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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 540R v3 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.
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 analog 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 540R v3 can create a Subwoofer output via Bass
management. Refer to the ‘Advanced bass management’ section in the
‘Operating instructions’ part of this manual.
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.
The 540R v3 has several music and home-cinema listening modes
available. The output from the 540R v3 will depend both on the source
signal present, the speaker setup selected and the decode mode
selected on the 540R v3. Before we describe how to operate the 540R
v3, below is a brief guide to the surround sound formats that the 540R
v3 is compatible with:
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 540R v3.
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 540R v3.
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).
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).
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).
Surround sound modes