7Additional Information
Glossary
Analog audio
An electrical signal that directly represents sound. Compare this to digital audio which can be an electrical signal, but is an indirect representation of sound. See also Digital audio.
Aspect ratio
The width of a TV screen relative to its height. Conventional TVs are 4:3 (in other words, the screen is almost square); widescreen models are 16:9 (the screen is almost twice as wide as it is high).
Bonus Group (DVD-Audio only)
An ‘extra’ group on some
Browsable pictures (DVD-Audio only)
A feature of some
Chapter (DVD-Video, DVD-RW)
Just as a book is split up into several chapters, a title on a DVD disc is usually divided into chapters. See also Title.
Digital audio
An indirect representation of sound by numbers. During recording, the sound is measured at discrete intervals (44,100 times a second for CD audio) by an
Dolby Digital
1
Using a maximum of 5.1 channels of audio, this high quality surround system is used in many of the finer movie theaters around the world.
DTS
R
DTS stands for Digital Theater System. DTS is a surround system different from Dolby Digital that has become a popular surround sound format for movies.
Dynamic range
The difference between the quietest and loudest sounds possible in an audio signal (without distorting or getting lost in noise). Dolby Digital and DTS soundtracks are capable of a very wide dynamic range, delivering dramatic
File extension
A tag added to the end of a filename to indicate the type of file. For example, “.mp3” indicates an MP3 file.
Group (DVD-Audio only)
A collection of tracks on a
HDCP
HDCP is the acronym for
It is an encrypting method for
HDMI
HDMI
HDMI terminals can simultaneously transmit uncompressed digital images and the digital audio signals of Dolby Digital DTS, Linear PCM, etc.
Interlaced video
A method of displaying a picture in which odd- numbered lines are updated in one pass, then
MP3
MP3 (MPEG1 audio layer 3) is a compressed audio file format. Files are recognized by their file extension “.mp3” or “.MP3”.
MPEG audio
An audio format used on Video CDs and some DVD discs. This unit can convert MPEG audio to PCM format for wider compatibility with digital recorders and AV amplifiers. See also PCM.
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