JVC TH-A30R, XV-THA30R MP3 Introduction, What is MP3?, MP3 File Compatibility, Note on MP3 discs

MP3 Introduction

This system is incorporated with an MP3 decoder. You can play back MP3 tracks (files) recorded on CD-Rs and CD-RWs.

•Notice that “files” and “tracks” are used interchangeably.

What is MP3?

MP3 is an abbreviation of Motion Picture Experts Group (or MPEG) Audio Layer 3. MP3 is simply a file format with a data compression ratio of 1:10 (128 Kbps*). That means, by using MP3 format, one CD-R or CD-RW can contain 10 times as much data volume as a regular CD can.

*Bit rate is the average number of bits that one second of audio data will consume. The measuring unit used is Kbps (1000 bits per second).

To get a better audio quality, choose a higher bit rate. The most popular bit rate for encoding (recording) is 128 Kbps.

MP3 File Compatibility

•This system can only read MP3 files that are recorded in the format that is compliant with ISO 9660 Level 1 or Level 2.

•The system can read or play MP3 files only with the extension code—“.mp3”.

•ID3* tags cannot be shown on the display.

*An MP3 file can contain file information called “ID3 Tag” where its album name, performer, track title, etc. are recorded. There are two versions—ID3v1 (ID3 Tag version 1) and ID3v2 (ID3 Tag version 2).

Disc structure—How are MP3 files recorded and played back?

“MP3 files (tracks)” can be recorded in “directories (or folders),” in PC terminology.

During recording, the files and directories can be arranged in a way similar to arranging files and folder/directories of computer data. “Root” is similar to the root of a tree. Every file and directory can be linked to the root.

In compliance with ISO 9660, the maximum allowable depth of nested directories—so-called “hierarchy”—is eight (inclusive of the root).

Playback order, files search order, and directory search order of the MP3 files recorded on a disc are determined by the writing (or encoding) application; therefore, playback order may be different from the one you have intended while recording the folders/ directories and the files.

Note on MP3 discs

MP3 discs (either CD-R or CD-RW) require a longer readout time. (It differs due to the complexity of the directory/file configuration.)

STANDBY/ON

	AUDIO
	TV	VCR	RDS
			TV/VIDEO DISPLAY
DISPLAY	DISPLAY	STEP	TV CHANNEL
	AUDIO/	SUBTITLE	TV VOLUME
	FM MODE

VCR

DVD FM/AM AUX CONTROL

4	TUNER PRESET	¢
DOWN		UP

REW		FF
7	TUNING	3/8
	VCR CHANNEL
B.SEARCH		F.SEARCH

ENTER ENTER

VOLUME

TOP MENU MENU RETURN MUTING

			SOUND
1	2	3
PTY –	PTY SEARCH	PTY +	SETTING
4	5	6
			PRO LOGIC
7	8	9
SLOW		SETUP	TEST
	0
ANGLE	ZOOM	D.R.C	DSP MODE
REPEAT	A-B REPEAT	PROGRAM

CLEAR SEARCH REMAIN SLEEP

For in-depth information about a disc to be played back, see “Disc Introduction—DVD/VCD/CD” on page 25.

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