Bedienungsanleitung Cambridge Audio Azur 751BD (Seite 27 von 40) (Englisch)

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Audio Format Setup

The "Audio Format Setup"section of the Setup Menu system allows you

to conﬁgure preferences for audio output formats. The menu items in this

section are:

Menus Settings

Secondary Audio ..........................................On

......................................................................Off

HDMI Audio...................................................Auto

LPCM

Bitstream

Off

Coaxial/Optical Output ................................LPCM

Bitstream

LPCM Rate Limit...........................................48K

96K

192K

SACD Output.................................................PCM

DSD

HDCD Decoding ...........................................On

Off

1. Secondary Audio

To set the Secondary Audio Program mixing option. Some Blu-ray discs

contain a secondary audio and video program, such as a director’s

commentary. Some Blu-ray Discs have a sound effect when you make

menu choices. This Setup Menu item allows you to decide whether to mix

the Secondary Audio Program and menu clicking sound into the primary

audio. The options are:

On – The Secondary Audio Program and menu clicking sound are mixed

into the primary audio. Usually this will cause the primary audio volume

to be slightly reduced. High resolution primary audio will be converted to

a normal resolution in order to mix with the secondary audio.

Off – The Secondary Audio Program and menu clicking sound are not

mixed into the primary audio and you cannot hear the secondary audio

or menu clicking sound. This setting preserves the highest possible audio

quality for the primary audio.

2. HDMI Audio

To select digital audio output format from the HDMI output. The options

are:

Auto (default) – The player checks with the device connecting to HDMI

output to automatically determine which audio format to use.

LPCM – Digital audio output via HDMI will be multi-channel Linear PCM

format. When this option is selected, compressed audio bit streams will

be decoded by the player and then sent as multi-channel PCM. This

setting is recommended when connecting the HDMI output directly to a

TV or to a receiver without advanced audio decoding capabilities.

Bitstream – Digital audio output via HDMI will be in bitstream format.

This option is recommended when connecting the HDMI output to an A/V

receiver or processor that supports advanced audio decoding of Dolby

TrueHD and DTS-HD Master Audio etc.

Off – No digital audio output via HDMI.

Note: If you use HDMI to connect audio to an HDMI A/V receiver or audio

processor, it is important that you choose 720p or higher HDMI output

resolution when playing high resolution audio content (DVD-Audio,

SACD, Dolby TrueHD and DTS-HD Master Audio). According to the HDMI

speciﬁcation, the bandwidth available for audio is proportional to the

total bandwidth used by video. At 480p/576p resolution, the HDMI

speciﬁcation can only support 2 channels of audio with high sample rate

(up to 192kHz), or 8 channels of audio with standard sample rate (up to

48kHz). If you play high resolution audio content at the 480p/576p

resolution, you may get reduced audio resolution, incomplete audio

channels, or even no audio/video output at all. Choosing a higher output

resolution such as 720p or above allows enough bandwidth for all high

sample rate audio channels.

3. Coaxial/Optical Output

Used to set the output format for the coaxial/optical digital audio outputs.

The options are:

LPCM – Forces down-mixed 2-channel digital audio output. Choose this

setting if your receiver/ampliﬁer or DAC only supports stereo digital (PCM)

audio.

Bitstream – Passes audio as compressed bitstream format to the

receiver/ampliﬁer. Choose this setting if your receiver/ampliﬁer is capable

of decoding Dolby Digital and/or DTS etc.

4. LPCM Rate Limit

To set the maximum Linear PCM output frequency for the coaxial/optical

digital output. This menu item is intended to ensure that the audio output

is compatible with equipment that cannot support high sample rates. It

sets an upper limit to decide whether the player shall down-sample audio.

The options are:

Note:

When using the Stereo or 7.1 Analog Audio outputs the LPCM rate

limit should always be set to 192kHz to allow the internal playback engine

to feed the up-sampler with the maximum sample-rate the content

supports.

48kHz – Supported by most equipment. Higher sample rate material will

be downsampled to 48kHz.

96kHz – Allows a higher sampling rate and frequency response. If using

an externally connected AV receiver or DAC via coaxial or optical, ensure

that the receiver/ampliﬁer can support it. Higher sample rate material

will be downsampled to 96kHz.

192kHz – Allows the highest sampling rate and frequency response. If

using an externally connected AV receiver or DAC via coaxial or optical,

ensure that the receiver/ampliﬁer can support it.

5. SACD Output

To select audio output format for SACD. The options are:

PCM – SACD Direct Stream Digital (DSD) data is decoded by the player

and converted into multi-channel, high resolution PCM data. The HDMI

output can be sent to an external AV receiver capable of receiving multi

channel PCM (HDMI 1.1 or higher inputs are required). The 651/751BD’s

own audio outputs are also active and playback of SACD material is

possible by the 651/751BD itself.

DSD – SACD DSD data is output over HDMI without any conversion. For

decoding by an external AV receiver capable of receiving DSD (HDMI 1.2a

or higher inputs are required and the receiver must actually include

support for DSD as it is not a mandatory requirement of the HDMI spec).

Playback Setup

Video Setup

Audio Format Setup

Audio Processing

Device Setup

Network Setup

Exit

Secondary Audio

HDMI Audio

Coaxial/Optical Output

LPCM Rate Limit

SACD Output

HDCD Decoding

Off

LPCM

48k

PCM

Setup Menu

Exit

Set the secondary audio program mixing option

Cambridge Audio Azur 751BD Seite 27

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