Toyota TNS350 Owner's Manual page 239

AUDIO SYSTEM
MP3/WMA/AAC files
● MP3 (MPEG Audio Layer 3), WMA (Windows
Media Audio) and AAC (Advanced Audio
Coding) are audio compression standards.
● The SD/USB player can play MP3, WMA
and AAC files on SD memory card and USB
memory device.
● When naming an MP3 or WMA file, add the
appropriate file extension (.mp3 or .wma).
● When naming an AAC file, add the appropriate
file extension (.m4a).
● The SD/USB player play back files with .mp3,
.wma or .m4a file extensions as MP3, WMA
or AAC files. To prevent noise and playback
errors, use the appropriate file extensions.
● MP3 files are compatible with the ID3 Tag Ver.
1.0, Ver. 1.1, Ver. 2.2, and Ver. 2.3 formats.
The unit cannot display folder name, file
name and so on in other formats.
● 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.
● AAC files allow you to attach text information
called iTunes tag to display track titles and
album titles.
● 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.)
● The sound quality of MP3/WMA files
generally improves with higher bit rates. In
order to achieve a reasonable level of sound
quality, SD memory card and USB memory
device recorded with a bit rate of at least 128
kbps are recommended.
238 TNS 350
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
AAC files:
MPEG4 AAC—VBR (Variable Bit Rate)
● The m3u playlists are not compatible with the
audio player.
● MP3i (MP3 interactive) and MP3PRO formats
are not compatible with the audio player.
● The SD/USB player is compatible with VBR
(Variable Bit Rate).
● HE-AAC (SBR format) files are not supported
by this system. So if they are played on
this system, their sound quality may be
degraded.
● The AAC files that can be played on this
system are only those created with iTunes
(Ver. 9.0.2.25). AAC files created with any
file editing software other than iTunes may
not normally played back.
● 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/AAC files in folders up to 8 levels
deep can be played.
of playback may be delayed when using
SD memory card or USB memory device
containing numerous levels of folders. For
this reason, we recommend creating SD
memory card and USB memory device with
no more than two levels of folders.
● It is possible to play up to 255 folders or
3999 files on one SD memory card and USB
memory device.
However, the start