2745-5. Playing an audio CD and MP3/WMA/AAC discs
■Discs that can be used
Discs with the marks shown below can be used.
Playback may not be possible depending on recording format or disc fea-
tures, or due to scratches, dirt or deterioration.
CDs with copy-protection features may not play correctly.
■ CD player protection feature
To protect the internal components, playback is automatically stopped when a
problem is detected.
■ If a disc is left inside the CD pl ayer or in the ejected position for
extended periods
Disc may be damaged and may not play properly.
■ Lens cleaners
Do not use lens cleaners. Doing so may damage the CD player.
■ MP3, WMA and AAC 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 product is protected by certain intellectual property rights of Microsoft
Corporation and third parties. Use or distribution of such technology outside
of this product is prohibited without a license from Microsoft or an aut\
horized
Microsoft subsidiary and third parties.
This format compresses audio data to a size smaller than that of the MP3 for-
mat.
AAC is short for Advanced Audio Coding and refers to an audio compression
technology standard used with MPEG2 and MPEG4.
MP3, WMA and AAC file and media/fo rmats compatibility are limited.
● 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
