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APPENDIX
Glossary
DSD
Direct Stream Digital (DSD) technology stores audio signals on digital
storage media, such as Super Audio CDs. Using DSD, signals are stored as
single bit values at a high-frequency sampling rate of 2.8224 MHz, while
noise shaping and oversampling are used to reduce distortion, a common
occurrence with very high quantization of audio signals. Due to the high
sampling rate, better audio quality can be achieved than that offered by the
PCM format used for normal audio CDs. The frequency is equal to or
higher than 100 kHz, with a dynamic range of 120 dB. This unit can
transmit or receive DSD signals via the HDMI jack.
LFE 0.1 channel
This channel reproduces low-frequency bass signals, and has a frequency
range 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.
Neo:6
Neo:6 decodes the conventional 2-channel sources for 6-channel playback
by the specific decoder. It enables playback with the full-range channels
with higher separation just like digital discrete signal playback. There are
two modes available: “Music mode” for music sources and “Cinema mode”
for movie sources.
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.
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
accuracy 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, whereas 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 accurately the sound level can be reproduced.
Sound field program information
CINEMA DSP
Since the Dolby Surround and DTS systems were originally designed for
use in movie theaters, their effect is best felt in a theater having many
speakers designed for acoustic effects. Since home conditions, such as
room size, wall material, number of speakers, and so on, can differ so
widely, it is inevitable that there are differences in the sound that is heard.
Based on a wealth of actually measured data, Yamaha CINEMA DSP uses
Yamaha’s original DSP technology to combine Dolby Pro Logic, Dolby
Digital, and DTS systems to provide the audiovisual experience of a movie
theater in the listening room of your own home.
Compressed music enhancer
The Compressed music enhancer feature of this unit enhances your
listening experience by regenerating the missing harmonics in compression
artifacts. As a result, it compensates for flattened complexity due to the loss
of high-frequency fidelity as well as lack of bass due to the loss of low-
frequency bass, providing improved performance for the overall sound
system.
SILENT CINEMA
Yamaha has developed a natural, realistic sound effect DSP algorithm for
headphones. Parameters for headphones have been set for each sound field
program, so that accurate representations of all the sound field programs
can be enjoyed on headphones.
Virtual CINEMA DSP
Yamaha has developed a Virtual CINEMA DSP algorithm that allows you
to enjoy DSP 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.
Video information
Component video signal
With the component video signal system, the video signal is separated into
the Y signal for luminance and the P
B and PR signals for chrominance.
Color can be reproduced more faithfully with this system because each of
these signals is independent. The component signal is also called the “color
difference signal” because the luminance signal is subtracted from the color
signal. A monitor with component input jacks is required in order to output
component signals.
Composite video signal
With the composite video signal system, the video signal comprises the
three basic elements of a video picture: color, brightness and
synchronization data. A composite video jack on a video component
transmits these three elements combined.
Deep Color
Deep Color refers to the use of various color depths in displays, up from the
24-bit depths in previous versions of the HDMI specification. This extra bit
depth allows HDTVs and other displays increase from millions of colors to
billions of colors and eliminate on-screen color banding for smooth tonal
transitions and subtle gradations between colors. The increased contrast
ratio can represent many times more shades of gray between black and
white. Additionally, Deep Color increases the number of available colors
within the boundaries defined by the RGB or YCbCr color space.
HDMI
HDMI (High-Definition Multimedia Interface) is the first industry
supported, uncompressed, all-digital audio/video interface. Providing an
interface between any sources (such as set-top boxes or AV receivers) and
audio/video monitors (such as digital televisions), HDMI supports
standard, enhanced or high-definition video as well as multichannel 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/.”
“x.v.Color”
A color space standard supported by HDMI version 1.3. It is a more
extensive color space than sRGB, and allows the expression of colors that
were not hitherto possible. While remaining compatible with the color
gamut of sRGB standards, “x.v.Color” expands the color space, and can
thus produce more vivid, natural images. It is particularly effective for still
pictures and computer graphics.
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