Lexicon 960L Owner's Manual page 68

Using the Reverb Programs
Parameters Used in the 960L Algorithms (cont.)
EchoL, Echo Duration. Some reflection delays have echo capabilities. These appear as part of the input
EchoR,
path; echoes are passed to the reverberators as well as the reflection outputs. Also, echo signal is
EchoLF,
fed back through the input diffusors. This means that each echo will be more diffuse and spread
EchoLS,
than its predecessor. The control EchoLS sets the duration of an echo (that is, a feedback path) on
EchoRF,
the Left Surround Input and FbckLS sets the amount of feedback for that path. Any echo pattern
EchoRS
set with EchoLS and FbckLS will be heard in the surround reverb field and also in any reflection delay
whose source is the Left Surround Input.
EchoMST Echo Master Delay multiplies all echo delays by a percentage. This allows this single control to scale
a complicated echo pattern.
EDlyMST Early Master Delay multiplies all reflection delays by a percentage. For example, if Left Surround
Delay is set to 24 msec and EDlyMST is at 50%, the actual Left Surround Delay time will be 12 msec
and that figure will appear on the display. This allows this single control to scale a complicated
reflection pattern.
ErlLvl Early Level Master multiplies all individually-selected early reflection levels by a percentage. This
allows this single control to set the overall level of a complicated reflection pattern.
ErlRoll Early Rolloff controls the cutoff frequency of a 6dB per octave low pass filter on the output of the
early reflections.
Echo Feedback. Some reflection delays have echo capabilities. These appear as part of the input
FbckL,
path; echoes are passed to the reverberators as well as the reflection outputs. Also, echo signal is
FbckR,
FbckLF,
fed back through the input diffusors. This means that each echo will be more diffuse and spread
FbckRF,
than its predecessor. The control EchoLS sets the duration of an echo (that is, a feedback path) on
FbckRS
the Left Surround Input and FbckLS sets the amount of feedback for that path. Any echo pattern
set with EchoLS and FbckLS will be heard in the surround reverb field and also in any reflection delay
whose source is the Left Surround Input.
FbkMST Echo Feedback Master scales all the echo feedbacks by a single percentage, allowing this one
parameter to set the feedback of a complex pattern.
FrRoll Front-channel Rolloff (Surround algorithms only). Like Rolloff in stereo, it controls the cutoff frequen-
cy of a 6dB per octave low-pass filter at the output of all processing. In the Surround algorithms,
there are separate controls for the front (LF, C, and RF) channels (FrRoll) and rear (LS and RS) chan-
nels (RearRoll).
FrRvb Front Reverb Level (Surround algorithms only) controls the level of the reverberant tail, but to just the
LF and RF outputs. This allows their levels to be set relative to the early reflection levels and the other
reverb tails. We recommend setting the Front Reverb Level and the Rear Reverb Level approxi-
mately equal, with the Center Reverb Level less by about 4.5dB. RvbLvl is a master control for
CtrRvb, FrRvb and RearRvb.
FSDly Front-to-Surround Delay (Ambient Chamber only) In surround ambiences, there is a signal path from
front inputs to rear early reflections and also from rear inputs to front early reflections. The level of
this path (in both directions) is set by FSLvl. The high frequency rolloff is set by FSRoll. The delay in
the path (in both directions) is set by FSDly.
FSLvl Front-to-Surround Level (Surround Ambience and Ambient Chamber only) In surround ambiences,
there is a signal path from front inputs to rear early reflections and also from rear inputs to front early
reflections. The level of this path (in both directions) is set by FSLvl. The high frequency rolloff is set
by FSRoll. In Ambient Chamber, the delay in the path (in both directions) is set by FSDly.
FSRoll Front-to-Surround Rolloff (Surround Ambience and Ambient Chamber only) In surround ambiences,
there is a signal path from front inputs to rear early reflections and also from rear inputs to front early
reflections. The level of this path (in both directions) is set by FSLvl. The high frequency rolloff is set
by FSRoll. In Ambient Chamber, the delay in the path (in both directions) is set by FSDly.
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