Yamaha RX-E810 - Инструкция по эксплуатации - Страница 69

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DITIONAL 

INFO

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ION

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Dolby Digital

Dolby Digital is a digital surround sound system that gives 
you completely independent multi-channel audio. With 3 
front channels (left, center, and right), and 2 surround 
stereo channels, Dolby Digital provides 5 full-range audio 
channels. With an additional channel especially for bass 
effects, called LFE (low frequency effect), the system has 
a total of 5.1-channels (LFE is counted as 0.1 channel). 
The receiver downmixes the multi-channel audio to 2 
channel so that you can enjoy Dolby Digital sources 
easily.

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MP3 (MPEG Audio Layer-3)

One of the audio compression methods used by MPEG. It 
employs the irreversible compression method, which 
achieves a high compression rate by thinning out the data 
of hardly audible part to the human ears. It is said to be 
capable of compressing the data quantity by about 1/11 
(128 kbps) while maintaining a similar audio quality to 
music CD.

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PCM (Pulse Code Modulation)

A signal that is changed to digital format without 
compression. A CD is recorded with 16-bit sound at 
44.1 kHz, while DVD recording is anywhere from 16 bits 
at 48 kHz to 24 bits at 192 kHz, which makes it a higher 
quality sound than CD. This signal also has a type called 
Packed PCM (PPCM) that can be compressed without any 
loss of data.

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Sampling frequency

The number of sampling (process for digitalizing analog 
signals) per second. In principle, the higher the sampling 
rate, the wider the frequency range that can be played 
back, and the higher the quantized bit rate, the finer the 
sound that can be reproduced.

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Title, Chapter (DVD)

DVD video lets you divide a disc in a big way by titles or a 
small way by chapters. Each division is either called a title 
number or a chapter number.

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Track (CD/Video CD/Super Video CD)

A CD, VCD or SVCD can be divided into a number of 
segments (tracks). Each division is called a track number.

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WMA (Windows Media Audio)

An audio compression method developed by Microsoft 
Corporation. It employs the irreversible compression 
method, which achieves a high compression rate by 
thinning out the data of hardly audible part to the human 
ears. It is said to be capable of compressing the data 
quantity by about 1/22 (64 kbps) while maintaining a 
similar audio quality to music CD.

Glossary

Audio information