Bedienungsanleitung Cambridge Audio Azur 751R V2 (Seite 21 von 40) (Englisch)

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The 751R V2 supports several music and home-cinema listening modes. The

output the 751R V2 can provide, depends both on the source signal present,

the speaker setup selected and the decode mode selected. Before we

describe how to operate the 751R V2, below is a brief guide to the Surround

Sound formats that the 751R V2 is compatible with for reference:

Dolby's lossless audio technology developed primarily for high capacity

Blu-ray discs/players. Dolby True HD delivers theoretically bit-for-bit sound

identical to the studio master by the use of 100% lossless encoding. Previous

formats such as Dolby Digital 5.1 or EX have used lossy encoding where

some data (that is theoretically less audible) is always lost in the encoding

process to reduce the storage capacity needed on the disc. This is a new

format that supports up to eight (usually used as 7.1) full-range channels

of 24-bit/96 kHz audio or two channels of 24/192 kHz via Blu-ray discs

and is not backwards compatible with earlier schemes. The format can

either be transmitted as a 'bitstream' to the 751R V2 for internal decoding

(recommended) or can be decoded by some Blu-ray players internally

and sent to the 751R V2 as multi-channel PCM. In both cases an HDMI

connection is required to the 751R V2 and a suitable Blu-ray player as Dolby

True HD is only ever transmitted over HDMI.

An encoding scheme based on the original Dolby Digital CODEC, but with

enhancements to improve coding efciency and improved audio quality.

Dolby Digital Plus supports 7.1 fully discrete channels compared to Dolby

Digitals 5.1 (or 6.1 in its EX variant where the 6th channel is matrix encoded).

These Dolby Digital Plus bitstreams are not backward compatible with legacy

Dolby Digital decoders but require an AV Receiver developed to decode

them (such as the 751R V2) and an HDMI connection as Dolby Digital Plus

is currently only transmitted over HDMI. It is however a requirement that

any Dolby Digital Plus enabled Blu-ray player must also be able transform

the Dolby Digital Plus into a backwards compatible Dolby Digital 5.1 output

for playback on legacy Dolby Digital systems. The 751R V2 is however fully

compatible with Dolby Digital Plus.

A new lossless audio codec from DTS, rather than being incompatible

with earlier versions, DTS-HD Master Audio is transmitted as an extension

to a normal DTS bitstream. A second embedded stream is sent which

contains the "difference" between the original studio master and the lossy

compressed DTS, plus the two extra channels. DTS-HD Master Audio

enabled devices (such as the 751R V2) are able to use this difference

information to recreate a bit for bit lossless version of the original 7.1 data.

Devices which do not support the Master Audio extension simply decode the

original 5.1 DTS stream and ignore the Master Audio extension providing

backwards compatibility.

DTS-HD High Resolution Audio

Known also as DTS-HR an extension to the original DTS audio format. DTS-

HD High Resolution Audio supports 7.1 fully discrete channels compared to

DTS's 5.1 (or 6.1 in its DTS ES Matrix or DTS ES Discrete variants). As with

DTS-HD Master Audio a second embedded stream is sent which contains the

"difference" between the original studio master and the lossy compressed

DTS, plus the two extra channels, however in this case the extra stream is

also formed by lossy compression. Effectively this is a 7.1 version of DTS

which can be decoded by devices (such as the 751R V2) which are able to

decode DTS-HD High Resolution Audio. Devices which do not support the

High Resolution extension simply decode the original 5.1 DTS stream and

ignore the High Resolution extension providing backwards compatibility.

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

encoded Dolby Digital material, with 5 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 and a digital connection from the source

equipment (Such as a DVD player) to the 751R V2.

Note: Dolby Digital and DTS formats can sometimes carry less channels

than their maximum such as Dolby Digital (2/0) which means a Dolby Digital

encoded signal which is actually only carrying a two channel stereo signal

(other channels inactive).

Known also as DTS (3/2) or DTS 5.1, DTS provides (up to) 5.1 output from

suitable encoded DTS material, with 5 main channels (Front Left, Front Right,

Centre, Surround Left, Surround Right) and a Low Frequency Effects Channel

for the subwoofer, all discretely encoded. Decoding DTS requires a suitably

encoded DTS disc and a digital connection from the source equipment to

the 751R V2.

Surround sound modes

Video processing settings

Video Processing Settings

Resolution :

Frame Rate :

Aspect Ratio :

Colourimetry :

Return I/O

1080P

60Hz

16:9

AUTO

This menu selects the settings that will be applied to any sources that have

had the Scaler set to Process in the Scaler Assign Menu, any sources set to

Bypass as unaffected.

The options are:

Scaler Assign

BD/DVD :

VIDEO 1 :

VIDEO 2 :

VIDEO 3 :

Recorder 1 :

Aux :

CD :

7.1 Direct :

Return I/O

Bypass

N/A

Resolution: Sets the output resolution, the options are 480P, 576P, 720P,

1080I and 1080P. I means interlaced and P means progressive scan.

Note: For 480P and 576P the 751R V2 automatically sets the Frame rate as

480P video formats are always 60Hz (NTSC format) and 576P video formats

are always 50Hz (PAL/SECAM formats).

For the other resolutions the next menu item allows choice of frame rate. It

usually best to set the output to the maximum resolution your TV supports.

Frame Rate: Sets the output to be xed at 60Hz (NTSC format) or 50Hz (PAL)

or AUTO which means the 751R V2 automatically dynamically matches the

output frame rate to the incoming frame rate. If your TV can handle both PAL

and NTSC signals the best option is AUTO (as this requires the least scaler

processing). If your TV only supports one or other format x the output to

that it supports.

Note: The incoming video of 24fps is always automatically bypassed by the

scaler and output in its native format (no change to resolution, frame rate

or any other settings).

Aspect Ratio: Sets the format of the output video (the ratio of width to

height) to one of two standardised types. If you have a wide TV set this to

16:9, if you have a non wide TV set this to 4:3.

Colourimtery: Sets the method used by the scaler to describe the colour of

the output video, the options are ITU.601, ITU.709 and AUTO. ITU.601 refers

to ITU-R BT.601, a form of digital component video developed for television

use. ITU.709 refers to ITU-R BT.709 a newer form of digital component video

primarily developed for HDTV and computer-display applications, that more

closely ts the colour rendering characteristics of newer CRTs and at panel

TVs. Again simply experiment to nd the best looking option for your TV.

In Auto mode the output format will match that at the input without

conversion.

Cambridge Audio Azur 751R V2 Seite 21

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