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5-4. Playing an audio CD and MP3/WMA discs
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5
Audio system
■ CD player protection feature
To protect the internal components, playback is automatically stopped when a
problem is detected.
■ If a CD is left inside the CD player or in the ejected position for extended
periods
The CD may be damaged and may not play properly.
■ Lens cleaners
Do not use lens cleaners. Doing so may damage the CD player.
■ MP3 and WMA files
MP3 (MPEG Audio LAYER3) is a standard audio compression format.
Files can be compressed to approximately 1/10 of their original size by using
MP3 compression.
WMA (Windows Media Audio) is a Microsoft audio compression format.
This format compresses audio data to a size smaller than that of the MP3 for-
mat.
There is a limit to the MP3 and WMA file standards and to the media/formats
recorded by them that can be used.
● MP3 file compatibility
• Compatible standards
MP3 (MPEG1 LAYER3, MPEG2 LSF LAYER3)
• Compatible sampling frequencies
MPEG1 LAYER3: 32, 44.1, 48 (kHz)
MPEG2 LSF LAYER3: 16, 22.05, 24 (kHz)
• Compatible bit rates (compatible with VBR)
MPEG1 LAYER3: 32—320 (kbps)
MPEG2 LSF LAYER3: 8—160 (kbps)
• Compatible channel modes: stereo, joint stereo, dual channel and mon-
aural
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