Appendix
Additional Information
!Up to eight tiers directory on a USB porta- ble audio player/USB memory can be played back.
!There may be a slight delay when starting playback of audio files on a USB portable audio player/USB memory with numerous folder hierarchies.
!Do not connect anything other than the USB portable audio player/USB memory.
!Operations may vary depending on the kind of USB audio player and a USB mem- ory.
The sequence of audio files on USB memory
For USB portable audio players, the sequence is different from that of USB memory and de- pends on the player.
Example of a hierarchy
: Folder
: Compressed audio file
1
2
3 
4
5 
6
Level 1 | Level 2 Level 3 Level 4 |
!01 to 05 represent assigned folder num- bers. 1 to 6 represent the playback se- quence. The user cannot assign folder numbers and specify the playback se- quence with this unit.
!Playback sequence of the audio file is the same as recorded sequence in the USB de- vice.
!To specify the playback sequence, the fol- lowing method is recommended.
1Create the file name including numbers that specify the playback sequence (e.g., 001xxx.mp3 and 099yyy.mp3).
2Put those files into a folder.
3Record the folder containing files into the
USB device.
However, depending on the system environ- ment, you cannot specify the file playback sequence.
Compressed audio compatibility
WMA
!Compatible format: WMA encoded by Windows Media Player
!Bit rate: 48 kbps to 320 kbps (CBR), 48 kbps to 384 kbps (VBR)
!Sampling frequency: 32 kHz to 48 kHz
!Windows Media Audio 9 Professional, Loss- less, Voice: No
MP3
!Bit rate: 8 kbps to 320 kbps
!Sampling frequency: 16 kHz to 48 kHz (32, 44.1, 48 kHz for emphasis)
!Compatible ID3 tag version: 1.0, 1.1, 2.2, 2.3, 2.4 (ID3 tag Version 2.x is given priority than Version 1.x.)
!M3u playlist: No
!MP3i (MP3 interactive), mp3 PRO: No
AAC
!Compatible format: AAC encoded by iTunes®
!Sampling frequency: 11.025 kHz to 48 kHz
!Transmission rate: 16 kbps to 320 kbps
!Apple Lossless: No
WAV
!Compatible format: Linear PCM (LPCM),
MS ADPCM
!Quantization bits: 8 and 16 (LPCM), 4 (MS
ADPCM)
!Sampling frequency: 16 kHz to 48 kHz
(LPCM), 22.05 kHz to 44.1 kHz (MS AD- PCM) 
92
En
