JVC KD-G647 - Инструкция по эксплуатации - Страница 21

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  –  Bit rate of WMA: 16 kbps — 32 kbps

(Sampling frequency: 22.05 kHz)
32 kbps — 320 kbps
(Sampling frequency: 48 kHz, 
44.1 kHz, 32 kHz)

•  The maximum number of characters for file/folder 

names vary depending on the disc format used 
(includes 4 extension characters—<.mp3> or 
<.wma>).

  –  ISO 9660 Level 1: up to 12 characters
  –  ISO 9660 Level 2: up to 31 characters
  –  Romeo: up to 128 characters
  –  Joliet: up to 64 characters
  –  Windows long file name: up to 128 characters
•  This unit can recognize a total of 512 files, 255 

folders, and 8 hierarchical levels.

•  This unit can play back files recorded in VBR (variable 

bit rate).

  Files recorded in VBR have a discrepancy in the 

elapsed time display, and do not show the actual 
elapsed time. In particular, this difference becomes 
noticeable after performing the search function.

•  This unit cannot play back the following files:
  –  MP3 files encoded in MP3i and MP3 PRO format.
  –  MP3 files encoded in an inappropriate format.
  –  MP3 files encoded with Layer 1/2.
  –  WMA files encoded in lossless, professional, and 

voice format.

  –  WMA files not based on Windows Media® Audio.
  –  WMA files copy-protected with DRM.
  –  Files which have data such as WAVE, ATRAC3, etc.
•  The search function works but search speed is not 

constant.

Playing MP3/WMA tracks from a USB device

•  While playing from a USB device, the playback order 

may differ from other players.

•  This unit may be unable to play back some USB 

devices or some files due to their characteristics or 
recording conditions.

•  Depending on the shape of the USB devices and 

connection ports, some USB devices may not be 
attached properly or the connection might be loose.

•  Some CD-Rs or CD-RWs may not be played back on 

this unit because of their disc characteristics, or for 
the following reasons:

  –  Discs are dirty or scratched.
  –  Moisture condensation has occurred on the lens 

inside the unit.

  –  The pickup lens inside the unit is dirty.
  –  The files on the CD-R/CD-RW are written using the 

“Packet Write” method.

  –  There are improper recording conditions (missing 

data, etc.) or media conditions (stained, scratched, 
warped, etc.).

•  CD-RWs may require a longer readout time since the 

reflectance of CD-RWs is lower than that of regular 
CDs.

•  Do not use the following CD-Rs or CD-RWs:
  –  Discs with stickers, labels, or protective seal stuck 

to the surface.

  –  Discs on which labels can be directly printed by an 

ink jet printer.

  Using these discs under high temperature or high 

humidity may cause malfunctions or damage to the 
unit.

Playing an MP3/WMA disc

•  This unit can play back MP3/WMA files with the 

extension code <.mp3> or <.wma> (regardless of 
the letter case—upper/lower).

•  This unit can show the names of albums, artists 

(performer), and Tag (Version 1.0, 1.1, 2.2, 2.3, or 
2.4) for MP3 files and for WMA files.

•  This unit can display only one-byte characters. No 

other characters can be correctly displayed.

•  This unit can play back MP3/WMA files meeting the 

conditions below:

  –  Bit rate: 8 kbps — 320 kbps
  –  Sampling frequency:
    48 kHz, 44.1 kHz, 32 kHz (for MPEG-1)
    24 kHz, 22.05 kHz, 16 kHz (for MPEG-2)
    12 kHz, 11.025 kHz, 8 kHz (for MPEG-2.5)
  –  Disc format: ISO 9660 Level 1/ Level 2, Romeo, 

Joliet, Windows long file name

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