Stereo wireless headset PHILIPS OM6777. Free Technical Library News

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PHILIPS OM6777 Stereo Wireless Headset

25.07.2005

Philips has unveiled a new reference design for its Bluetooth 1.2 wireless headset.

The device provides stereo sound and voice transmission. With it, you can listen to music played on your portable player or mobile phone without the risk of missing a phone call. The need for an all-in-one wireless headset is growing as the market for high quality mobile audio and video players expands and the integration of related capabilities into cell phones.

The development uses Philips Lifevibes Voice and LifeVibes Music technologies, which improve the sound quality. LifeVibes Voice performs noise reduction and enhances speech intelligibility even in noisy environments, while LifeVibes Music enhances stereo reproduction in audio recordings and dynamically adjusts bass boost.

The wireless headset, designated OM6777, is designed for plug-and-play use and is based on a proven stereo codec for audio streaming. An exemplary design will allow manufacturers who choose it as the basis for their end-user products to concentrate on their external design without worrying about the details of the technical implementation of functions.

The design uses the Philips Bluetooth BGB203/4 HCI element set, optimized for mobile applications due to power consumption and miniature size.

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Scientists make mistakes 07.01.2006

And especially medical scientists. This conclusion was reached by the Greek epidemiologist John Ioannides, after analyzing 49 scientific papers published in the most authoritative medical journals in the world from 1990 to 2003.

Moreover, articles were selected that had a great response among colleagues: each of them was cited in other papers at least a thousand times. It turned out that the results of 14 out of 49 works (almost a third!) were later refuted by other researchers.

Moreover, when Ioannides mathematically processed the data relating to the testing of the effectiveness of drugs or treatments contained in all 49 articles, it turned out that in many cases they were statistically unreliable. Either the number of patients in the experiments was too small, or the author of the study discarded those results that diverged from his expectations. In general, more than half of the analyzed works raise serious doubts.

Ioannides hopes that in more exact sciences, say in mathematics, physics, chemistry, things may be better.

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