MIT’s piezoelectric fibers can act as speaker or microphone, don’t mind auto-tune

Piezoelectric materials work quite simply, in theory — motion in, electricity out, or vice versa — and since that’s just how speakers and microphones transmit their sound, it’s not much of a stretch to imagine someone would figure out audio on a micron scale. That someone is MIT’s Yoel Fink, who’s reportedly engineered a marvelous process for producing fibers that can detect and emit sound. Following up their famous work on flexible cameras, Fink’s team discovered they could keep piezoelectric strands rigid enough to produce audible vibrations by inserting graphite, AKA pencil lead. Better yet, the lab process can apparently make the threads on a fairly large scale, “yielding tens of metres of piezoelectric fibre” at a single draw. The potential for fabric made from such fibers is fantastic, of course — especially combined with this particular scientist’s previous research into camera cloth.

MIT’s piezoelectric fibers can act as speaker or microphone, don’t mind auto-tune originally appeared on Engadget on Tue, 13 Jul 2010 07:27:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceMIT News, Nature Materials  | Email this | Comments

Report: MIT Acoustic Fibers Can Hear and Produce Sound

MIT-acoustic-fibers-1.jpg

A team at the Massachusetts Institute of Technology’s Research Lab of Electronics has discovered a method of creating fibers that can detect and produce sound. Though I’m sure you’re thinking of possible applications already (a tie that records your conversations? Pajamas that sing you to sleep?), MIT suggests such things as “clothes that are themselves sensitive microphones, for capturing speech or monitoring bodily functions, and tiny filaments that could measure blood flow in capillaries or pressure in the brain.” OK, that’s more useful and serious.

Ordinary man-made optical fibers are made of one material that is heated and drawn out, but for these acoustic fibers, MIT’s team needed specific elements to remain intact in this process. Using a certain kind of plastic and adjusting its fluorine content, they kept the pertinent molecules lined up correctly, making them piezoelectric. They also used a conducting plastic with a high graphite content, which helps the fibers keep their shape and makes them of a regular thickness. Electricity is then applied to line up the molecules correctly, and voila! Fiber that can hear and make sounds.

Noémie Chocat, a graduate student in the materials science department, says: “If you connected them to a power supply and applied a sinusoidal current” (an alternating current whose period is very regular) “then it would vibrate. And if you make it vibrate at audible frequencies and put it close to your ear, you could actually hear different notes or sounds coming out of it.”

The team is announcing the achievement with much more detail in the August issue of Nature Materials.

Photo credit: Research Laboratory of Electronics at MIT/Greg Hren Photograph

Onkyo’s HT-S7300 and HT-S6300 HTIB bundles are totally ready for 3D, man

Shocker of shockers — Onkyo has outed a pair of home-theater-in-box bundles, and both of ’em are 3D ready. Crazy, ain’t it? The HT-S6300 and HT-S7300 both have 3D-ready HDMI-1.4a inputs, 1080p video upscaling, lossless Dolby and DTS high definition audio, Dolby height processing, Audyssey automatic room equalization and seven total loudspeakers (plus a subwoofer). The primary difference between the two is the pair of 41-inch tall floorstanders that come with the S7300, as both systems ship with a 7 x 130W amplifier and a 290W subbie. As expected, there’s also an outboard dock for iPod and iPhone, and the Faroudja DCDi Cinema processor should keep upscaled content looking its very best. The duo is available now for $749 and $899, respectively, and the full presser awaits just past the break should you find yourself interested.

Continue reading Onkyo’s HT-S7300 and HT-S6300 HTIB bundles are totally ready for 3D, man

Onkyo’s HT-S7300 and HT-S6300 HTIB bundles are totally ready for 3D, man originally appeared on Engadget on Sun, 11 Jul 2010 10:32:00 EDT. Please see our terms for use of feeds.

