Sony CMD-MZ5 User Manual page 109

MP3
Abbreviation for MPEG-1 Audio Layer3. A standard for audio data compression
determined by the Motion Picture Experts Group, which is an ISO (International
Organization for Standardization) working group.
It enables compression of audio data to about 1/10 of the data size of a standard
compact disc. Since the MP3 encoding algorithm is disclosed, there are various
encoders/decoders compliant with this standard, including freeware that is
available for no charge. Thus, the MP3 standard is widely used in the computer
field.
Bitrate
Quantity, per second, of information. The unit is bps (bit per second). You can
choose from 132kbps/105kbps/66kbps when recording a compact disc or
converting an MP3/WAV file to an ATRAC3 file. For example, 105kbps means
there are 107520 bits of information per second being transferred. The greater the
number, the greater the amount of the information. When comparing audio files of
the same format, you can enjoy a better sound quality when recorded at 132kbps
than at 105kbps, also better at 105kbps than at 66kbps. (Audio files cannot be
compared if of different format)
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