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Glossary
Nero Linux Express 35
13 Glossary
AIFF
The Audio Interchange File Format is an uncompressed audio file format from Apple® and
represents a sort of counterpart to the WAV format from Microsoft. Files are larger than
when using a compressed format, but the quality is higher. AIFF compressed is the com-
pressed variation.
Audio CD
An Audio CD can contain up to 74 minutes of audio sequences and individual tracks in hi-fi
quality. The storage capacity is 747 MB at a sample depth of 16 bit and a scan rate of 44.1
kHz.
Block
A block refers to the smallest information unit on a CD-ROM or hard drive that is address-
able in one access and that is indicated in bits or bytes. Several blocks are combined into a
sector.
Book Type
The book type defines the specification (e.g. DVD-, DVD+, DVD-ROM) of a DVD. In order to
ensure correct playback, the DVD specifications are defined in books so that all media can
be read correctly. The specifications are defined in the so-called Rainbow Books, which are
distinguished by means of their color (e.g. Yellow Book).
Buffer Underrun
A buffer underrun is an interruption in the data flow in the internal memory (e.g. of the re-
corder). A buffer underrun results from an interruption in the data flow to the internal buffer.
The buffer continues to deliver data until it is finally empty. When recording, data is fed con-
tinuously to the recorder's buffer in order to keep a steady flow of data. If the steady flow of
data is interrupted, the media becomes unusable. Most modern recorders have a protective
mechanism against buffer underruns.
CD-R
Compact Disc-Recordable is a technology for write-once media. The Orange Book standard
defines the storage of audio data and other computer-readable data.
Disc-At-Once
Disc-At-Once refers to a method in which the laser in your recorder burns straight through in
one session without turning off and on between each track. This method is best when re-
cording Audio CDs you would like to play in your home or car stereo.
Image
An image refers to a single file on the hard drive that contains the image of a complete disc.
A disc image can be used to create exact copies on media at a later point in time if problems
occur during the write process or if no recorder is connected to your PC. The image requires
as much free space on the hard drive as the contents of the original disc take up.