Yamaha RX-V463 - Инструкция по эксплуатации - Страница 84

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 En

Glossary

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HDMI

HDMI (High-Definition Multimedia Interface) is the first 
industry-supported, uncompressed, all-digital audio/video 
interface. Providing an interface between any source (such 
as a set-top box or AV receiver) and an audio/video 
monitor (such as a digital television), HDMI supports 
standard, enhanced or high-definition video as well as 
multi-channel digital audio using a single cable. HDMI 
transmits all ATSC HDTV standards and supports 8-
channel digital audio, with bandwidth to spare to 
accommodate future enhancements and requirements.
When used in combination with HDCP (High-bandwidth 
Digital Content Protection), HDMI provides a secure 
audio/video interface that meets the security requirements 
of content providers and system operators. For further 
information on HDMI, visit the HDMI website at 
“http://www.hdmi.org/”.

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LFE 0.1 channel

This channel reproduces low-frequency signals. The 
frequency range of this channel is from 20 Hz to 120 Hz. 
This channel is counted as 0.1 because it only enforces a 
low-frequency range compared to the full-range 
reproduced by the other 5 channels in Dolby Digital or 
DTS 5.1-channel systems.

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MP3

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 (Linear PCM)

Linear PCM is a signal format under which an analog 
audio signal is digitized, recorded and transmitted without 
using any compression. This is used as a method of 
recording CDs and DVD audio. The PCM system uses a 
technique for sampling the size of the analog signal per 
very small unit of time. Standing for “Pulse Code 
Modulation”, the analog signal is encoded as pulses and 
then modulated for recording.

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Sampling frequency and number of 
quantized bits

When digitizing an analog audio signal, the number of 
times the signal is sampled per second is called the 
sampling frequency, while the degree of fineness when 
converting the sound level into a numeric value is called 
the number of quantized bits. The range of rates that can 
be played back is determined based on the sampling rate, 
while the dynamic range representing the sound level 
difference is determined by the number of quantized bits. 
In principle, the higher the sampling frequency, the wider 
the range of frequencies that can be played back, and the 
higher the number of quantized bits, the more finely the 
sound level can be reproduced.

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SILENT CINEMA

Yamaha has developed a natural, realistic sound effect 
DSP algorithm for headphones. Parameters for 
headphones have been set for each sound field so that 
accurate representations of all the sound field programs 
can be enjoyed on headphones.

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Virtual CINEMA DSP

Yamaha has developed a Virtual CINEMA DSP algorithm 
that allows you to enjoy DSP sound field surround effects 
even without any surround speakers by using virtual 
surround speakers. It is even possible to enjoy Virtual 
CINEMA DSP using a minimal two-speaker system that 
does not include a center speaker.

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WAV

Windows standard audio file format, which defines the 
method of recording the digital data obtained by 
converting audio signals. It does not specify the 
compression (coding) method so a desired compression 
method can be used with it. By default, it is compatible 
with the PCM method (no compression) and some 
compression methods including the ADPCM method.

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WMA

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.