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Acoustics

"Dolphin speaker" could pave the way for human-cetacean communication

While there’s little doubt that dolphins are saying something to one another with all their clicks, squeals and whistles, we’re still not entirely sure just what it is that they’re communicating. We may be getting closer to figuring it out, however, as Japanese scientists have created an underwater speaker that’s capable of playing back the creatures’ entire acoustic range. The next step - see how they respond. Read More
— Inventors & Remarkable People

Acoustic wind pavilion makes music out of thin air

Aeolus, a fascinating acoustic wind sculpture made by prolific Bristol artist Luke Jerram, is as much a feast for the ears as it is for the eyes. Named after the mythical Greek ruler of the four winds and built in conjunction with the University of Southampton's Institute of Sound and Vibration Research and the University of Salford's Acoustics Research Center, the giant aeolian wind harp is intended to inspire the public to learn more about the amazing things that can happen when engineering, acoustics and aerodynamics are blended together. Read More
— Music

iBamboo speaker to get recycled plastic "Urban" companions

Anatoliy Omelchenko of Triangle Tree reports that since launching the iBamboo speaker we featured in June 2011, he has received numerous requests from customers asking if there's anything like it that's made from plastic. Despite being made from a material considered stronger than some plastics and metal, users seem worried that the beautifully simple iPhone amplification device may get damaged if made part of their regular travel kit. Enter the new iBamboo Urban design, which is shaped just like its natural elder but is made from recycled plastic. Read More
— Around The Home

WiSPr acoustic termite detector works by "hearing" termites eat

Thanks to their habit of remaining concealed, the first indication people get that termites have invaded their home is after they’ve already wreaked their particular brand of wood-eating havoc. According to Associate Professor Adam Osseiran of Western Australia’s Edith Cowan University, the yearly damage bill in the U.S. for termite damage tops US$12 billion, while in Australia they cause an estimated $1 to $3 billion damage each year. In attempt to reduce such damage, Osseiran and his team have developed an acoustic sensor that is so sensitive it can detect termite infestation by “hearing” them chew through timber. Read More
— Music

Highly resonant wood could be commercially produced for Stradivarius-quality "fungus violins"

Earlier this week, we brought you the story of a radiologist and two violin-makers, who used computed tomography (CT) imaging to create a copy of a 1704 Stradivarius violin. The instrument that they produced was almost an exact replica of the original, as far as the shape, thickness and volume of its wooden parts was concerned. As one of our readers pointed out, however, much of the tonal quality of Stradivari's instruments was likely due to the microstructure and resonance characteristics of the wood of which they were made, caused by the growing conditions at the time. Well, it turns out that someone is working on reproducing that aspect of the violins, too. Read More
— Music Feature

Ministar travel guitars - it's all in the neck

Guitarists who travel a lot and want to take an instrument along for the ride - but don't want to risk damaging that prized vintage Strat - might find themselves turning in the direction of a scaled down stand-in. Such solutions come in many different shapes and sizes - from full size instruments with parts that collapse (like Daniel Mapp's Jetson travel guitar concept) to models with a shortened neck and small bodies (such as Martin's Backpacker) to strange-looking beasts with tuners positioned in a hollowed out section of the body (like the Traveler's Speedster). Bob Wiley's Ministar guitars, though, are essentially a bunch of necks with pickups. While there is a model with a shortened 19-inch scale neck, most of the odd-looking electric, acoustic and bass guitars sport full length necks and, says Wiley, play and sound just like the big brand models, but at a fraction of the price - and a fraction of the size. Read More
— Music

Laser "sound visualizer" may lead to better loudspeakers

We've been following the quest for the world's best speakers for some time but remarkably, there's still room for improvement. A key issue that plagues proper sound reproduction (and thus its perceived quality) is a phenomenon known as deconstructive interference. This occurs when audio signals overlap and cancel one another out, creating dead spots which, until recently, have been very difficult to track. Now, a team from Britain's National Physical Laboratory (NPL) has figured out a clever way to make speaker sound "visible" - and they do it with laser light. Read More
— Around The Home

Acoustic Alarm clock replaces buzzer with strings

We’ve heard about alarm clocks that jolt you awake with 113 decibels of sound while shaking your bed, that won’t stop ringing until you’ve done your exercises, or that you have to chase across the room. If you want to be woken in a more civilized, serene fashion, however, you might like the Acoustic Alarm – should it ever become commercially available, that is. Instead of an annoying beep, buzz or radio DJ, the one-off design exercise uses a motorized pic to strum four guitar strings, in order to gently rouse its user. Read More
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