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Noise Canceling


— Wearable Electronics

Plantronics convertible mono to stereo Bluetooth headset

By - September 11, 2007 4 Pictures
September 12, 2007 Plantronics have introduced a Bluetooth convertible mono to stereo headset for MP3 Bluetooth enabled mobile phones. The Voyager 855 headset offers a convertible design for listening to calls in mono as well as listening to music in stereo as headphones via a detachable stereo cable. Drop the second earbud or detach the cable and the headset serves as a high-quality mono Bluetooth device. Read More
— Mobile Technology

Quellan's QNx220 Noise Canceller boosts mobile signal strength

By - September 2, 2007 1 Picture
September 3, 2007 Quellan has announced a new RF Noise Canceller that extends the advantages of the technology beyond the realm of purely audio applications to enhance signal strength and clarity for video reception. In a weak signal area such as underground roadways or in high rise environments, a cell phone using the QNx220 can recover several bars of lost signal strength and a GPS receiver can obtain a location lock in just seconds rather than minutes. Read More
— Telecommunications

Mini Bluetooth headset cancels background noise for clear mobile conversations

By - August 27, 2007 1 Picture
August 27, 2007 Background noise can make mobile phone conversations in bars, clubs and noisy workplaces virtually incomprehensible – which is why BlueAnt’s new Z9 Bluetooth headset features smart noise cancellation and voice boosting software. The difference is profound – with this tiny, 10-gram device you can now have natural, clear phone conversations in the noisiest environments. Read More
— Telecommunications

Noise-cancelling hands-free office headset

By - May 3, 2007 5 Pictures
May 4, 2007 Plantronics' latest wireless professional headset, the CS70N, incorporates noise-cancelling technology for clearer calls from up to 300 feet away from the receiver. Focusing on premium audio performance, style and comfort, the CS70N Wireless Headset System has been optimized for both traditional and IP telephony phones and provides office professionals with excellent hands-free mobility for increased accessibility and efficiency at work. Read More
— Mobile Technology

B&O mobile headset with Bluetooth and DSP

By - May 3, 2007 2 Pictures
May 4, 2007 Bang & Olufsen’s A8 earphones are now five years old but remain one of the most functional and aesthetic earphones on the market, having subsequently spawned the Earset 1 for mobile phones. Now the Danish tastemeister has evolved the distinctive, comfortable and stylish design to incorporate Bluetooth and Digital Signal Processing (DSP) noise cancellation technology. The US$420 Earset 2 offers four hours of talk time, weighs just 22g and will perform most admirably in any environment where background noise can take over. Exceptional transmission quality is achieved by two omni-directional microphones which filter and suppress background noise, giving the best voice transmission possible. The loudspeaker in Earset 2 is a fully-fledged closed cabinet loudspeaker unit in miniature. Supported by air vents and a bass port together with an ergonomic design, the loudspeaker has a frequency response that gives an exceptionally high degree of tonal precision. Read More
— Marine

Noise-cancelling piezo-ceramic bearings

By - February 15, 2007 1 Picture
February 16, 2007 In an interesting development, the same technology that is used in noise-cancelling headphones (roughly speaking) is to be applied to heavy marine engines to reduce their noise and vibrations. The vibrations from marine diesels spreads through the entire hull, but researchers have now found a way of blocking the sound immediately below the engine with the help of computer-controlled counter-vibrations from an active damper between the engine and the bearing by which the engine is attached to the hull. This active bearing is made primarily from piezo-ceramics, materials that can change their shape when electrically stimulated. If they are stimulated very quickly, they generate high-frequency vibrations – which are exactly what marine engines need. Using sophisticated sensors, the scientists measure the engine’s vibrations and trigger the piezo-ceramics such that they precisely counteract this motion. Read More
— Telecommunications

Innovative new RF Noise Cancellation Technology for Wireless Handheld Devices

By - December 7, 2006 11 Pictures
December 8. 2006 Quellan today announced the extension of its innovative Wideband noise cancellation technology to mobile handsets and consumer devices. Successfully used in data center applications to improve the crosstalk, speed and reach of interconnects, these smaller and lower power consumer devices reduce noise in wireless handsets, laptop computers and game consoles. Unlike filters, these devices cancel wideband noise in the receivers' input spectrum. By dropping the noise floor at the receivers input, a substantial improvement in signal-to-noise ratio is achieved, resulting in fewer dropped calls, continuous video capability and GPS location locks in high density urban areas. Read More
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