Bedienungsanleitung Onkyo dv sp 501 (Seite 56 von 60) (Englisch)

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Glossary

Analog audio

An electrical signal that directly represents sound. Com-

pare this to digital audio which can be an electrical sig-

nal, but is an indirect representation of sound. See also

“Digital audio”.

Aspect ratio

The width of a TV screen relative to its height. Conven-

tional 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).

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 analog-to-

digital converter, generating a stream of numbers.

On playback, a digital-to-analog converter generates an

analog signal based on these numbers. See also “Sam-

pling frequency” and “Analog audio”.

Dolby Digital

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.

The on-screen display shows which channels are active,

for example showing 3/2.1. The 3 being the two front

channels and the center channel; the 2 being the surround

channels, and the .1 being the LFE channel.

DRM

DRM (digital rights management) is a type of server

software developed to enable secure distribution of paid

content over the web, recently incorporated by WMA

(Windows Media Audio ).

DTS

DTS stands for Digital Theater Systems. 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 cinema-like

effects.

EXIF (Exchangeable Image File)

A ﬁle format developed by Fuji Photo Film for digital

still cameras. Digital cameras from various manuafctur-

ers 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 format

International standard for the volume and ﬁle structure

of CD-ROM discs.

JPEG

A ﬁle format used for still images, such as photographs

and illustrations. JPEG ﬁles are identiﬁed by the ﬁle

extension “.jpg” or “.JPG”. Most digital cameras use this

format.

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 (Pulse Code Modulation)”.

MPEG video

The video format used for Video CDs and DVDs. Video

CD uses the older MPEG-1 standard, while DVD uses

the newer and much better quality MPEG-2 standard.

PBC (PlayBack Control) (Video CD only)

A system of navigating a Video CD through on-screen

menus recorded onto the disc. Especially good for discs

that you would normally not watch from beginning to

end all at once—karaoke discs, for example.

PCM (Pulse Code Modulation)

The most common system of encoding digital audio,

found on CDs and DAT. Excellent quality, but requires a

lot of data compared to formats such as Dolby Digital

and MPEG audio. For compatibility with digital audio

recorders (CD, MD and DAT) and AV ampliﬁers with

digital inputs, this unit can convert Dolby Digital, DTS

and MPEG audio to PCM. See also “Digital audio”.

Regions (DVD-Video only)

These associate discs and players with particular areas of

the world. This unit will only play discs that have com-

patible region codes. You can ﬁnd the region code of

your unit by looking on the rear panel. Some discs are

compatible with more than one region (or all regions).

Sampling frequency

The rate at which sound is measured to be turned into

digital audio data. The higher the rate, the better the

sound quality, but the more digital information is gener-

ated. Standard CD audio has a sampling frequency of

44.1kHz, which means 44,100 samples (measurements)

per second. See also “Digital audio”.

WMA

WMA is short for Windows Media Audio and refers to

an audio compression technology developed by

Microsoft Corporation. WMA data can be encoded by

using Windows Media Player version 8 or Windows

Media Player for Windows XP.

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