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MP3 - Legacy Media

MP3 technology is shaking up the music business. For the first time, music listeners can store, play, and manipulate CD quality music on their computers. Along with downloading music, users of MP3 technology can store album art, recording-artist bios, notes, links to the artist's Web site, and even the songs' lyrics.
Additionally, MP3 provides a unique opportunity for artists. Using digital music, artists can distribute their music to a worldwide audience without being at the mercy of traditional record labels. This levels the playing field, giving independent musicians the ability to compete with the big boys in the music industry.

You most likely listen to digital music. If you download using peer-to-peer (P2P) the most popular format used is MP3. There was news that MP3 audio formats will no longer be continued but will be maintained in limited form. Since Napster first appeared on the scene during the dotcom era, MP3 started a craze of a music format available with Napster and then WinAmp. Then with the iPOD MP3 became portable. It was much more convenient to store MP3 formats on smartphones too and soon it replaced tape, radio and even CD.

Nature of Sound

Physicists view sound as a mechanical wave that propagates as a perturbation within an elastic medium or object. In other words, they view sound as the forwardand- backward motion (mechanical oscillation) of particles around their resting position. Electromagnetic waves, on the other hand, propagate as energy in the form of an electric field coupled to a magnetic field. Many people will find it easier to define sounds as auditory sensations. Sounds are produced by vibrating objects and these objects are sources, and the environment in which the sound is emitted carries the sound to our ears. When a sound reaches our ears, our brains allow us to perceive it, become aware of it and interpret it.