Cambridge Audio Azur - Manual (Page 15)

340R azur
15
ENGLISH
The 340R has several music and home-cinema listening modes
available. Before we describe how to operate the 340R, below is a brief
guide to surround sound formats:
Dolby Digital
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 340R.
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).
DTS
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 340R.
Pro Logic II
The replacement for original Pro Logic, 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 analog 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 340R can create a Subwoofer output (for 5.1) via
Bass management. Refer to the ‘Advanced bass management’ section
in the ‘Operating instructions’ part of this manual.
Dolby Digital EX
Known also as DD (3/3) or DD 6.1, an enhanced form of Dolby Digital.
On top of the normal discretely encoded 5.1 channels DD EX provides an
extra 6th channel (Surround Back) matrix encoded into the rear
surrounds. As DD EX 6.1 is backwards compatible with DD 5.1 the 340R
can play back DD EX material as 5.1. The 6th Surround Back signal is
then present in both Left and Right Rear Surrounds forming a phantom
rear centre.
DTS-ES 6.1 Matrix, DTS-ES 6.1 Discrete
Enhanced forms of DTS which also encode an extra 6th channel
(Surround Back) into the rear surrounds. Both DTS EX Matrix and DTS EX
Discrete are backwards compatible with DTS 5.1 so the 340R can play
back DTS ES Matrix or Discrete material as 5.1, the 6th Surround Back
signal being present in both Left and Right Rear Surrounds as a
phantom rear centre.
DSP modes
These modes allow a realistic surround-sound experience from source
material that has no encoding at all. The surround sound effect is
achieved by Digital Signal Processing of the Analog or Digital stereo
source used. Five modes are possible: Movie, Music, Room, Theatre and
Hall.
Surround sound modes