Yamaha HTR-6080 - Manual (Page 106)

Glossary
■ Bl-ampllficatlon connection
A bi-amplification connection uses two amplifiers for a
speaker. One amplifier is connected to the woofer section
of a loudspeaker while the other is connected to the
combined mid and tweeter section. With this arrangement
each amplifier operates over a restricted frequency range.
This restricted range presents each amplifier with a much
simpler job and each amplifier is less likely to influence
the sound in some way. The internal crossover of the
speaker consists of a LPF (low pass filter) and a HPF (high
pass filter). As its name implies, the LPF passes
frequencies below a cutoff and rejects frequencies above
the cutoff frequency. Likewise, the HPF passes
frequencies above its cutoff.
■ Component video signal
With the component video signal system, the video signal
is separated into the Y signal for the luminance and the P
b
and P r signals for the 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
is composed of 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.
■ Dolby Digital
Dolby Digital is a digital surround sound system that gives
you completely independent multi-channel audio. With 3
front channels (front L/R and center), 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 ,3.1-channels (LFE is counted as f). 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. The wide dynamic range from maximum to
minimum volume reproduced by the 5 full-range channels
and the precise sound orientation generated using digital
sound processing provide listeners with unprecedented
excitement and realism. With this unit, any sound
environment from monaural up to a 5.1-channel
configuration can be freely selected for your enjoyment.
■ Dolby Digital EX
Dolby Digital EX creates 6 full-bandwidth output
channels from 5.1-channel sources. This is done using a
matrix decoder that derives 3 surround channels from the
2 in the original recording. For the best results, Dolby
Digital EX should be used with movie sound tracks
recorded with Dolby Digital Surround EX. With this
additional channel, you can experience more dynamic and
realistic moving sound especially with scenes with
“fly-over” and “fly-around” effects.
■ Dolby Pro Logic II
Dolby Pro Logic 11 is an improved technique used to
decode vast numbers of existing Dolby Surround sources.
This new technology enables a discrete 5-channel
playback with 2 front left and right channels, 1 center
channel, and 2 surround left and right channels instead of
only 1 surround channel for conventional Pro Logic
technology. There are three modes available: “Music
mode” for music sources, “Movie mode” for movie
sources and “Game mode” for game sources.
■ Dolby Pro Logic llx
Dolby Pro Logic llx is a new technology enabling discrete
multi-channel playback from 2-channel or multi-channel
sources. There are three modes available: “Music mode”
for music sources, “IVlovie mode” for movie sources (for
2-channel sources only) and “Game mode” for game
sources.
■ Dolby Surround
Dolby Surround uses a 4-channel analog recording system
to reproduce realistic and dynamic sound effects: 2 front
left and right channels (stereo), a center channel for dialog
(monaural), and a surround channel for special sound
effects (monaural). The surround channel reproduces
sound within a narrow frequency range. Dolby Surround is
widely used with nearly all video tapes and laser discs,
and in many f’V and cable broadcasts as well. The Dolby
Pro Logic decoder built into this unit employs a digital
signal processing system that automatically stabilizes the
volume on each channel to enhance moving sound effects
and directionality.
■ 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.
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