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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)
