Headphones Claim 99% Noise Reduction
Techtree News Staff, Mar 17, 2008 1512 hrs IST
The world's first digital noise-canceling headphones, the six-ounces Sony MDR-NC500D headphones, have started shipping in Japan.
Headphones that claim to reduce up to 99 percent of ambient noise at 160HZ, which happens to be the peak frequency of a jet engine -- Sony's MDR-NC500D -- have started shipping in the Japanese market.
Touted as truly the world's first digital noise-canceling headphones, the six-ounces MDR-NC500D headphones use digital technology to more accurately reduce stress-inducing noise from planes, trains, and buses, while providing a high-quality audio experience.
This is the result of a unique digital noise-canceling software engine, a set of digital filters located in the built-in digital signal processor, the company said.
Using digital technology, the headphones automatically create waves that travel in the opposite direction to noise waves. Noise is eliminated by the conflicting waves canceling each other out. The company claims that this digital-based process enables more effective noise cancellation than is possible using analog filter technology.
The headphones offer three distinct noise-canceling modes optimized for different environments, including airplanes, trains/buses, or offices. According to the company, each mode uses a different digital filter in the digital signal processor, which is specifically tuned for effective noise reduction in these different sound environments.
By pressing an artificial intelligence (AI) noise-canceling button placed outside of the right ear piece, the headphones scan the ambient noise profile and intelligently select the best mode to cancel out the highest amount of unwanted sound, the company said. In addition, the monitor switch allows users to temporarily suspend the noise-cancellation feature and mute the music to listen to flight announcements.
The MDR-NC500D headphones are powered by an internal lithium-ion battery that can operate for up to 16 hours on a single charge. The headphones are expected to roll out Japan in April for an approximate price of 49,350 yen.
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well am Mr.Felix Watson.l will like to no if l can order some head phone to a client.l will need 200pieces of the item.so l will like to no the price list and also send me the cost of the items.l will also like to no about your payment method if you accept credit cards okay.it very urgent please so l wish to hear from you soon.or can contact me on my cell phone for more business ok.07024083411.thank
by Mr Watson, CL, on May 07, 2008 05:24 PM, Report abuse Reply