Cambridge Audio AZUR 650R - Manual (Page 19)

650R azur
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Dolby Digital EX
Known also as DD (3/3) or DD 6.1, an enhanced form of Dolby Digital. On top
of the discretely encoded 5.1 channels DD EX provides an extra 6th channel
(Surround Back, giving 6.1) matrix encoded into the rear surrounds for
greater image depth and more solid sound localisation behind the listener.
DD EX requires a DD EX encoded disc. DD EX is backwards compatible with
DD 5.1 decoding. If DD EX is decoded as normal DD the Surround Back signal
will be present in both Left and Right Rear Surrounds (forming a phantom
rear centre). It can also be decoded as 7.1 by sending the Surround Back
decode to both the Surround Back Left and Right speakers (forming two
mono Back Surrounds).
DTS-ES Matrix
Known also as DTS (3/3) Matrix, an enhanced form of DTS. On top of the
discretely encoded 5.1 channels DTS ES also provides an extra 6th channel
(Surround Back giving 6.1), matrix encoded into the rear surrounds for
greater image depth and more solid sound localisation behind the listener.
DTS ES requires a DTS ES encoded disc. DTS ES material is backwards
compatible with DTS 5.1 decoding. If DTS ES is decoded as normal DTS the
Surround Back signal will be present in both Left and Right Rear Surrounds
(forming a phantom rear centre). It can also be decoded as 7.1 by sending
the Surround Back decode to the both the Surround Back Left and Right
speakers (forming two mono Back Surrounds).
DTS-ES Discrete
Another enhanced form of DTS, also known as DTS (3/3) Discrete or DTS ES
Discrete 6.1. DTS ES Discrete also provides an extra channel (Surround Back)
for greater image depth and more solid sound localisation behind the
listener, however in this case extra data is included in the bitstream so that
all channels are discretely encoded. The Surround Back has greater
separation from the other channels than is possible with matrix encoded
technologies. DTS-ES Discrete requires a DTS-ES Discrete encoded disc.
DTS ES Discrete is backwards compatible with both DTS 5.1 and DTS ES
Matrix 6.1 decoding. If DTS ES Discrete is decoded as normal DTS the
Surround Back signal will be present in both Left and Right Rear Surrounds
(forming a phantom rear centre). If DTS ES Discrete is decoded with DTS ES
Matrix the Surround Back signal will be decoded separately (i.e. as 6.1) but
by a matrix process, which will give the same channel separation as if the
source disc were actually DTS ES Matrix (but not as good as DTS EX Discrete).
It can also be decoded as 7.1 by sending the Surround Back decode to both
the Surround Back Left and Right speakers (forming two mono Back
Surrounds).
Pro Logic II
The replacement for original ProLogic, Pro Logic II is a technology where 5
channels (Front Left, Front Right, Centre, Surround Left, Surround Right) are
encoded into a Stereo mix by an analogue matrix process. Dolby Pro Logic II
material can be played back by normal Stereo equipment (as Stereo) or
decoded into 5 channel surround-sound.
Dolby Pro Logic II is compatible with the earlier 4 channel (Left, Centre, Right
and mono Surround) Dolby Pro Logic system (which was the decoding
counterpart to Dolby Surround encoding) as used widely on Video tapes, TV
broadcasts and earlier films.
Note: Pro Logic does not include a Low Frequency Effects channel for the
Subwoofer, but the 650R can create a Subwoofer output (for 5.1) via Bass
management. Refer to the ‘Tone/Sub/LFE configuration’ section in the
‘Operating instructions’ part of this manual.
Pro Logic IIx
A newer version of Dolby Pro Logic II which is able to recreate 6 or 7 discrete
surround sound channels (with fully stereo Back Surrounds in 7 channel
mode) from suitable encoded stereo source material. Pro Logic IIx also has
modes for post processing either Stereo material or 5.1 material into 6 or 7
channels whether or not it has been Pro Logic IIx encoded. When 5.1
decoding is required, Dolby Prologic II decoding will always be used by the
650R in place of Pro Logic IIx as IIx only works for 6 or 7 channel output.
Note: Pro Logic IIx does not include a Low Frequency Effects channel for the
Subwoofer, but the 650R can create a Subwoofer output (for 6.1/7.1) via
Bass management. Refer to the ‘Tone/Sub/LFE configuration’ section in the
‘Operating instructions’ part of this manual.
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DTS Neo:6
A DTS technology which is able to recreate 6 channel (Left Front, Right Front,
Centre, Left Surround, Right Surround, Surround Back ) surround sound from
suitable analogue matrix encoded stereo source material. DTS Neo:6
material can be played back by normal Stereo equipment (as Stereo) or
decoded into 6 channel surround-sound.
Note: Neo:6 does not include a Low Frequency Effects channel for the
Subwoofer, but the 650R can create a Subwoofer output via Bass
management. Refer to the ‘Tone/Sub/LFE configuration’ section in the
‘Operating instructions’ part of this manual.
DTS Neo:6 can also be decoded as 7.1 by sending the Surround Back decode
to the both the Surround Back Left and Right speakers (forming two mono
Back Surrounds).
DTS 96/24
A DTS technology that provides 5.1 channels of 96kHz / 24bit audio (along
with video if required) on DVD-Video and DVD-Audio (video zone) discs (when
suitably encoded in DTS 96/24). DVD players which allow 'DTS digital out'
pass the DTS 96/24 bitstream over S/PDIF for decoding in the 650R.
DSP modes
These modes allow a surround-sound experience from source material that
has no encoding at all. The surround sound effect is achieved by Digital
Signal Processing of the Analogue or Digital stereo source used. Five modes
are possible: Movie, Music, Room, Theatre and Hall.
Stereo/Stereo + Sub
Only the Front Left and Front Right speakers (and subwoofer if selected) have
output in this mode. If an analogue source is selected it will be converted to
digital via 24 bit A/D converters to allow digital domain sub creation and
bass/treble controls.
If a digital source is selected the 650R will be processing either LPCM stereo
(from the digital outputs of a CD player for instance) or a Stereo downmix of
DD or DTS material (from the digital output of a DVD player for instance).
Other modes
Analogue Stereo Direct
Selects the analogue inputs for the current source directly with no A/D
conversion, DSP processing, Bass/Treble or subwoofer channel active.
Provides the very best fidelity for analogue Hi-Fi source equipment. In this
mode the 650R is acting just like a normal Hi-Fi integrated amplifier.
Multi Channel PCM
Some playback devices (in particular Blu-ray players) are able to decode
some of the above formats themselves internally and then output the
decoded audio as Multi Channel PCM to the 650R. In addition Blu-ray disks
can support native unencoded Multi Channel PCM soundtracks (of up to 8
channels) on the disc itself. In either case if your player can output these over
HDMI the 650R is able to receive them in Multi-Channel PCM mode.