Lexicon Digital Controller DC-1 - Manual (Page 52)

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Lexicon
DC-1 Effects
The TV Matrix effect provides surround effects for television viewing of
monaural, stereo, and stereo synthesized programs.
Parameter Initial Value Range
AUTO AZIMUTH ON ON/OFF
FRONT STEERING FULL 1/4, 1/2, Full, Off
REAR ROLLOFF 8.2kHz 453Hz-20.0kHz
DOLBY B NR OFF ON/OFF
RE-EQUALIZER OFF ON/OFF
SIDE ASSIGN SIDE Front/Side, Front/Rear*
SURROUND LEVEL +0dB -5 to +5dB
SUBWOOFER LVL 0dB -5 to +5dB
EFFECT LEVEL +00dB -30 to +05dB
CUSTOM
* Dependent on speaker configuration
TV Matrix
TV Matrix Parameters
AUTO AZIMUTH is short for auto azimuth error correction/automatic
input balance. Auto Azimuth should be set to ON for films, and OFF for
music. When ON, special patented algorithms continually monitor the
input signal and adjust both the relative level and time offset of the two
channels to keep the dialog properly centered and special effects properly
localized. This automatic feature is the reason the unit does not need an
input balance control for Dolby Surround decoding.
FRONT STEERING The essence of the TV MATRIX Effect is that dialog,
music, and surround effects are dynamically directed to the output chan-
nels, a process called steering. The FRONT STEERING control allows you
to adjust the amount of steering in the front channels. When this control is
set to FULL, the steering is identical to Dolby Pro Logic. At 1/2, steering is
reduced to accommodate the wide range of television programming. Select-
ing OFF will steer the center signal to both the left and right channels. This
parameter is automatically set to OFF for systems configured without a
center speaker.
REAR ROLLOFF sets the cutoff frequency of a low pass filter in the rear-
channel. Frequencies above this setting are attenuated. This control should
be set high enough to give presence and airiness to the rear sound without
placing distracting instrumental overtones or other sounds behind you. In
systems configured without rear speakers, the settings affect the side out-
puts.
DOLBY B NR is used in Pro Logic and THX effects for the surround channels
according to Dolby specifications. Because Dolby Surround encoded pro-
gram material is generally listened to with the unit set for Pro Logic or THX,
this parameter is normally off.
RE-EQUALIZER equalizes the left, center, and right channel outputs to
match the overall frequency balance of the original recording. Without this
re-equalization, many films and some television programs will sound too
bright.