acoustic Telemetry System (JSATS). The JSATS-tagged fish ...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

... 7) SUPPLE WAVES IN CHEESE AND SKIN When acoustic waves propagate through a given material, the ... of soft solids by using surface or bulk acoustic waves. This allows them to characterize the ... they release tiny shock waves, a phenomena called acoustic cavitation. Over tens of thousands of pulses, the ...

NPL Cavimeter receives 2009 UIA Outstanding Product Award

... by NPL Strategic Research funding in 1997. acoustic cavitation is the inception, growth and eventual ... of micron-sized bubbles in response to an applied acoustic field, and is harnessed in applications as ... provides users with real-time indication of acoustic cavitation. Sensor and Cavimeter were trialled by ...

DEIMOS joins MARS and its satellite of instruments on seafloor

... DEIMOS. This DEIMOS, however, is an underwater acoustic package designed to monitor movements of fish and ... uses an echo sounder to transmit and receive an acoustic signal used to reveal what's in a narrow cone of ... security, Horne says. DEIMOS emits an acoustic signal that spreads out in a cone shape from the ...

Musicians have biological advantage in identifying emotion in sound

... can mean very different things depending on the acoustic properties of the sound. The Northwestern researchers measured brainstem processing of three acoustic correlates (pitch, timing and timbre) in ... The authors of the study also note that the acoustic elements that musicians process more efficiently ...

A BBVA Foundation project comes up with a system enabling detection of cetacean hearing loss

... their auditory channels translate into accurate acoustic images. At the same time, by measuring the ear's ... an individual's auditory system and thereby its acoustic ability to negotiate its habitat. The ... eighty cetacean species, every one with a rich acoustic repertoire - complicates the task of extracting ...

Acoustical Meeting, Nov. 10-14, 2008 in Miami, Florida

... this new understanding to begin correcting other acoustic factors that contribute to the poor quality and ... help users go wireless by automatically setting acoustic modems for maximum speed. Many applications, such ... for staying connected would be to send acoustic signals through the water, in the same way that ...

Salmon smolt survival similar in Columbia and Fraser rivers

... the rivers. And though the study using both acoustic and transponder tags found that the average ... In 2000, OSU introduced the use of a new tool acoustic telemetry for studying salmon on the West Coast. acoustic telemetry allows the signals emitted from tagged ...

Scientists achieve first tracking of salmon from headwaters in Rockies through Pacific to Alaska

... were followed via an extensive network of POST acoustic receivers in the Columbia and Fraser Rivers and ... leads on those questions, the electronic and acoustic technology has demonstrated itself as a useful ... services for independent researchers working with acoustic tags. For example, in Puget Sound, Washington, ...

156th Acoustical Society of America Meeting, Nov. 10-14, 2008 in Miami

... study of how these animals locate food with short acoustic bursts whose frequency goes up as the predator ... market, which recreates the natural wood floor acoustic experience, the floor will offer additional value ... ENGLISH, GERMAN, HINDI, AND ARABIC "Overall, the acoustic measures demonstrated many similarities among ...

NJIT professor's research suggests changes in underwater data communications

... group. Underwater communication systems use acoustic pressure channels. Abdi's invention differs from existing systems because his uses acoustic particle velocity channels for data ... With a nominal speed of 1500 meters per second, acoustic waves propagate faster in water, when compared to ...

Whale songs are heard for the first time around New York City waters

... in our back yards." "With data generated by acoustic monitoring, we can better understand New York's ... the study will characterize New York waters' acoustic environment and examine whether underwater ... off Maine, New Hampshire and Massachusetts. acoustic monitoring has begun for the whales' southern ...

NSF awards two grants to Stevens for nano/micro device fabrication and nano sensor development

... grant of $230,900 for his work, " Nano AFCs acoustic Emission Sensors for Real-time Monitoring of ... to apply innovative nanotechnologies for creating acoustic emission (AE) sensors for real-time monitoring of ... nanofibers. This work will result in advanced acoustic emission sensors with high sensitivity, excellent ...

