Boss Audio Systems BV7300 manual Playing MP3 discs What is MP3?, Corresponding file systems

Playing MP3 discs

What is MP3?

MP3 (MPEG-1 Audio Layer 3) is a compression standard prescribed by the ISO, the International Standardization Organization and MPEG, which is a joint activity institution of the IEC.

MP3 files contain compressed audio data. MP3 encoding is capable of compressing audio data at extremely high ratios, reducing the size of music files to as much as one-tenth their original size. This is achieved while still maintaining near-CD quality. The MP3 format realizes such high compression ratios by eliminating the sounds that are either inaudible to the human ear or masked by other sounds.

Corresponding file systems

This device supports discs formatted with ISO9660 level 1 or level 2. Under the ISO9660 standard, there are some restrictions to remember.

The maximum nested folder depth is 8 (including the root directory). The number of characters for a folder/file names are letters A-Z (all caps), numbers 0-9, and ‘_’ (underscore).

This device also can play back discs in Joliet, Romeo, etc., and other standards that conform to ISO9660. However, sometimes the file names, folder names, etc., are not displayed correctly.

Playing a JPEG disc

When preparing a disc of jpeg images to be shown using the DVD player, please note that following guidelines:

•The recommended image size is 640 x 480 pixels. If a file is recorded at a higher resolution, the player must resample it, which will cause delays in displaying the image.

•Only “baseline” type JPEG images can be displayed on this player. Ths is the typical format used in digital cameras and web cameras.

“Progressive” (typically used for website display) or “lossless” (an older format which is rarely used today) JPEG files cannot be played. So be sure you are saving the files in the proper format. If you play a progressive or lossless JPEG image, a black screen will appear. When you next select a baseline image, you may experience some delays.

Playing MPEG discs

-This unit can play back MPEG 1 or 2 files with the extension code <.mpg>.

-Audio stream should conform to MPEG1 Audio Layer 2.

Frequently asked questions

-I inserted a DVD disc, but it cannot be played. The message “REGION ERROR” is displayed.

DVD players and discs all have “REGION CODES.” If the region code number on the DVD disc does not correspond to the region number of this DVD player, the unit cannot play the disc.

-When I insert a DVD disc, there is a window shown on the screen for me to enter a 4 character password. Why?

The current disc has a “Parental Control” level, and the player’s parental level is set below the level of the disc. To view this disc, you should enter the correct password to play the disc normally.

NOTE:

To set the “Parental Control” level, please refer to “Parental Control Level” on page 22.

BV7300 User’s Manual - page 24