Cambridge Audio 540D Bedienungsanleitung PDF herunterladen (Seite 11)

540D V2azur

ENGLISH

Dolby Digital EX

Also known as DD (3/3) or DD 6.1, this is an enhanced form of Dolby

Digital. In addition to the discretely encoded 5.1 channels, DD EX

provides an extra sixth channel (Surround Back, giving 6.1 or 7.1 with

mono rear surrounds) matrix encoded into the rear surrounds. Decoding

Dolby Digital EX requires a Dolby Digital EX-encoded DVD disc and a

digital connection from the 540D V2 to a suitable AV receiver that can

decode this format (the 540D V2 itself cannot decode DD EX). If a DD

EX-encoded disc is played on the 540D V2, 5.1 output will still be

created as DD EX is backwards compatible with DD 5.1 decoding. The

sixth Surround Back signal will be present in both Left and Right Rear

Surrounds (forming a phantom rear centre).

DTS 5.1, DTS-ES 6.1 Matrix, DTS-ES 6.1 Discrete,

DTS Neo:6, DTS 96/24

Various DTS technologies provide (up to) 5.1/6.1 (and 7.1 with mono

rear surrounds) output from suitably encoded DTS material.

Some newer DVDs carry both the mandatory DD and an optional DTS

surround encoding on alternative audio tracks.

The 540D V2 cannot decode these optional DTS formats itself but is

able to pass them, via its digital outputs, for decoding externally by a

suitable AV receiver. Decoding DTS requires a suitably encoded DTS disc

and a digital connection from the 540D V2 to an AV Receiver capable of

decoding the appropriate DTS encoding type.

Video formats

DVDs are encoded using the MPEG 2 lossy video format giving over two

hours of high-quality digital video on single layer discs or over four hours

on dual-layer discs.

Note: Dual layer discs always exhibit a small pause or delay in playback

when the layer transition is made.

As well as the video itself, DVDs are also capable of storing up to eight

alternative tracks of digital audio, 32 subtitle tracks and nine camera

angles (where used by the film producers).

DivX is an even more compressed (than normal DVD) digital video

format, rather like MP3 for video. DivX compresses the video data to a

fraction of its original size using the more lossy MPEG 4 Part 2

compression. DivX enhances the basic MP4 encoding by allowing extra

features on the disc and various levels of quality/compression to be

applied at the encoding stage.

DivX or basic raw MPEG 4 files are supported by the 540D V2 on either

CD or DVD discs.

The 540D V2 may also be able to play MP4 type files created with

other CODEC programs (such as Xvid

), but playback of these is not

guaranteed.

Via its analog outputs, the 540D V2 can play back CDs in stereo, and

DVDs in either stereo or up to 5.1 output when they have been encoded

with Dolby Digital or Dolby Pro Logic/Pro Logic II formats.

Dolby Digital EX 6.1 discs can also be played but only 5.1 output will be

available (the sixth channel will be shared between the rear surround

left and right speakers).

The Stereo outputs of the 540D V2 always output stereo whether the

material is a stereo CD/DVD or multi-channel DVD.

The 5.1 outputs can be set for downmix (in which case the front left

and right only will be active) or 5.1 output (downmix off).

Note: If Downmix is set to ‘Off’, the default playback system is Dolby

Digital. If Pro Logic II is preferred, set Downmix to ‘On’ in the 540D V2

Setup menus.

The optional DTS soundtracks on some discs cannot be decoded by the

540D V2; however, the machine is able to send a raw bitstream version

of any soundtrack via its digital outputs for decoding by an external

AV receiver — this is the preferred setup, even if just Dolby Digital

decoding is required. This allows the decoding of the many other

surround-sound formats available in 5.1/6.1/7.1 and beyond.

We naturally recommend our own AV receivers, which offer many

decoding options and other facilities for the processing of surround

sound.

A brief guide to common surround-sound formats you may encounter

follows:

Dolby Digital (5.1)

This is the mandatory soundtrack encoding for DVD movies. Also known

as DD (3/2) or DD 5.1, DD provides (up to) 5.1 output from suitable

encoded Dolby Digital DVDs. There are five main channels (Front Left,

Front Right, Centre, Surround Left, Surround Right) and a Low Frequency

Effects Channel for the subwoofer, all discretely encoded. Decoding

Dolby Digital requires a Dolby Digital encoded DVD disc (nearly all DVDs)

and either a digital connection from the 540D V2 to a suitable

AV Receiver (preferred method) or the 540D V2's own built-in decoder

can be used, in which case a 5.1 analog connection from the 5.1 Audio

outputs to a suitable amplifier/speaker package is required.

Note: Dolby Digital and DTS formats can sometimes carry fewer

channels than their maximum, e.g. Dolby Digital (2/0), in which case a

Dolby Digital encoded signal is only carrying a two-channel stereo signal

(other channels inactive).

Pro Logic II

Pro Logic II is a Dolby technology where five channels (Front Left, Front

Right, Centre, Surround Left, Surround Right) are encoded into a Stereo

mix by an analog matrix process.

Dolby Pro Logic II is also compatible with the earlier four-channel

(Left, Centre, Right and mono Surround) Dolby Pro Logic system (the

decoding counterpart to Dolby Surround encoding) which was used

widely on TV material and earlier films. PL and PLII are present on many

early films, and often also in the stereo soundtrack available as

alternative alongside the DD 5.1 on many newer films.

The 540D V2 can decode PLII via its own decoder or an external

AV receiver can be used. Because the encoding process is analog, an

AV receiver can usually decode PLII from either an Analog Stereo or

Digital connection from the 540D V2 to the AV receiver. Consult your

receiver manual.

If it is desired to use the 540D V2's own built-in PLII decoder, a 5.1

analog connection from the 540D V2's 5.1 Audio outputs to a suitable

amplifier/speaker package should be made, Downmix should be set to

‘Off’ and Pro Logic II decoding set to ‘On’ in the 540D V2 Setup menus.

Surround-sound formats

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