2009 Lexus GX 470 Navigation Manual - Page 245

AUDIO/VIDEO SYSTEM MP3/WMA files D MP3 (MPEG Audio Layer 3) and WMA (Windows Media Audio) are audio compression standards. D The MP3/WMA player can play MP3 and WMA files on CD−ROM, CD−R and CD−RW discs. The unit can play disc recordings compatible with ISO 9660 level 1 and level 2 and with the Romeo and Joliet file system. D When naming an MP3 or WMA file, add the appropriate file extension (.mp3 or .wma). D The MP3/WMA player plays back files with .mp3 or .wma file extensions as MP3 or WMA files. To prevent noise and playback errors, use the appropriate file extensions. D The player can play only the first session using multi−session compatible CDs. D MP3 files are compatible with the ID3 Tag Ver. 1.0, Ver. 1.1, Ver. 2.2 (front audio system only), and Ver. 2.3 formats. The unit cannot display disc title, track title and artist name in other formats. D WMA files can contain a WMA tag that is used in the same way as an ID3 tag. WMA tags carry information such as track title, artist name. D The emphasis function is available only when playing MP3/WMA files recorded at 32, 44.1 and 48 kHz. (The system can play MP3 files with sampling frequencies of 16, 22.05, and 24 kHz. However, the emphasis function is not available for files recorded at these frequencies.) D The sound quality of MP3/WMA files generally improves with higher bit rates. In order to achieve a reasonable level of sound quality, discs recorded with a bit rate of at least 128 kbps are recommended. Playable bit rates MP3 files: MPEG1 LAYER3-64 to 320 kbps MPEG2 LSF LAYER3-64 to 160 kbps WMA files: Ver. 7, 8 CBR-48 to 192 kbps Ver. 9 CBR-48 to 320 kbps The MP3/WMA player does not play back MP3/WMA files from discs recorder using packet write data transfer (UDF format). Discs should be recorded using "pre−mastering" software rather than packet−write software. The m3u playlists are not compatible with the audio player. MP3i (MP3 interactive) and MP3PRO formats are not compatible with the audio player. The MP3 player is compatible with VBR (Variable Bit Rate). When playing back files recorded as VBR (Variable Bit Rate) files, the play time will not be correctly displayed if fast−forward or reverse operations are used. It is not possible to check folders that do not include MP3/WMA files. MP3/WMA files in folders up to 8 levels deep can be played. However, the start of playback may be delayed when using discs containing numerous levels of folders. For this reason, we recommend creating discs with no more than two levels of folders. It is possible to play up to 192 folders or 255 files on one disc. D D D D D D D D 265