User manual

Glossary

Nero Express

17 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.

Archive Bit

Archive bits are used to identify files that have been edited. A file is only resaved during the

next backup process if it was edited (and an archive bit is thus reset).

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.

AVCHD

AVCHD is an HD capturing format for camcorders. It is used for DVDs but compatible to Blu-

ray Discs.

Block

A block refers to the smallest information unit on a CD-ROM or hard drive that is addressa-

ble 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

A buffer refers to temporary memory that records and delivers data that cannot be processed

immediately as required. The buffer also allows for continuous data flow.

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.