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Terms

Aspect ratio

This is the width-to-height ratio of a TV screen.

A regular display has an aspect ratio of 4:3.

Wide screen displays have an aspect ratio of

16:9, providing a bigger picture for exceptional

presence and atmosphere.

Bit rate

This expresses data volume per second, or bps

units (bits per second). The higher the rate,

the more information is available to reproduce

the sound. Using the same encoding method

(such as MP3), the higher the rate, the better

the sound.

Chapter

DVD titles are in turn divided into chapters

which are numbered in the same way as the

chapters of a book. With DVD video discs fea-

turing chapters, you can quickly find a desired

scene with chapter search.

Dolby Digital

Dolby Digital provides multi-channel audio

from up to 5.1 independent channels. This is

the same as the Dolby Digital surround sound

system used in theaters.

DTS

This stands for Digital Theater Systems. DTS is

a surround system delivering multi-channel

audio from up to 6 independent channels.

ID3 tag

This is a method of embedding track-related

information in an MP3 file. This embedded in-

formation can include the track title, the ar-

tists name, the album title, the music genre,

the year of production, comments and other

data. The contents can be freely edited using

software with ID3 Tag editing functions.

Although the tags are restricted as to the num-

ber of characters, the information can be

viewed when the track is played back.

ISO9660 format

This is the international standard for the for-

mat logic of CD-ROM folders and files. For the

ISO9660 format, there are regulations for the

following two levels.

Level 1:

The file name is in 8.3 format (the name con-

sists of up to 8 characters, half-byte English

capital letters and half-byte numerals and the

_ sign, with a file-extension of three charac-

ters.)

Level 2:

The file name can have up to 31 characters (in-

cluding the separation mark . and a file ex-

tension). Each folder contains less than 8

hierarchies.

Extended formats

Joliet:

File names can have up to 64 characters.

Romeo:

File names can have up to 128 characters.

Linear PCM (LPCM)/Pulse code

modulation

This stands for linear pulse code modulation,

which is the signal recording system used for

music CDs and DVDs. Generally, DVDs are re-

corded with higher sampling frequency and

bit rate than CDs. Therefore, DVDs can provide

higher sound quality.

m3u

Playlists created using the WINAMP soft-

ware have a playlist file extension (.m3u).

MP3

MP3 is short for MPEG Audio Layer 3. It is an

audio compression standard set by a working

Additional Information

En

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Appendix

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