Xoro HSD 8430, Руководство пользователя

Страница: 95 / 243

45
Engl
ish
GLOSSARY
Dolby Digital
®
5.1
Dolby Digital
®
5.1 is a system for transmission and storage of 5.1 channel sound on digital
media as DVD, digital TV and satellite transmission. Different from the codecs Dolby Sur-
round
®
and Pro Logic
®
who do not work with channel separation to encode the surround
sound in a stereo recording, Dolby Digital
®
is a discrete system where the different audio
channels keep completely separated during encoding and decoding. Dolby Digital 5.1 is
industry standard for coding of DVD movies with surround sound.
DSP
Digital Signal Processor. Microprocessor for digital processing of signals. Virtual Surround
for example is created with a DSP.
DTS
®
DTS
®
is a coding standard similar to Dolby Digital
®
. DTS Digital Surround
®
is a multichannel
surround system from Digital Theater Systems. Similar to Dolby Digital
®
it uses up to 5.1
channels. Different from Dolby, the data rate can be far above 1 Mbit/sec so the sound is not
compresses as strong as in Dolby Digital
®
resulting in a higher sound quality.
The frequency range is from 20Hz to 20kHz at 20Bit, but the subwoofer channels only trans-
mits frequencies below 80Hz. The coding system also is called CAC.
DVD
The DVD (Digital Versatile Disk) was introduced in 1995 and is a storage media with a large
capacity.
While a standard CD can store 650 MB of data, the DVD can store up to 9 GB. Especially
when it comes to video playback, a large storage capacity is important. Beyond its high ca-
pacity, the consumer enjoys high quality video and audio. A DVD can store up to 8 different
audiostreams, so in best case, the movie can be watched in 8 different languages
Photo-CD (JPEG CD)
A Photo-CD is a storage system for image storage on a CD-ROM in a platform independent
multi resolution structure (support of different resolutions and file formats, e.g. JPEG, BMP,
etc). As a single camera film dies not fill a complete CD, more films can be added to the CD
at a later time. A CD-ROM drive must be multisession enabled to load images from a Photo-
CD.
GUI
Graphic User Interface. See OSD
HDCD
Pacific Microsonics has developed a digital audio technology using the full potential of a CD.
The HDCD process (High Definition Compatible Digital) is a patented coding and decoding
process transporting the complete details of a high resolution “master recording” to a CD.
There were several attempts to improve the sound quality of CD’s, but none which could be
compared to HDCD process.