MP3/WMA/AAC Player (continued)
Each of MP3 (MPEG Audio
Note: Each of encoding software is not included with this unit.
compressed audio files
Setting at file making
Common
¡High bit rate and high sampling frequency are recom- mended for high quality sounds.
¡Selecting VBR (Variable Bit Rate) is not recommended because playing time is not displayed properly and sound may be skipped.
¡The playback sound quality differs depending on the encod- ing circumstances. For details, refer to the user manual of your own encoding software and writing software.
¡Be sure to put an extension compatible with the format.
MP3
¡It is recommended to set the bit rate to “128 kbps or more” and “fixed”.
WMA
¡It is recommended to set the bit rate to “64 kbps or more” and “fixed”.
¡Do not set the copy protect attribute on the WMA file to enable this unit to play back.
AAC
¡It is recommended to set the bit rate to “128 kbps or more” and “Stereo”.
¡Files with the extension of “.m4a” encoded using iTunes version 6 are playable on this unit. Some of the files using other encoders are not playable.
¡Files encoded using Apple Lossless Encoder are not playable.
¡Files with copyright protection are not playable.
Cautions as to
Compression formats
Compression method | Bit rate | VBR | Sampling frequency |
|
|
|
|
MPEG 1 audio layer 3 (MP3) | 32 k – 320 kbps | Yes | 32, 44.1, 48 kHz |
|
|
|
|
MPEG 2 audio layer 3 (MP3) | 8 k – 160 kbps | Yes | 16, 22.05, 24 kHz |
|
|
|
|
MPEG 2.5 audio layer 3 (MP3) | 8 k – 160 kbps | Yes | 12, 11.205, 8 kHz |
|
|
|
|
Windows Media Audio Ver. 2, 7, 8, 9* | 32 k – 192 kbps | Yes | 32, 44.1, 48 kHz |
|
|
|
|
MPEG 4 AAC LC | 24 k – 320 kbps | Yes | 8, 11.205, 12, 16, 22.05, |
|
|
| 24, 32, 44.1, 48 kHz |
|
|
|
|
* WMA 9 Professional/LossLess/Voice are not supported.
Caution
Never put an extension indicating compressed audio (such as “.mp3”, “.wma”, and “.m4a”) to files other than compressed audio files. This may not only produce noise from the speaker damage, but also damage your hearing.
as to the display of | this unit |
Cautions |
|
Display Information
¡ Common | ¡ WMA |
Folder name, | Album name, |
File name | Title name/artist name |
¡ MP3 | (WMA tag) |
| |
Album name, | ¡ AAC |
Title name/artist name | Album name, |
(ID3 tag) | Title name/artist name |
| (AAC tag) |
|
|
Displayable characters
¡Displayable length of file name/folder name: within 64 characters. (Unicoded file and folder names are reduced by half in the number of displayable charac- ters.)
¡Name files and folders in accordance with the stan-
dard of each file system. Refer to the instructions of writing software for details.
¡ASCII character set and special characters in each lan- guage can be displayed.
ASCII character set
A to Z, a to z, digits 0 to 9, and the following sym- bols:
(space) ! ” # $ % & ’ ( ) * + ,
Notes:
¡Characters may be garbled depending on encoding software to be used.
¡Undisplayable characters and symbols will be convert- ed into an asterisk (*).
26