Pioneer S-HTD340 operating instructions Additional information Glossary, Dolby Digital

12Additional information

Glossary

Analog audio	Direct representation of sound by an
	electrical signal. See also Digital audio.
Aspect ratio	The width of a TV screen relative to its
	height. Conventional TVs are 4:3;
	widescreen models are 16:9.
Digital audio	Indirect representation of sound using
	numbers. See also Sampling frequency
	and Analog audio.
Dolby Digital	A multichannel audio encoding
	system developed by Dolby
	Laboratories that enables far more
	audio to be stored on a disc than PCM
	encoding. See also PCM (Pulse Code
	Modulation).
DRM	DRM (digital rights management) is a
	technology designed to prevent
	unauthorized copying by restricting
	playback of material on devices other
	than the PC used to record it. For
	detailed information, please see the
	instruction manuals or help files that
	came with your PC and WMA
	recording software.
DTS	A multichannel audio encoding
	system developed by Digital Theater
	Systems that enables far more audio
	to be stored on a disc than PCM
	encoding. See also PCM (Pulse Code
	Modulation).
Dynamic	The difference between the quietest
range	and loudest sounds possible in an
	audio signal.
EXIF	A file format developed by Fuji Photo
(Exchangeable	Film for digital still cameras. Digital
Image File)	cameras from various manufacturers
	use this compressed file format which
	carries date, time and thumbnail
	information, as well as the picture
	data.
File	A tag added to the end of a filename to
extension	indicate the type of file. For example,
	“.mp3” indicates an MP3 file.
ISO 9660	International standard for the volume
format	and file structure of CD-ROM discs.

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JPEG	A standard file format used for still
	images. JPEG files are identified by the
	file extension “.jpg”.
MP3	MP3 (MPEG1 audio layer 3) is a
	compressed stereo audio file format.
	Files are recognized by their file
	extension “.mp3”.
MPEG audio	An audio format used on Video CDs
	and some DVD discs.
MPEG video	A video format used on Video CDs and
	some DVD discs.
PBC	A system of navigating a Video CD
(PlayBack	through on-screen menus recorded
Control)	onto the disc.
PCM	Digital audio encoding system found
(Pulse Code	on CDs. Good quality, but requires a lot
Modulation)	of data compared to Dolby Digital, DTS
	and MPEG encoded audio. See also
	Digital audio.
Progressive	All the lines that make up a video
scan video	picture are updated in one pass
	(compared to interlace which takes
	two passes to update the whole
	picture).
Regions	These associate DVD-Video discs and
	players with particular areas of the
	world. See DVD Video regions on
	page 68 for more information.
Sampling	The rate at which sound is measured
frequency	to be turned into digital audio data.
	The higher the rate, the better the
	sound quality. CD is 44.1 kHz; DVD can
	be up to 96 kHz. See also Digital audio.
WMA	WMA is short for Windows Media
	Audio and refers to an audio
	compression technology developed by
	Microsoft Corporation. Files are
	recognized by their file extension
	“.wma”.

Manufactured under license from Dolby Laboratories.“Dolby”, “Pro Logic” and the double- D symbol are trademarks of Dolby Laboratories.

“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.

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