Signals from the Atlantic salmon highway

... are difficult to determine in the ocean. Small acoustic tags and associated technology may provide some ... the Penobscot River to reach Halifax." The acoustic transmitters or tags, which are about the size of ... NEFSC maintains a network of more than 80 acoustic receivers that extend from Brewer, on the ...

Killer whales, blind bats, discriminating dolphins, mating birds

... the Blind 9) Taking Aural Cues from Flipper 10) acoustic Techniques for Monitoring Bird Migration 11) ... whales can regularly be detected using passive acoustic monitoring of their echolocation clicks. The ... wildlife, how flexible a species is in terms of acoustic adaptation could determine which birds will ...

Deep-sea sharks wired for sound

... from Oceans National Research Flagship fitted acoustic tags to 50 gulper sharks, swellsharks and green ... for the next three years by a network of 24 acoustic listening stations moored 100 metres off the ... detected a flurry of activity, receiving 5700 acoustic pings in five days from 42 of the sharks moving ...

Acoustics World Wide press room now open

... acoustic DETECTION OF LAND MINES An alternative acoustic method for detecting nonmetal land mines is based ... Harder tissues produce a significantly different acoustic field than softer tissues, and a novel, ...

MIT: Using touch to help deaf people

... held in the user's hand or worn around the back of the neck, but once the acoustic processing software is developed, it could be easily incorporated into ... for decades, but the MIT team hopes to improve the devices by refining the acoustic signal processing systems to provide tactile cues that are tailored to ...

AGU journal highlights: Nov. 11, 2008

... and period longer than about 1 second) have long been known to excite acoustic waves at twice their frequency that can travel with little attenuation to ... surface tension becomes an important force. They claim to have seen the acoustic waves excited by such tiny ripples in deep-sea pressure recordings ...

The 156th Acoustical Society of America Meeting, Nov. 10-14, Miami, Fla.

... "This talk defines and describes the entire class of materials, called acoustic metafluids, that can cause acoustic cloaking." http://www.acoustics.org/press/156th/norris.html . WHALE ...

Ultrasound shown to exert remote control of brain circuits

... nondestructive materials testing, sonar, communications, oceanography and acoustic mapping. "Studies of ultrasound and its interactions with biological ... ultrasound noninvasively in the brain has been the skull. However, the acoustic frequencies utilized by Tyler and his colleagues to construct their pulsed ...

Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions

... monitored their journey from freshwater into the ocean via a large-scale acoustic telemetry system called the Pacific Ocean Shelf Tracking (POST) array. ... larger, unsuspected role in salmon survival." Only in recent years have acoustic tags become small enough for scientists to implant them into juvenile ...

Research around the North Pole

... Dr. Rdiger Stein, geologist at the Alfred Wegener Institute. Additional acoustic (seismic) data show that the East-Siberian Shelf was covered with ice over ... of the Arctic Ocean during the last 90 million years. Seismic, an acoustic measurement method, allows peeking into the deep layers under the ocean ...

Researchers study acoustic communication in deep-sea fish

... journal, Biology Letters, may help researchers gain further insight into acoustic communication in the deep sea and the role of sound in fish behavior. ... a species found in the Atlantic Ocean. "Little is known about acoustic communication in the deep sea because of the difficulties of observing ...

OSU technologies funded for development

... The lightweight, load bearing composites will be able to absorb acoustic noise and vibration and provide protection from blast loading. Currently, ... prepare demonstration panels and generate basis data on the mechanical and acoustic properties. ...

OCAST funds OSU projects with commercial viability

... highly porous material that provides excellent thermal and acoustic insulation, Lu said. Chemically, however, aerogels are weakly connected, ... are a stronger, more ductile material with high levels of thermal and acoustic insulation. Yu Mao, professor in biosystems and agricultural ...

New whale detection buoys will help ships take the right way through marine habitat

... waters. Building on advances in ocean mooring design, underwater acoustic systems, and telecommunications, the team built and installed ten ... sounds to detect possible right whale calls. Every 20 minutes, these acoustic detections are sent by cellular or satellite phone to a server at Clarks ...

