Yamaha RX-V571 Owner's Manual download pdf (Page 88)

En 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 lowfrequency 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 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 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 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.

Glossary

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