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MP3-FORMATTED FILE

id0903a1887200
1. Outline of CD-R and CD-RW

  1. Definition

  CD-R: The CD-R is a non-rewritable version. Once a section of a CD-R is written, it cannot be erased or rewritten.
  CD-RW: The CD-RW is a re-writable version of CD-ROM and can be written the data an unlimited number of times.

  2. Since a reflected laser beam amount of the CD-R/RW is less than the reflected laser beam amount of the conventional CD media, the CD player/changer may not play the CD-R/RW or have the sound jumped.
  3. Since the recording quality of the CD-R/RW vary widely, some CD-R/RW may not be played.

2. Recording method

  • There are two methods for recording.
  1. Classification by recorder

  • Record the audio data in the audio-CD by audio recorder.
  - The price of the audio recorder and original audio-CD includes the copyright fee.
  • Recorded the audio data in the conventional data-CD by the personal computer.
  - The data-CD is cheaper than the audio-CD. But, there is a CD with the low quality.

  2. Classification by audio data uncompression/compression.

  • Uncompressed audio data
  - The CD-R/RW player can play the uncompressed audio data.
  • Compressed audio data
  - It is possible to record the large quantity of music in a disc. The sound quality varies depends on the audio data compression format. The compressed audio data can be played on the applicable player only.
  Type of compression format:
  - MP3: MPEG Audio Layer 3 Mazda genie MP3 applicable CD player is available.
  - WMA: Windows Media Audio.
  - ATRAG: Adaptive TRansform Acoustic Coding.

3. MP3

  The following condition should be met in order to record the MP3-formatted data on the MP3 applicable CD player:

Media | Applicable to the CD-R/RW
--- | ---
Logical format | ISO 9660 lavel 1&2/Joliet/Romeo
Number of directly | 8 directly
Number of files | Maximum 255 as a total number of file and folder Maximum 155 for folder
ID3 TAG | Applicable to Ver1.1, 2.3 and 2.4
File extension | MP3
Packet writing | Not applicable
Bit rate | 8Kb320Kb/VEBR
Sampling rate | 11.025KHz|48KHz