MP3
MP3 is the most popular format because it has good quality and small size. This format had developed by Fraunhofer Institute. It's next generation, MP3 Pro provide same quality but with almost half bitrate from it's last generation. MP3 player can play MP3 Pro but not in optimum quality.
WAV
This format is the standard format in windows. Music file in this format is normally uncompresed, that's why music file in this format has big size.
AAC
AAC or Advanced Audio Coding is standard part from Motion Pictures Experts Group (MPEG) since 1997. It has twice sample rate than MP3. This format is used by Apple at their online music shop (iTunes).
WMA
This format is offered by Microsoft and almost all music vendor online like this format because it support Digital Rights Management (DRM). WWW.extremetech.com claimed that this format has better quality than MP3 and AAC.
OGG VORBIS
This format is the only one format that open and free. This format has better quality in low bitrate than other format.
REAL AUDIO
This format is developed by RealNetworks and find especiaaly in low bitrate that ussually use in video streaming.
MIDI
This format suitable for music output that use synthesizer but not suitable for convertion from analog music because it not too accurate. This format ussualy on small size and ussually use on ringtone.
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