SDP-3 Digital Surround Processor/Controller
AC-3 Effects and Parameters
47
5.1 Logic 7
5.1 Logic 7 combines all the features of Dolby Digital AC-3 with
enhancements by JBL Synthesis and LucasFilm. This effect uses Logic
7 matrix technology to enhance the steering between the side speakers
and the rear speakers, so sounds intended to come from behind the
listener actually do come from behind. This effect also includes the
adaptive decorrelation and re-equalizer features of 5.1 THX.
5.1 Logic 7 provides the ultimate in film reproduction. It brings out all the
increased excitement and spaciousness a 7 channel speaker system
can produce.
Parameter
Initial Value
Range
AC-3 STATUS (display only — not user adjustable)
COMPRESSION
OFF
OFF, ON, AUTO
VOCAL ENHANCE
+0.0dB
+0.0dB, +3.0dB, +6.0dB
RE-EQUALIZER
ON
ON, OFF
BASS ENHANCE
OFF
ON, OFF
REAR DELAY OFFSET
0ms
0-20ms
SIDE LEVEL
+0dB
-5dB to +5dB
REAR LEVEL
+0dB
-5dB to +5dB
LFE MIX LEVEL
+0.0dB
-10.0dB to 0.0dB
SUBWOOFER LVL
-5dB
-10dB to +10dB
CUSTOM/TRIGGER
ENABLE
ENABLE, DISABLE
5.1 Dolby
The 5.1 Dolby effect decodes Dolby AC-3 encoded soundtracks. Unlike
analog Dolby Surround decoding, 5.1 Dolby uses five discrete full-range
channels and a sixth dedicated, Low Frequency Effect (LFE) channel.
In this effect, any rear speakers present are connected in parallel with
the side speakers. This is the basic Dolby AC-3 effect. It does not include
the enhancements by JBL Synthesis or LucasFilm, which are available
with other AC-3 effects in the SDP-3.
Parameter
Initial Value
Range
AC-3 STATUS (display only — not user adjustable)
COMPRESSION
OFF
OFF, ON, AUTO
VOCAL ENHANCE
+0.0dB
+0.0dB, +3.0dB, +6.0dB
BASS ENHANCE
OFF
ON, OFF
SIDE LEVEL
+0dB
-5dB to +5dB
REAR LEVEL
+0dB
-5dB to +5dB
LFE MIX LEVEL
+0.0dB
-10.0dB to +0.0dB
SUBWOOFER LVL
+0dB
-10dB to +10dB
CUSTOM/TRIGGER
ENABLE
ENABLE, DISABLE
