Glossary; Audio Information - Yamaha RX-A2010 Owner's Manual

Glossary

Audio information

Audio and video synchronization (Lipsync)
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 (Bi-amp)
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 low-frequency 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 Digital Plus
Dolby Digital Plus is an advanced audio technology developed for highdefinition programming and BD (Blu-ray disc).
Selected as an optional audio standard for BD, this technology delivers multichannel sound with discrete channel
output. Supporting bitrates up to 6.0 Mbps, Dolby Digital Plus can carry up to 7.1 discreet audio channels
simultaneously. Supported by HDMI version 1.3 and designed for the optical disc players and AV receivers/amplifiers of
the future, Dolby Digital Plus also remains fully compatible with the existing multichannel audio systems that incorporate
Dolby Digital.
Dolby Pro Logic II
Dolby Pro Logic II 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 IIx
Dolby Pro Logic IIx 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 (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, 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 lossless audio technology developed for high-definition disc-based media including Blu-
ray Disc. Selected as an optional audio standard for BD (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.
146
En