Yamaha DVD-S559 owner manual Additional information Glossary, Digital *1

08Additional 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	A multi-channel audio encoding system
Digital*1	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 WMA)	DRM (Digital Rights Management) copy
	protection is a technology designed to
	prevent unauthorized copying by
	restricting playback, etc. of material on
	devices other the PC (or other WMA
	recording equipment) used to record it.
	For detailed information, please see the
	instruction manuals or help files that
	came with your PC (or other WMA
	recording equipment) and/or software.
DTS*2	A multi-channel 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).
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 extension	A tag added to the end of a filename to
	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.
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 CD/
	Super VCDs and some DVD discs.
PBC	A system of navigating a Video CD/
(PlayBack	Super VCD through on-screen menus
Control)	recorded onto the disc.
PCM	Digital audio encoding system found on
(Pulse Code	CDs. Good quality, but requires a lot of
Modulation)	data compared to Dolby Digital, DTS
	and MPEG encoded audio. See also
	Digital audio.
Progressive	All the lines that make up a video picture
scan video	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 37 for more information.
Sampling	The rate at which sound is measured to
frequency	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”.
	Microsoft, Windows Media, and the
	Windows logo are trademarks, or
	registered trademarks of Microsoft
	Corporation in the United States and/or
	other countries.

*1 Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.

*2 “DTS” and “DTS Digital Out” are registered trademarks of Digital Theater Systems, Inc.

39

En