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New Xbox 360 gets a proper teardown analysis: power and noise reductions confirmed

Anyone can take a hammer and rib-spreader to a new piece of hardware. But it takes someone like Anand Shimpi, the man behind Anandtech who has personally suffered through four out-of-warranty Xbox 360 failures, to bring sage analysis to a teardown of the new Xbox 360. His reluctant sixth Xbox 360 is the new slimster (codename Valhalla) which, for the first time, combines the CPU, GPU, and eDRAM onto a single chip — previous Xbox 360 motherboards featured two discrete packages that split the CPU from the ATI designed Xenos GPU and eDRAM. The design allows for a single heatsink to be cooled by a single, larger fan making the new Xbox “noticeably quieter,” measured at 45dB when idle or 51dB with the 1.5Gbps SATA Hitachi HTS545025B9SA00 with 8MB buffer spinning at 5400RPM — that’s down from 50dB and 54dB, respectively, as measured on late 2008 through 2010 Jasper-class 360s. Regarding power consumption, Anand measured a 50% reduction from the original 2005 Xbox 360 (25% less than Jasper-class rigs at idle, or 20% to 17% less under load) and pulled just 0.6W when “totally off” compared to the 2W of vampire power pulled by older 360s. Anand speculates that Microsoft might finally be using cheaper 40nm components. However, we shouldn’t expect to see a price cut anytime soon as it will take Microsoft awhile to ramp up the material and manufacturing cost savings. Regardless, with Kinect and several new game titles on the horizon, Anand concludes that there’s still plenty of life left in the old Xbox 360 platform for those looking to make the jump.

New Xbox 360 gets a proper teardown analysis: power and noise reductions confirmed originally appeared on Engadget on Fri, 18 Jun 2010 05:10:00 EDT. Please see our terms for use of feeds.

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JBL ships MS-8 digital processor, promises to ‘revolutionize’ car audio

Remember that JBL MS-8 you plopped atop your must-have list back in March? No? Fret not, as quite a bit has happened in the meantime. Today, however, the aforesaid outfit is shipping its new in-car digital processor, which remains a bit of a mystery device that magically improves audio quality for up to four seating positions simultaneously. JBL assures us that the real secret sauce lies in the software, and with it, people will apparently “never experience music in their vehicle the same way again.” This all sounds a bit Bose-ish to us, but at least we’re told the specifications: the box includes an onboard 20W x 8 amplifier, eight-channel preamp-level and speaker-level inputs and outputs, and full-range stereo auxiliary input. The package also includes a wireless RF remote, LCD display (with a five-line, 128 x 64-pixel screen), Logic 7 technology and a graphic equalizer with 31 bands. The actual installation process also remains a mystery — all we’re told is that a pro could do it during the time it’d take you to have lunch, but given that this thing isn’t wireless, you can bet that a good bit of splicing will be in order. Head on past the break for a look at what $799 nets you.

Continue reading JBL ships MS-8 digital processor, promises to ‘revolutionize’ car audio

JBL ships MS-8 digital processor, promises to ‘revolutionize’ car audio originally appeared on Engadget on Wed, 16 Jun 2010 00:34:00 EDT. Please see our terms for use of feeds.

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Washington establishing timeline for sales of ‘loud’ EVs

Whenever we test drive an EV, we try to bring along a passenger who screams things out the window like “Beware! Silent car!” and “Electric vehicle! Don’t get hit!” But we understand that for some of you this might not be an option. Luckily, it looks like initiatives to outfit electric vehicles with warning sounds have been picking up steam, from the Pedestrian Safety Act last year to a new bill that would have the National Highway Transportation Safety Administration establish a three year timeline for auto manufacturers. According to Autoblog, “there’s no word as to how loud the noise would be or what it will sound like,” although drivers would not be able to turn it off, and it would likely be variable, depending on your speed — not unlike the system Brabus uses in its Smart High Voltage EV. As for your car-lovin’ Engadget editors, we’re already looking for one that emulates the growl of the ’68 Ford Mustang that Steve McQueen drove in Bullitt.

Washington establishing timeline for sales of ‘loud’ EVs originally appeared on Engadget on Thu, 20 May 2010 15:19:00 EDT. Please see our terms for use of feeds.

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LinnStrument multitouch music maker gets demoed on video, grasps for investors

Roger Linn. Ever heard of him? He’s only the man behind the modern day drum machine and the original MPC-60, and he’s also the man behind the concept you’re inevitably peering at above. For now, Roger’s calling this beaut the LinnStrument, and there’s quite a back story to go along with it. The design began way back in 2006, with the goal being to create a full-on multitouch instrument with the ability to let one’s finger dictate volume, timbre, pitch and pressure. No doubt, many have tried to concoct something similar, but Roger’s discovery of TouchCo enabled him to create one sans the limitations of imitators. Unfortunately, Amazon quietly scooped up the startup in January of this year (to have this sort of technology available for the Kindle product line), and in turn, shut down TouchCo’s involvement with the outside world. Now, Roger’s being forced to reveal his unfinished work in hopes of attracting investors or unearthing another company that could mimic this sort of awesomeness en masse. Jump on past the break and mash play to get a better idea of what the world’s missing out on, and be sure to tell Jeff Bezos “thanks” the next time you bump into him.

