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For reference
3. Glossary
CD-R
This is a disc that can only be recorded once. 
Recorded data cannot be deleted. There are two 
types of CD-R, one having a capacity of 650MB 
(74 minutes of music), the same as a regular CD, 
and the other having a capacity of 700MB (80 
minutes of music). 
(Compact Disc Recordable)
CD-DA
This disc is the standard for recording and playing 
music data. One track is recorded with one song, 
and a maximum of 74 minutes of music can be 
recorded. 
 (Compact Disc Digital Audio)
CD-RW
This disc uses a phase transformation method 
that enables recording and deleting of data as 
many times as needed. The capacity is 700MB 
(80 minutes of music). 
(Compact Disc ReWritable)
EQ (Equalizer)
This enables the setting of emphasis on certain 
sounds in the bass-treble range to achieve the 
preferred tonal profile. Levels can be adjusted to 
personal preference, enhancing enjoyment of the 
music. 
MP3
MP3 stands for MPEG Audio Layer III, the 
standard format for audio compression 
technology. MP3 can compress files to one-tenth 
of their original size because the technology 
compresses inaudible sounds found in areas of 
the spectrum beyond human hearing. 
(MPEG-1 Audio Layer-3)
LPCM
This is an abbreviation for Linear Pulse Code 
Modulation, a signal recording method used with 
music CDs. A music CD is recorded at 44.1kHz/
16 bit, but a DVD is recorded at 48kHz/16 bit ~ 
96kHz/24 bit, enabling a DVD to be played with 
higher sound quality than a music CD. 
(Linear PCM)
MPEG
This is an abbreviation for Moving Picture Experts 
Group and is pronounced “empeg”. It is the 
international standard for moving image 
compression. With DVDs, this method is also 
used to compress and record digital audio. 
Copy Control CD
This is a CD that has controls for preventing 
computers from copying and ripping (taking audio 
information recorded on a compact disc and using 
it as data to create a file). 
UDF
This is one format for use with optical discs not 
reliant on the OS. It is used with media such as 
DVDs and CD-RW discs. 
(Universal Disc Format)