GLOSSARY

Bitstream

In this manual, “bitstream” refers to the digital form of multiple channel audio data (e.g., 5.1 channel audio) before it is decoded into its various channels.

CINEMA DSP

The Dolby Surround and DTS systems were originally designed for use in movie theaters, and theaters remain the premiere listening experience—especially movie theaters with complex speaker and sound systems, optimized for acoustics and special effects.

There is a great variety in the sound quality of listening environments in homes, due to variables such as room size, wall material, number of speakers, etc.

A result of extensive research, YAMAHA CINEMA DSP utilizes YAMAHA original sound field technology to combine three systems—Dolby Pro Logic, Dolby Digital and DTS—to create a theater-quality visual and audio experience in your home.

Decoder

A device or program that translates (decodes) encoded data on DVDs into an appropriate format.

Dolby Digital

A method for coding digital signals developed by Dolby Laboratories. In addition to stereo (2-channel) audio, Dolby Digital signals can also be 5.1-channel audio. A large amount of audio information can be recorded on one disc using this method.

Dolby Pro Logic

A surround system in which a 4-channel audio track is recorded as two channels, then restored to four channels for playback. The surround channel is monaural and can reproduce up to 7 kHz.

Dolby Pro Logic II

Dolby Pro Logic II is an improved technique for decoding data that was encoded by Dolby Surround software. This new technology enables discrete 5-channel playback with 2 front channels, 1 center channel, and 2 rear channels (instead of only 1 rear channel as with conventional Pro Logic technology). A music mode is also available for 2- channel sources in addition to the movie mode.

Frames

Moving pictures are composed of a sequence of still images called frames. About 30 frames are shown each second (30fps). Each frame is composed of two interlaced fields. A television displays these fields in rapid succession to create frames.

Frame stills and field stills

A frame still is an image composed of two alternating fields. Edges may be slightly blurry, but the overall image quality is high.

A field still is an image composed from only one of the two fields. The picture is not blurry, but contains only half of the visual information of a frame still.

Group DVD-A

A DVD audio disc is divided into large sections called “groups” and smaller sections called “tracks.” The numbers allocated to these sections are called “group num- bers” and “track numbers.”

Interlaced and progressive output

NTSC, the video signal standard, uses 525 interlaced (i) scan lines. Progressive scanning uses twice that number of scan lines and is called 525p. The 525i video signals output from the unit’s COMPONENT VIDEO OUT jacks (Y, PB, PR) allow you to enjoy higher quality pictures than if the signals were output from the video output jack or S VIDEO OUT jack. The COMPONENT VIDEO OUT jacks are also able to handle 525p (progressive) video sig- nals, which are of even greater resolution.

LFE 0.1 channel

This channel reproduces low bass signals in the frequency range of 20 Hz to 120 Hz. This channel is counted as 0.1 because it generates only a low frequency range relative to the full-range reproduced by the other five channels in a Dolby Digital or DTS 5.1 system.

PCM

Pulse Code Modulation (PCM) converts analog waves into digital signals. It is commonly used in the creation of music CDs. DVDs allow greater volume, and hence use linear PCM, which has a higher sampling rate. Compressed PCM signals are called packed PCM (PPCM).

Matrix 6.1

The unit incorporates a Matrix 6.1 decoder for Dolby Digital and DTS multi-channel software that enables 6.1- channel reproduction by adding a rear center channel to an existing 5.1-channel format. (The rear center channel is created from rear left and right channels, and output from a virtual rear center speaker.) With this additional channel, you can experience more dynamic and realistic moving sounds, especially in scenes with “fly-over” and “fly- around” effects.

APPENDIX

English

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