[Thanks, Peter]

Continue reading LinnStrument multitouch music maker gets demoed on video, grasps for investors

LinnStrument multitouch music maker gets demoed on video, grasps for investors originally appeared on Engadget on Sun, 16 May 2010 11:17:00 EST. Please see our terms for use of feeds.

Permalink Create Digital Music  |  sourceRoger Linn Design  | Email this | Comments

Sony Qlasp earbuds wrap around your lobes, appeal to your sweet tooth

Sony’s candy-colored PIIQ headphone lineup isn’t for everyone, but at least the new lollypop-styled Qlasp earbuds have a useful feature: an integrated flexible clip designed to keep them firmly affixed to your head as you skate, swing and slide through your active hipster day. Sure, you could just slap a pair of Lobies on your Klipsch and get the same effect with better sound, but at the cost of uglification; for a mere $25, these low-end Sony units might get the job done without telegraphing your geekiness to the world. Taste all five flavors of Qlasp at the source link.

Sony Qlasp earbuds wrap around your lobes, appeal to your sweet tooth originally appeared on Engadget on Tue, 04 May 2010 06:14:00 EST. Please see our terms for use of feeds.

Permalink MP3 Insider (CNET)  |  sourceSonyStyle (1), SonyStyle (2)  | Email this | Comments

Jays aims for long-term comfort with stylish t-Jays earbuds

We heard that Jays was gearing up to ship a baker’s half-dozen of new headphones this year, and we’ve got to say — the t-Jays ain’t a bad way to get things rolling. Designed with a “warm and wide soundstage,” these ‘buds boast an angled sound chamber optimized for delivering deep bass, and Jays proclaims that these might be the best earphones yet for extended listening sessions. They can be worn over the ear or straight in, and the cord has been designed to sit closer to the body in order to reduce burden placed on the ear. As with some of the outfit’s other offerings, these too will ship in One, Two or Three flavors — each will boast the same speaker size, but the frequency response and amount of bundled extras increases with each level. They’ll be lookin’ to take on Sleek Audio’s SA1 and Klipsch’s Image S4 when they land in May for $79, $89 and $99 in order of mention.

[Thanks, Tommy]

Continue reading Jays aims for long-term comfort with stylish t-Jays earbuds

Jays aims for long-term comfort with stylish t-Jays earbuds originally appeared on Engadget on Thu, 15 Apr 2010 14:54:00 EST. Please see our terms for use of feeds.

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SweetSpotter keeps your music coming at the right angle, regardless of flailing

For years now, home theater and / or entertainment rigs have been built so that your sofa, recliner or aged bar stool was right in the sweet spot when it came to audio distribution. In short, you built your system around your seating arrangement. With the introduction of Nintendo’s Wii, Sony’s PlayStation Move and Microsoft’s Project Natal, folks aren’t staying put in the same place as often, and that — friends — has created a problem in search of a solution. The fine gurus over at TU Dresden believe that they have the answer, and even if it fails miserably (highly doubtful, mind you), who could really harsh on a product called the SweetSpotter? The software is designed to work in conjunction with your webcam (or console camera, in theory), and as the sensor tracks your movement in real time, the code “adaptively adjusts the sweet spot of your stereo play back system to your current listening position.” In short, it results in “correct stereo phantom source localization independent of your listening position,” and frankly, it just might change your life. The code itself can be downloaded for free down in the source link (it’s open source, so pass it along while you’re at it), and if you end up creating a plug-in to use this in your favorite gaming scenario, be sure to drop us a line about it.

SweetSpotter keeps your music coming at the right angle, regardless of flailing originally appeared on Engadget on Fri, 26 Mar 2010 00:34:00 EST. Please see our terms for use of feeds.

Permalink   |  sourceSweetSpotter  | Email this | Comments