noise cancellation
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Video: simulated 'quiet zone' cloaking hides an object in 2-D
You don't have to be able to pick a Romulan out of a crowd of Vulcans to be intrigued by the idea of cloaking, and indeed many non-trekkers have tried to hide things in plain sight using electromagnetism, acoustic superlenses, or light-bending materials. The latest attempt relies on devices that emit cancelling waves of the sort anyone who's ever seen a Bose commercial should quite familiar with, combining to negate any external, incoming waves. What's different here is that they also recombine on the other side of the object being cloaked, as shown in the video below, meaning that incoming surge is then re-generated and continues on undisturbed -- potentially even reflecting back through the object again should it hit something on the far side. It's part of research at the University of Utah and, for now, only works in a theoretical two-dimensional world where triangles and squares are ruled by pentagons, hexagons, and priestly polygons. Optical camouflage is sadly not believed to be possible using this technique, but sonar and radar are likely implementations, as well as mechanisms to subvert earthquakes, tsunamis, and maybe even neighboring speed metal fans.
Tim Stevens08.17.2009
Nokia's world-beating BH-905 Bluetooth cans slip into the photo booth
Nokia's BH-905 made some serious waves when it debuted back in early June, but what else would you expect from a product that calls itself "the best headset ever made?" The Bluetooth-equipped cans, along with its ten microphones, supple ear cups and A2DP / AVCRP support, are expected to launch globally next month for around three hundred bones, and the fine folks over at NokNok have already managed to score a pre-release model. Aside from visibly gushing all over themselves, they also note that the cans are far smaller than the original press shots made them seem, giving cautious travelers reason to breath a sigh of relief. Hit the read link for a luxurious hands-on look.
Darren Murph08.17.2009
Creative's Fatal1ty Professional Series Gaming Headset MkII hands-on, and news of its sequel
Cans are so hot right now; the bigger and gaudier the better, because nothing says "Don't talk to me" like giant domes covering your ears. Creative's latest set, Fatal1ty Professional Series Gaming Headset MkII, don't really have much to offer in the flash category and certainly aren't excessively sized, but for serious gamers they seem to be a solid option and just the thing to keep your mom from interrupting your session. Shipping next week for $99, they offer an over-ear design with memory-foam surrounds and a sophisticated but not particularly flashy look that says "I want to look cool while wearing these, but I'll leave the chrome to my CPU fan, thanks." They sport a detachable boom that has not one but two microphones in it and some apparently fancy-schmantsy processing that can discern your howl of war from your dog's howl of neglect, meaning your CS teammates hear only the former. Unfortunately we weren't able to try that out for ourselves, so we'll have to see how well that pans out in the real world. The set uses the standard jumble of 3.5mm audio jacks to connect to your machine, but a Creative rep was kind enough to disclose plans for a USB version that'll work sans-soundcard. That model is due sometime next month for a $30 premium.
Tim Stevens06.04.2009
Nokia's Bluetooth BH-905 is 'the best headset ever made'
Pretty strong words from Nokia calling its new BH-905 headset "the best headset ever made." The claim comes as a result of a partnership with Wolfson Microelectronics to add its 10-microphone "feed-forward" active noise-cancellation technology to the headset -- 8 mics for capturing background noise, 2 for your voice. The headset can connect wirelessly over Bluetooth or via a selection of plugs for your home stereo, MP3 player, or airplane jack. It also features high-performance speakers with stainless steel audio controls on one can, phone controls on the other. They'll hit globally in August for a steep pre-tax price of €285 / $403. Hey, that's not bad for the best ever.[Thanks, Stephen R.]Read -- AnnouncementRead -- Microsite with video
Thomas Ricker06.02.2009
Toshiba's auxiliary speaker cancels noise from main speaker
Er, something like that. Reportedly, Toshiba has conjured up some sort of newfangled technology that's able to more accurately reproduce sound by using a noise canceling auxiliary speaker. Specifically, the tech utilizes "sound from an auxiliary speaker to eliminate noise generated from the main speaker," and in case your wild guess wasn't good enough, it relies on "opposite-phase sound waves generated from the auxiliary speaker attached to the main speaker" to make it all happen. We know, our head is spinning just as fast as yours here, and it's all the more difficult to comprehend without an actual product to demonstrate. That said, Tosh is planning to conduct research and development in order to implement this into its own products, so hopefully we'll be seeing something a touch more tangible real soon.
