Yamaha RX-V1600 用户手册

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页码 123
111
GLOSSARY
ADDITIONA
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INF
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English
■ Neo:6
Neo:6 decodes conventional 2-channel sources for 
6 channel playback by. It enables playback with the full-
range channels with higher separation comparable to 
digital discrete signal playback. Two modes are available; 
Music mode for playing music sources and Cinema mode 
for movies.
■ 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 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.
■ THX Cinema processing
THX is an exclusive set of standards and technologies 
established by the world-renowned film production 
company, Lucasfilm Ltd. THX grew from George Lucas’ 
personal desire to make your experience of the film 
soundtrack, in both movie theaters and in your home 
theater, as faithful as possible to what the director 
intended.
Movie soundtracks are mixed in special movie theaters 
called dubbing stages and are designed to be played back 
in movie theaters with similar equipment and conditions. 
This same soundtrack is then transferred directly onto 
Laserdisc, VHS tape, DVD, etc., and is not changed for 
playback in a small home theater environment.
THX engineers developed patented technologies to 
accurately translate the sound from the movie theater 
environment into the home, correcting the tonal and 
spatial errors that occur. On this product, when the THX 
indicator is on, THX features are automatically added in 
Cinema modes (e.g. THX Cinema, THX Surround EX).
Adaptive decorrelation 
In a movie theater, a large number of surround speakers 
help create an enveloping surround sound experience, but 
in a home theater there are usually only two speakers. This 
can make the surround speakers sound like headphones 
that lack spaciousness and envelopment. The surround 
sounds will also collapse into the closest speaker as you 
move away from the middle seating position. Adaptive 
decorrelation slightly changes one surround channel's time 
and phase relationship with respect to the other surround 
channel. This expands the listening position and 
creates – with only two speakers – the same spacious 
surround experience as in a movie theater.
Re-equalization 
The tonal balance of a film soundtrack will be excessively 
bright and harsh when played back over audio equipment 
in the home because film soundtracks were designed to be 
played back in large movie theaters using very different 
professional equipment. Re-equalization restores the 
correct tonal balance for watching a movie soundtrack in a 
small home environment.
Timbre matching
The human ear changes our perception of sound 
depending on the direction from which it is coming. In a 
movie theater, there is an array of surround speakers so 
that the surround information is all around you. In a home 
theater, you use only two speakers located to the side of 
your head. The timbre matching feature filters the 
information going to the surround speakers so that they 
more closely match the tonal characteristics of the sound 
coming from the front speakers. This ensures seamless 
panning between the front and surround speakers.