Lexicon NUVERB - FOR MACINTOSH Manual page 102

Reference
Programs Available in the Dual Mono and Cascade Modes:
Dual Delay
General Description
The Dual Delay effect consists of 2 types of delay lines: Gliding Flange delays and Fixed delays.
This is a true stereo effect. (If run in Dual Mono mode, however, it will be mono.)
Two independent gliding flange predelays are available, each with a 10ms range in single
sample steps. There is also a ganged stereo gliding flange delay. There are two flange gain
controls which vary the overall amount of flange effect.
Setting the flange gains very high will cause an "over the top" type of flange to occur as the
flange glide delays cross over the predelay pointers. The outputs of the flange delays are fed
to the delay left and delay right lines which are 2.5 seconds long. Once into these delay lines,
you can create many different delay effects. There are two programmable taps on each delay
line. Delays 1 (left) and 2 (right) can be programmed anywhere along this 2.5 second path.
There will, however, be no apparant delay unless a feedback value is assigned to the delay
values via feedback parameters 1 and 2. All Pass filters, or diffusors, in line with the feedback
paths are labeled APD (All Pass Delay) and APG (All Pass Gain). The actual "tuning" of the All
Pass Delay is accomplished with the APD control. The amount of diffusion is set by APG.
When APG is turned high and FBK 1 is adjusted away from the 0% value, each feedback loop
will be rediffused.
Delays 3 and 4 are cross feedback delay lines. They are also adjustable anywhere along the 2.5
second delay line. Delay 3 feeds from the left delay position to the input of the right delay line.
The same is true with Delay 4 feeding into the left delay line. The feedback parameters adjust
the amount (level) passed into the destination delay lines.
The last pair of delay pointers (LDLY and RDLY) can be thought of as independently adjustable
post delays. These can be adjusted anywhere along the 2.5 second delay line.
The output of each delay line can be positioned anywhere in the stereo pan field. LPAN adjusts
the position of the left delay loop; RPAN positions the output of the right delay loop.
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