Cambridge Audio AZUR 651 - Manual (Page 27)

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651/751BD azur
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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:
M
Meennuuss SSeettttiinnggss
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:
NNoottee:: 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
LPCM
48k
PCM
On
Setup Menu
Exit
Set the secondary audio program mixing option