JVC XV-N5SL manual Appendix B Glossary, Dts

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Appendix B: Glossary

Aspect ratio

A ratio which defines the shape of the rectangular picture in a TV. It is the width of the picture relative to the height. A conventional TV picture is 4:3 in aspect ratio.

Bitstream

The digital form of multichannel audio data (e.g., 5.1- channel) before it is decoded into its various channels.

Channel, CH

Stereo or multichannel audio consists of "channel" signals. "Stereo" audio consists of left and right channels, while 5.1-channel Dolby Digital consists of six channels (front left, front right, rear left, rear right, center and LFE (Low-Frequency Effect channel), for use with a sub-woofer).

Chapter

The smallest division on DVD VIDEO. It is a division of a title and similar to a track for Audio CD or Video CD.

Component video

Video signals with three channels of separate information that makes up the picture. There are some types of component video, such as R/G/B and Y/ CB(PB)/CR(PR).

Composite video

A single video signal commonly used in most consumer video products that contains all luminance, color, and synchronization information.

Dolby Digital (AC3)

A six-channel system consisting of left, center, right, left rear, right rear and LFE (Low-Frequency Effect channel, for use with a sub-woofer) channels. All processing is done in the digital domain.

Not all Dolby Digital discs contain six (5.1) channels of information.

Dolby Surround/Dolby Pro Logic

Dolby Surround is a five-channel system consisting of left, center, right and left rear, right rear channels. All processing is done in the digital domain.

Dolby Pro Logic is a four-channel system consisting of left, center, right and rear channels. The single rear channel is usually played through two speakers.

Downmix

Internal stereo mix of multichannel surround audio by a DVD player. The downmix signals are output from stereo output connectors.

DTS

A Digital Surround audio encoding format configured with six (5.1) channels, similar to Dolby Digital. It requires a decoder, either in the player or in an external receiver. DTS stands for Digital Theater Systems.

Not all DTS discs contain six (5.1) channels of information.

Dynamic range

The difference between the loudest and softest sounds.

Dynamic range compression

The dynamic range compression (DRC) reduces the dynamic range so that you can turn down the volume to avoid disturbing others yet still hear the detail of quiet passages.

Extension

Several letters at the end of a file name. File name extensions usually follow a period and indicate the type of information stored in the file.

Finalize

When conducting multisession recording, this means the closing of a session (fixing) by indicating the halting of writing so as to prevent the addition of any more sessions.

Fs

See "Sampling frequency."

ID3 tag

A tag embedded in an MP3 file indicating what song, artist, and album it comes from. You can edit these tags.

Interlaced scanning

In a conventional video system, a picture is shown on the display monitor in between lines of two halves. The Interlaced scanning system places lines of the second half of the picture in-between lines of the first half of the picture.

ISO 9660 Format

The most common international standard for the logical format of files and directories on a CD-ROM.

JPEG

A popular file format for still image compression and storage.

JPEG stands for Joint Photographic Experts Group. There are three sub-types of the JPEG format as follows.

•	baseline JPEG:	used for digital cameras, the
		web, etc.
• progressive JPEG: used for the web
•	lossless JPEG:	an old type, rarely used now

Letter box

A type of video display for normal (4:3) TV screens. Black bars are shown at the top and bottom of the image to allow playing of a wide-screen (16:9) movie without cutting off any of the image.

Linear PCM audio

PCM stands for "pulse code modulation." Linear PCM is the usual method for digitally encoding audio without compression, and is used for the audio tracks on DVD VIDEO discs, Audio CDs, etc.

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