CD/MP3 Operations

What is MP3?

MP3 is an audio compression method and classified into audio layer 3 of MPEG standards.

This audio compression method has penetrated into PC users and become a standard format.

This MP3 features the original audio data compression to about 10 percent of its initial size with a high sound quality. This means that about 10 music CDs can be recorded on a CD-R disc or CD-RW disc to allow a long listening time without having to change CDs.

Precautions when creating MP3 disc

●Usable sampling rates and bit rates: 1. MP3: Sampling rate 8k Hz-48 kHz,

Bit rate: 8 kbps-320 kbps / VBR

●File extensions

1.Always add a file extension“.MP3” to MP3 file by using single byte letters.

If you add a file extension other than speci- fied or forget to add the file extension , the file cannot be played.

2.Files without MP3 data will not play.

The indication “– –:––” appears in the play time display if you attempt to play files with- out MP3 data.

●Logical format (File system)

1.When writing MP3 file on a CD-R disc or CD- RW disc, please select“ISO9660 level 1, 2 or JOLIET or Romeo” as the writing software format. Normal play may not be possible if the disc is recorded on another format. This equipment does not support packet writing.

2.The folder name and file name can be dis- played as the title during MP3 play but the title must be within 64 single byte alphabeti- cal letters and numerals (including an exten- sion). 32 characters when written in JOLIET format.

3.Do not affix a name to a file inside a folder having the same name.

●Folder structure

1.A disc with a folder having more than 8 hierarchical levels will be impossible.

●Number of files or folders

1.Up to 256 files (total number of folder and file) can be played. The root folder is counted as one folder.

2.Tracks are played in the order that they were recorded onto a disc. (Tracks might not al- ways be played in the order displayed on the PC.)

3.Some noise may occur depending on the type of encoder software used while recording.

Multisession function

When a disc contains both normal CD type tracks and MP3 type tracks mixedly, you can select which type of the recorded tracks to play.

●Default value is “CD”.

Each time you press and hold the [BND] button for 1 second or longer, the mixed mode is switched between CD type or MP3 type.

The following indication appears in the title display when switching the track type to be played.

●Display when CD type track is selected:

●Display when MP3 type track is selected:

1.Types of recording that can be played are as follows.

Setting

Set to CD

Set to MP3

Disc

 

 

Mixed with CD and

Play CD

Play MP3

MP3 type tracks

 

 

CD type track

Play CD

Play CD

only

 

 

MP3 type track

Play MP3

Play MP3

only

 

 

2.After making these settings, remove the disc and then reinsert it.

3.When a mixed mode CD is loaded and CD is set, the track to be played first is MP3 file data and no sound is heard.

Loading a CD

Insert a CD into the center of the insertion slot with the label side facing up. The CD plays automatically after loading.

Notes:

•Never insert foreign objects into the CD insertion slot.

•When a CD is loaded in the unit, never try to in- sert another CD in this case.

•Discs not bearing the or mark and CD-ROMs cannot be played by this unit.

•Some CDs recorded in CD-R mode may not be usable.

•Even when recorded in CD-RW mode, some CDs not be usable.

12 ADB340MP/ADB341MP