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MP3

You have probably heard the name MP3 before, and have seen MP3 players for sale, or read your DVD player will also play an MP3 disk. But what exactly is MP3..

In 1987, the Fraunhofer IIS started to work on audio coding for digital audio broadcasting (DAB). In a joint cooperation with the University of Erlangen, the Fraunhofer IIS finally devised a very powerful algorithm that is standardized as ISO-MPEG Audio Layer-3

Compact disks (CD's)

The audio bandwidth of a digital audio signal, typically consist of 16 bit samples recorded at a sampling rate more than twice the actual audio bandwidth (44.1 kHz) so for one second of stereo music in CD quality you will have 1.400 Mbit

Compression

By using MPEG audio coding, you may shrink down the original sound data from a CD by a factor of 12, without losing quality. Factors of 24 and even more still maintain a sound quality that is significantly better than what you get by just reducing the sampling rate and the resolution of your samples.

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