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Sound

— Electronics

Mobile phones could be charged using sound

Four years ago, we first heard about how Korean scientists had proposed using sound to charge mobile phones. They explained that it could be done via a piezoelectric effect, in which zinc oxide nanowires converted sound-caused vibrations into electricity. At the time, the researchers couldn't generate enough of a current to actually charge a phone. Now, however, scientists from Nokia and Queen Mary University of London (QMUL) have succeeded in doing so. Read More
— Science

Acoustic bottle beams hold promise for acoustic imaging, cloaking and levitation

Using a technique that has possible applications in acoustic cloaking, sonic levitation, ultrasonic imaging, and particle manipulation, scientists at the University of California Berkeley claim to have produced a "bottle" beam of acoustic energy in open air that can precisely redirect sound waves. Able to bend these waves along set trajectories without the need for waveguides or other mechanical assistance, the bottle beam is also able to flow around objects in its path while maintaining its shape. Read More
— Good Thinking

Audio Engineer's Hoodie lets you stay warm and look cool

Have you ever faced the problem of wanting to wear both a hoodie and over-the ear-headphones at the same time? I'm guessing not, because it's not exactly a problem most people face most days. However, judging by the positive response to a garment of clothing designed to solve this problem, it seems there are people out there who have faced this dilemma ... and who haven't yet figured out that you can wear headphones underneath a hoodie. Read More
— Music

Dialtone claims first infinitely tone-adjustable guitar pickup

The “right” guitar tone is an elusive and personal thing, and many seasoned guitarists strive to achieve a particular tone that reflects their musical style or matches the genre in which they are playing. In response to this, Dialtone is set to launch its new guitar pickup aimed squarely at the musician who likes to adjust their sound on the fly. Claimed to be the world's first on-guitar version of an infinitely adjustable pickup, the Dialtone promises a lot of tone control without the need for further effects boxes or software control. Read More
— Electronics

Touch Board and electric ink create a jammin' music machine

In a world increasingly dominated by touchscreens, a London design studio is taking an approach to touch that's both low(er)-tech and innovative at the same time. Bare Conductive raised over US$200,000 on Kickstarter last year for an Arduino-based project called Touch Board that turns any conductive material into a potential capacitive touch input, including the firm's own conductive electric paint. Gizmag's Eric Mack was able to see the Touch Board in action and speak with co-founder Matt Johnson at the Bay Area Maker Faire. Read More
— 3D Printing

Disney researchers 3D print speakers in any shape imaginable

It's one thing to assemble a loudspeaker from 3D-printed components, but researchers at Disney have figured out a way to 3D print interactive loudspeakers in any shape imaginable, while also integrating speaker functionality into the whole object or just parts of it. Just envision 3D printing an entire loudspeaker in one step in the shape of Cinderella, and having sounds boom off her whole body or just her skirt. Read More
— Music

World’s first graphene speaker already superior to Sennheiser MX400

Graphene is frankly just showing off at this point. Not content with breezing in and smashing records in solar efficiency, kicking the butt of lithium-ion batteries, being the strongest known material in the Universe, being 1,000 times more light-sensitive than any known camera sensor and a thousand other achievements, now this smug supermaterial is having a crack at audio. How’s it going? Well, with basically zero acoustic development, a graphene loudspeaker is already boasting a better frequency response curve than a set of Sennheiser MX-400s. Read More
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