Darren Murph03.19.2009
Hitachi Maxell intros noise canceling, battery draining iPod headphones
If short, intense sessions with your iPod are your bag, these new Maxell heaphones might just do the trick. Compatible with your fourth-gen iPod (or your first and second-gen iPod touch) the HP-NC20.IP earbuds offer active noise cancellation from 50-700Hz and noise suppression up to 20dB. Since they rely on the iPod dock for audio and power, you're stuck using the volume control on the headphones themselves, and battery life is significantly reduced -- anywhere from one half to two-thirds. If you're one of those people who never stops rocking, you might want to stick to something a little more passive, headphones-wise. But if you tend to "rock out" in concentrated amounts, these just might be the earbuds for you. Due to hit the streets of Japan on December 12 for a retail price of ¥8,000 (about $83).[Via AV Watch]
Joseph L. Flatley11.19.2008
SoundSense unveils sophisticated Noise Cancellation System for audio purists
For home theater owners that love audio as much as (if not more than) video, unwanted noise is a real downer. Thankfully, the sound engineers at SoundSense completely agree, and now the company known for its acoustic dampening solutions is delivering a Noise Cancellation System that reportedly eliminates all that excess noise when you fire up your speakers and amplifiers. Put simply, the process simply utilizes a small microphone and speaker; the "noise-canceling speaker emits sound with opposite qualities of the noise source, thus eliminating distracting sounds." We've no idea how costly said solution will be, nor if it will be easy for novices to use, but don't hesitate to give SoundSense a call and see what it'll take to zap the interference lingering in your HT.
Darren Murph08.01.2008
Radius' noise-canceling earbuds for your iPod nano
Got a third-generation iPod nano? Looking for a new set of earbuds, preferably with noise-canceling abilities? If so, look no further than Radius' new set, which plug right into the dock in order to extract all the juice they need to block out extraneous clamor. The radStrap canalphones are expected to ship in black, green and silver, and feature a neck strap, on / off switch for the noise-cancellation, an aluminum housing and frequency response of 20Hz to 20kHz. Check 'em out next month for ¥8,980 ($82), but don't get your hopes up for a bonafide US release.
Darren Murph11.30.2007
Sound ID's SM100 Bluetooth headset tunes you into nature
We've got Bluetooth headsets that cancel noise, amplify voices, and make you look good not entirely cockamamie, but Sound ID's latest iteration actually gives you one less reason to ever take it off. The minuscule earpiece sports compatibility with handsfree Bluetooth profiles, around eight hours of talk time and 72 hours of standby, auditory and visual low battery warnings, dual omni-directional silicon microphones, and a trio of modes to fit your situation. It also touts a NoiseNavigation feature that magnifies and cancels appropriate sounds automatically, and just in case you get tired of only hearing face-to-face conversations out of one ear, the "Environmental Mode" actually brings in ambient noise in order to make you forget about the critter hanging off your eyeglass holder. Notably, the $129.99 SM100 even features a One2One mode that enables "Bluetooth communication between two modules" without the use of a cellphone, which should definitely appease the anti-social social crowd.[Via Slashphone]
Darren Murph05.15.2007
Hands-on with Aliph's Jawbone Bluetooth headset
What makes a Bluetooth headset great? Does it need to be so small as to be virtually invisible? Does it need to be a brilliantly-designed fashion accessory? Perhaps easy to use, easy to hear, and easy to be understood? Ultimately, of course, no model is perfect; every headset on the market is a compromise, a reflection of the manufacturer's (and the buyer's) priorities. So we basically went into the review of the Bluetooth variant of Aliph's lauded Jawbone with that same mentality, hoping that it'd prevent us from getting distracted by any miscellaneous shortfalls in the product -- the Jawbone's draw, after all, is its noise reduction circuitry, and that's what we really wanted to report on here. Instead, we came away with a shockingly positive impression of the Jawbone not just as a technological overachiever, but as a legit headset that we could see ourselves using day in and day out. Read on to find out why.
Chris Ziegler04.01.2007
Gennum's nx6000 noise cancelling Blueooth headset: now with more extreme
If Gennum's nXZEN Bluetooth headset with noise cancellation caught you eye last year then check the evolution, son. The nX6000 adopts a new design, Bluetooth 2.0, and mini-USB jack yet drops the weight considerably from 17-grams to 10.9-grams. Their FRONTWAVE Extreme noisecancellation is combined with digital voice isolation technology and dual-microphone array that isolates the user's voice from the ambient noise. The headset features 6 hours of talk time / 90 hours of standby and accepts a recharge to its Lithium Polymer battery over USB.
Thomas Ricker01.08.2007