Pioneer Industrial DV-470 operating instructions 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

1disc 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
(Exchangeabl	Film for digital still cameras. Digital
e Image File)	cameras from various manuafcturers
	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.
JPEG	A standard file format used for still
	images. JPEG files are identified by the
	file extension “.jpg”.

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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
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 39 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 Surround” are registered trademarks of Digital Theater Systems, Inc.

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