(PhysOrg.com) -- As our readers know, PhysOrg constantly strives to be on the cutting edge when it comes to the latest science and technology news. Most importantly, we want to get the news out to our readers as quickly as ...
(PhysOrg.com) -- Plastic that conducts electricity holds promise for cheaper, thinner and more flexible electronics. This technology is already available in some gadgets -- the new Sony walkman that was introduced earlier ...
Electronics & Semiconductors
Aug 17, 2009
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Buzz is building over Intel's secretive TV set-top box due out later this year, which the chipmaker claims will provide live and other content via the Internet, is easy to use, and boasts face-recognition technology so it ...
Hardware
Apr 11, 2013
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Consumers worlwide are very interested in tablet computers like Apple's iPad and electronic readers such as Amazon's Kindle, and sales of the devices could take off when prices drop, according to a new survey.
Consumer & Gadgets
May 18, 2010
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Robots that teach Chinese, computers controlled by moving the eyes and flying alarm clocks were among the weird and wonderful gadgets wowing crowds Wednesday at the world's top high-tech fair.
Consumer & Gadgets
Mar 3, 2010
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Pioneers in the development of the first MP3 players this week unveiled ground-breaking technology aimed at offering new content to music lovers during the MIDEM music industry trade fair.
Software
Jan 26, 2010
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(PhysOrg.com) -- Vibrations from the environments we live and work in could be much more widely harnessed as a clean source of electricity, due to cutting-edge UK research.
Engineering
Nov 30, 2009
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(AP) -- Some computer viruses have a crude but scary ability to spy on people by logging every keystroke they type. Now hackers and potentially law enforcement have another weapon: a virus that can eavesdrop on voice conversations ...
Internet
Sep 2, 2009
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Product: The Livio Radio, an Internet radio stereo featuring Pandora radio.
Consumer & Gadgets
Aug 14, 2009
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So there you are with all those videos, photos and MP3 music files, and the only place you can play all that digital entertainment is on your computer. It's probably sequestered away somewhere in the room you've designated ...
Consumer & Gadgets
Jul 2, 2009
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MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression. It is a common audio format for consumer audio storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on digital audio players.
MP3 is an audio-specific format that was designed by the Moving Picture Experts Group (MPEG) as part of its MPEG-1 standard and later extended in MPEG-2 standard. The first MPEG subgroup – Audio group was formed by several teams of engineers at Fraunhofer IIS, University of Hannover, AT&T-Bell Labs, Thomson-Brandt, CCETT, and others. MPEG-1 Audio (MPEG-1 Part 3), which included MPEG-1 Audio Layer I, II and III was approved as a committee draft of ISO/IEC standard in 1991, finalised in 1992 and published in 1993 (ISO/IEC 11172-3:1993). Backwards compatible MPEG-2 Audio (MPEG-2 Part 3) with additional bit rates and sample rates was published in 1995 (ISO/IEC 13818-3:1995).
The use in MP3 of a lossy compression algorithm is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio for most listeners. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size than the CD file created from the original audio source. An MP3 file can also be constructed at higher or lower bit rates, with higher or lower resulting quality.
The compression works by reducing accuracy of certain parts of sound that are considered to be beyond the auditory resolution ability of most people. This method is commonly referred to as perceptual coding. It uses psychoacoustic models to discard or reduce precision of components less audible to human hearing, and then records the remaining information in an efficient manner.
This text uses material from Wikipedia, licensed under CC BY-SA
