Yamaha RX-V571 Owner's Manual page 88

Audio information
Audio and video synchronization (lip sync)
Lip sync, an abbreviation for lip synchronization, is a technical term that involves both a problem,
and the capability of maintaining audio and video signals synchronized during post-production and
transmission.
Whereas the audio and video latency requires complex end-user adjustment, HDMI version 1.3
incorporates an automatic audio and video syncing capability that allows devices to perform this
synchronization automatically and accurately without user interaction.
Bi-amplification 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.
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.
CINEMA DSP 3D
The actually measured sound field data contain the information of the height of the sound images.
CINEMA DSP 3D feature achieves the reproduction of the accurate height of the sound images so
that it creates the accurate and intensive stereoscopic sound fields in a listening room.
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 Iowfrequency bass, providing improved performance for the overall sound system.
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,
referred to as LFE (Low-Frequency Effect), the system has a total of 5.1-channels (LFE is counted as
0.1 channel). By using 2-channel stereo for the surround speakers, more accurate moving sound
effects and surround sound environments are possible than with Dolby Surround. The wide dynamic
range from maximum to minimum volumes that are reproduced by the 5 full-range channels, and the
precise sound orientation generated using digital sound processing provides 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 Pro Logic ][][
Dolby Pro Logic ][][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 ][]x
Dolby Pro Logic ][Ix is a new technology enabling discrete multichannel playback from 2-channel or
multi-channel sources. There are three modes available: "Music mode" for music sources, "Movie
mode" for movie sources 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, as well as in many TV and cable broadcasts. 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.
Dolby TrueHD
Dolby TrueHD is an advanced Iossless audio technology developed for high-definition disc-based
media including Blu-ray Disc. Selected as an optional audio standard for Blu-ray Disc, this
technology delivers sound that is bit-for-bit identical to the studio master, offering a high-definition
home theater experience. Supporting bitrates up to 18.0 Mbps, Dolby TrueHD can carry up to 8
discrete channels of 24-bit/96 kHz audio simultaneously. Dolby TrueHD also remains fully compatible
with the existing multichannel audio systems and retains the metadata capability of Dolby Digital,
allowing dialog normalization and dynamic range control.
DTS 96/24
DTS 96/24 offers an unprecedented level of audio quality for multichannel sound on DVD video, and
is fully backward-compatible with all DTS decoders. "96" refers to a 96 kHz sampling rate compared
to the typical 48 kHz sampling rate. "24" refers to 24-bit word length. DTS 96/24 offers sound quality
transparent to the original 96/24 master, and 96/24 5.1-channel sound with full-quality full-motion
video for music programs and motion picture soundtracks on DVD video.
DTS Digital Surround
DTS Digital Surround was developed to replace the analog soundtracks of movies with a 5.1-
channel digital sound track, and is now rapidly gaining popularity in movie theaters around the
world. DTS, Inc. has developed a home theater system so that you can enjoy the depth of sound and
natural spatial representation of DTS Digital Surround in your home. This system produces
practically distortion-free 5.1-channel sound (technically, left, right and center channels, 2 surround
channels, plus an LFE 0.1 channel as a subwoofer, for a total of 5.1-channels).
DTS Express
This is an audio format for next-generation optical discs such as Blu-ray discs. It uses optimized low
bit rate signals for network streaming. In the case of a Blu-ray disc, this format is used with
secondary audio, enabling you to enjoy the commentary of the movie producer via the Internet while
playing the main program.
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