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MP3
MP3, which stands for MPEG-1 Audio Layer-3, is a format standard for music file compression. It
was codified by the Motion Picture Experts Group, a working group of ISO (International
Organization for Standardization).
It compresses audio CD data to approximately one tenth its original size. Because the MP3 encoding
algorithm has been made publicly available, there are various encoders and decoders that are
compliant with this standard.