Yamaha R-840 - Инструкция по эксплуатации - Страница 109

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DITIONAL 

INFO

RMA

T

ION

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AAC (Advanced Audio Coding)

An audio compression scheme defined as part of the 
MPEG-2/MPEG-4 standard. AAC supports up to 48 
channels and generally achieves better sound quality than 
MP3 at the same bit rate.

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Analog

Sound that has not been turned into numbers.
Analog sound varies, while digital sound has specific 
numerical values. These terminals send audio through two 
channels, the left and right.

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Aspect ratio

The ratio of vertical and horizontal sizes of a displayed 
image. The horizontal vs. vertical ratio of conventional 
TVs. is 4:3, and that of wide-screens is 16:9.

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Bit

Short for binary digit. Represents the smallest unit of 
information manipulated on a computer. In audio systems, 
the bit size determines resolution to digitize analog 
signals.
The larger the bit size, the larger the dynamic range (the 
ratio of maximum and minimum frequency level) and the 
finer the sounds. Generally, an audio CD is 16 bit and 
DVD audio is 24 bit.

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Bit rate

The amount of data used to hold a given length of music; 
measured in kilobits per second, or kbps. Also, the speed 
at which you record. Generally, the higher the bit rate, or 
recording speed, the better the sound quality. However, 
higher bit rates use more space on a disc.

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Component Video

Terminals for inputting or outputting a component video 
signal. Component video signal consists of three lines, the 
luminance signal (Y) and two color difference signals (P

B

/

C

B

, P

R

/C

R

), which enable to provide high-quality video.

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Disc menu

A screen display prepared for allowing selection of 
images, sounds, subtitles, multi-angles, etc. recorded on a 
DVD.

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DivX

®

DivX

®

 is a popular media technology created by DivX, 

Inc. DivX

®

 media files contain highly compressed video 

with high visual quality that maintains a relatively small 
file size. DivX

®

 files can also include advanced media 

features like menus, subtitles, and alternate audio tracks. 
Many DivX

®

 media files are available for download 

online, and you can create your own using your personal 
content and easy-to-use tools from DivX.com.

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DivX

®

 Ultra

DivX

®

 Ultra Certified products provide enhanced 

playback of advanced media features supported by the 
DivX

®

 Media Format. Key features include interactive 

video menus, subtitles, alternate audio tracks, video tags, 
and chapter points.

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DMF (DivX

®

 Media Format)

The DivX

®

 Media Format supports advanced media 

features, adding controls for an interactive media 
experience: interactive video menus, chapter points, multi-
language subtitles, and alternate audio tracks.

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Dolby Digital

Digital surround sound system which is developed by 
Dolby Laboratories provides completely independent 
multi-channel audio. With 3 front channels (left, center, 
and right) and 2 surround stereo channels, Dolby Digital 
provides five full-range audio channels. With an additional 
channel especially for bass effects (called LFE, or low 
frequency effect), the system has a total of 5.1-channels 
(LFE is counted as 0.1 channel). By using 2-channel 
stereo for the surround speakers, more accurate moving 
sound effects and surround sound environment are 
possible than with Dolby Surround.

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Dolby Pro Logic II

It is an improved matrix decoding technology that 
provides better spatiality and directionality on Dolby 
Surround programmed material; provides a convincing 
three-dimensional soundfield on conventional stereo 
music recordings; and is ideally suited to bring the 
surround experience to automotive sound. While 
conventional surround programming is fully compatible 
with Dolby Pro Logic II decoders, soundtracks will be 
able to be encoded specifically to take full advantage of 
Pro Logic II playback, including separate left and right 
surround channels. (Such material is also compatible with 
conventional Pro Logic decoders).

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DTS (Digital Theater Systems)

Digital surround sound system developed by Digital 
Theater Systems, Inc., which provides 5.1 channel audio 
(max). With an abundance of audio data, it is able to 
provide authentic-sounding effects.

GLOSSARY