Lexus ES350 Service Manual page 312

312
5-6. Using an external device
MP3, WMA and AAC files
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MP3 (MPEG Audio LAYER 3) is a standard audio compression format.
Files can be compressed to approximately 1/10 of their original size using MP3 com-
pression.
WMA (Windows Media Audio) is a Microsoft audio compression format. This format
compresses audio data to a size smaller than that of the MP3 format.
AAC is short for Advanced Audio Coding and refers to an audio compression tech-
nology standard used with MPEG2 and MPEG4.
MP3, WMA and AAC file and media/formats compatibility are limited.
MP3 file compatibility
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• Compatible standards
MP3 (MPEG1 AUDIO LAYERIII, MPEG2 AUDIO LAYERIII)
• Compatible sampling frequencies
MPEG1 AUDIO LAYERIII: 32, 44.1, 48 (kHz)
MPEG2 AUDIO LAYERIII: 16, 22.05, 24 (kHz)
• Compatible bit rates (compatible with VBR)
MPEG1 AUDIO LAYERIII: 32-320 (kbps)
MPEG2 AUDIO LAYERIII: 8-160 (kbps)
• Compatible channel modes: stereo, joint stereo, dual channel and monaural
WMA file compatibility
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• Compatible standards
WMA Ver. 7, 8, 9 (only compatible with Window Media Audio Standard)
• Compatible sampling frequencies
32, 44.1, 48 (kHz)
• Compatible bit rates (only compatible with 2-channel playback)
Ver. 7, 8: CBR 48-192 (kbps)
Ver. 9: CBR 48-320 (kbps)
AAC file compatibility
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• Compatible standards
MPEG4/AAC-LC
• Compatible sampling frequencies
11.025/12/16/22.05/24/32/44.1/48 (kHz)
• Compatible bit rates
16-320 (kbps)
• Compatible channel modes: 1 ch and 2 ch
File names
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The only files that can be recognized as MP3/WMA/AAC and played are those with
the extension .mp3, .wma or .m4a.
ES350_OM_OM33B64U_(U)
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