About usb devices, Playback order of mp3/wma/aac files, About mp3 files – Sony CDX-GT41UW Manuel d'utilisation

Page 14: About wma files, About aac files

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About USB devices

• Mass Storage Class and ATRAC Audio Device

type USB devices compliant with the USB
standard can be used. However, this unit cannot
recognize USB devices via a USB HUB, and is not
compatible with devices that have a HUB
function. For details on the compatibility of your
USB device, visit the Sony support website
(page 19).

• Corresponding codec is different according to

device type.
– Mass Storage Class: MP3/WMA/AAC
– ATRAC Audio Device: ATRAC/MP3/WMA/

AAC

• DRM (Digital Rights Management) files other

than ATRAC cannot be played.

• Displayable data are as follows.

Mass Storage Class:
– Folders (Albums): 512, Files (Tracks): 65535
ATRAC Audio Device: ATRAC/MP3/WMA/AAC
– Albums/Artists/Playlists: 65535, Tracks: 65535

Notes on USB devices
When using a cable, use the one supplied with the

USB devices to connect.

Do not use USB devices that are so large or heavy

that may interfere with driving operations.

Do not leave USB devices in a parked car, as

malfunctions may result.

It may take time for playback to begin, depending on

the amount of recorded data.

Backup of data in USB devices is recommended.

Playback order of MP3/WMA/AAC
files

About MP3 files

• MP3, which stands for MPEG-1 Audio Layer-3, is

a music file compression format standard. It
compresses audio CD data to approximately 1/10
of its original size.

• ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to

MP3 only. ID3 tag is 15/30 characters (1.0 and
1.1), or 63/126 characters (2.2, 2.3 and 2.4).

• When naming an MP3 file, be sure to add the file

extension “.mp3” to the file name.

• During playback or fast-forward/reverse of a VBR

(variable bit rate) MP3 file, elapsed playing time
may not display accurately.

Note on MP3
If you play a high-bit-rate MP3, such as 320 kbps,
sound may be intermittent.

About WMA files

• WMA, which stands for Windows Media Audio,

is a music file compression format standard. It
compresses audio CD data to approximately 1/22*
of its original size.

• WMA tag is 63 characters.
• When naming a WMA file, be sure to add the file

extension “.wma” to the file name.

• During playback or fast-forward/reverse of a VBR

(variable bit rate) WMA file, elapsed playing time
may not display accurately.

* only for 64 kbps

Note on WMA
Playback of the following WMA files is not supported.
– lossless compression
– copyright-protected

About AAC files

• AAC, which stands for Advanced Audio Coding,

is a music file compression format standard. It
compresses audio CD data to approximately 1/11*
of its original size.

• AAC tag is 126 characters.
• When naming an AAC file, be sure to add the file

extension “.m4a” to the file name.

• During playback or fast-forward/reverse of a VBR

(variable bit rate) AAC file, elapsed playing time
may not display accurately.

* only for 128 kbps

Note on AAC
Playback of a copyright-protected file is not supported.

Folder
(album)

MP3/WMA/
AAC file
(track)

MP3/WMA/AAC

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