Dolby Laboratories DP564 - Manual (Page 36)

DP564 Multichannel Audio Decoder Menus
4-10
Pro Logic II
The DP564 supports four Pro Logic II modes:
Movie
,
Music
,
Pro Logic
, and
Matrix
. Additional menus under
Pro Logic II
give you control over settings
for
Panorama
,
Dimension
, and
Center Width
, which offer a variety of
settings activated when in
Music
mode.
Movie
mode is the standard setting for programs with video. This decoding is based
on the original Pro Logic decoding scheme, but with the single Surround channel
separated into Left and Right Surround channels.
Music
mode is the most versatile feature of Pro Logic II. It activates the settings on
the
Panorama
,
Dimension
, and
Center Width
menus; those settings can help
a consumer make a stereo (Lo/Ro) recording into one that takes advantage of a
multichannel listening environment. Particularly attractive for automotive
entertainment systems, this can be used in home theaters as well.
Pro Logic
is the Pro Logic II system reproduction of the original Pro Logic
decoding system. Because consumer decoders now offer Pro Logic II as the default
Dolby Surround decoding system, this emulation mode is available to reproduce the
original Pro Logic decoding if the consumer wishes to hear it. (This option is not
available on all consumer decoders made with Pro Logic II.)
Matrix
is primarily for radio reception in cars. It is essentially the same as the
original passive Dolby Surround decoder without the directional steering provided by
Pro Logic.
Matrix
can also enhance mono programs, and can be used to try to clean
up weak radio signals in cars. You can apply
Matrix
to a mono input by selecting
the
Lo/Ro
downmix, and then
Pro Logic II
. Neither
Pro Logic II
nor
Pro Logic
is
available if the
Mono
downmix is selected.
Panorama
Panorama mode sends the stereo signal to the surround speakers as well as the front
Left and Right. The
Panorama
setting is disregarded if the Pro Logic II mode is
anything other than
Music
.
Dimension
Dimension adjusts the focus of the signal from the front speakers to the rear speakers.
If the Pro Logic II mode is anything other than
Music
, the
Dimension
setting is
read as
0
(Center).
Center Width
Center Width
steers the Center output signal between the Center, Left, and Right
outputs. At
–3
, the center output is sent 100 percent to the Center channel.
L/R
sends
the center output equally to Left and Right, with nothing sent to Center.