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Glossary
MUSIC
MP3 = Is the file extension for MPEG-1, audio layer 3. Layer 3 is one of
three coding schemes (layer 1, layer 2 and layer 3) for the compression of
audio signals. Layer 3 removes the redundant and irrelevant parts of a
sound signal, which the human ear does not hear. It uses Modified Discrete
Cosine Transform to implement a filter bank, increasing the frequency
resolution 18 times higher than that of layer 2.
WAV = Is the file extension for sound files and was developed by Microsoft
and IBM. WAV sound files end with a .wav extension and is compatible with
Windows applications supporting audio.
AIFF = Is short for Audio Interchange File Format, an audio format that was
developed by Apple Computer and is the standard audio format for
Macintosh computers. AIFF use a .AIF or .IEF extension.
WMA = Is short for Windows Media Audio and is a audio format that was
created by Microsoft. It is similar to MP3, although WMA can compress at a
higher rate than MP3.
M3U = M3U is a playlist format and is the default playlist format of WinAMP
and most other media player software. It allows multiple files to be queued in
a program in a specific format.
PLS = A proprietary playlist format used for playing Shoutcast and other
audio streams.