Researchers to develop ocean sanctuary 'noise budget' to evaluate potential impact on marine mammals

... is a first step toward a much larger goal of establishing a global passive acoustic monitoring network to measure ambient noise levels in a variety of ... period in a relatively large area in an effort to characterize the marine acoustic environment and the health of an urbanized, highly productive ecosystem. ...

Unveiling the underwater ways of the white shark

... surface of the oceans than ever before. Satellite tracking systems and acoustic sensors are giving researchers insights into the behavior and lifestyles ... location data when the sharks are on the high seas. The other tags are acoustic tags; sensors installed along the California coast pick up the signal ...

Marine scientists warn human safety, prosperity depend on better ocean observing system

... spend 10 months at sea and dive up to 1.5 km below the ocean surface. acoustic tags deployed by another CoML project, POST (Pacific Ocean Salmon ... better strategies for sustainable fisheries. Over 12,000 POST-coded acoustic tags have been released over the POST array, resulting in more than 4 ...

Human safety, prosperity depend on better ocean observing system: Scientists

... spend 10 months at sea and dive up to 1.5 km below the ocean surface. acoustic tags deployed by another CoML project, POST (Pacific Ocean Salmon ... better strategies for sustainable fisheries. Over 12,000 POST-coded acoustic tags have been released over the POST array, resulting in more than 4 ...

Monkeys use 'baby talk' to interact with infants

... Professor in Comparative Human Development at the University. The acoustic structure of particular monkey vocalizations called girneys may be ... to attract young infants and engage their attention, similar to how the acoustic structure of human motherese, or baby talk, allows adults to visually or ...

August 2009 Geology and GSA Today media highlights

... faults," yet it has been notoriously difficult to test. Tobin and Saffer have detected such pressurized fluids and quantified their extent, using acoustic images of a plate boundary fault system from a subduction zone under the Pacific Ocean offshore Japan. Their results show that the strength of the ...

Jet-propelled imaging for an ultrafast light source

... stuck. The frequency at which the droplets emerge can be controlled by an oscillator the researchers call an "acoustic trigger." Tuning the acoustic trigger adjusts the frequency so that each droplet containing a protein or virus meets an incoming pulse of x-rays. The entire device which the ...

Noise pollution negatively affects woodland bird communities, says CU-Boulder study

... less than 3 percent on the quiet sites, said Francis. Francis said house finches and black-chinned hummingbirds produce vocalizations at higher acoustic frequencies than those generated by compressors, which may allow them to communicate above the "industrial rumble" and subsequently nest there, he ...

The sound of light: Innovative technology shatters the barriers of modern light microscopy

... ultrasound microphone. The real power of the technique, however, lies in specially developed mathematical formulas used to analyze the resulting acoustic patterns. An attached computer uses these formulas to evaluate and interpret the specific distortions caused by scales, muscles, bones and internal ...

'Honey bee health' of concern at Western Apicultural Society conference

... State Honey Bee Health Program: Breeding, Diagnostics and Insecticide Tolerance." "Jerry's likely to describe and display his hand-held, acoustic monitoring device that 'listens' to the health of a honey bee colony," Mussen said On Wednesday morning, Aug. 19, participants have a choice of ...

A bad performance is better than no performance at all

... The learning of birdsong resembles the learning of speech in humans. Crucial for the process are acoustic perception and the ability to produce sound. Social isolation leads to a disturbed vocal development both in humans and in birds. When children grow ...

Triage technology with a Star Trek twist

... twenty paces. The magic behind SPTT is a technology known as Laser Doppler Vibrometry, which has been used in aircraft and automotive components, acoustic speakers, radar technology, and landmine detection. When connected to a camera, the vibrometer can measure the velocity and displacement of ...

Dolphins maintain round-the-clock visual vigilance

... unrelenting auditory vigilance tired them and took a toll on the animals' other senses? Ridgway and his team set about testing two dolphins' acoustic and visual vigilance over a 5 day period to find out how well they functioned after days without a break. The team publish their results on May 1 ...
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