Split" Setup Algorithms; Dual Delays - Lexicon 300 - V3.0 REV 1 Owner's Manual

The Dual Delay algorithm consists of 2 types of delay lines: Gliding Flange
delays and Fixed delays. This is a true stereo algorithm. (If run in a Dual Mono
setup, however, it will be mono.)
Two independet gliding flange predelays are available, each with a 20ms 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.
The flange glides are typically modulated by the internal LFO. 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. DLY1 (left) and DLY2 (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 FBK1
and FBK2. 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 FBK1 is adjusted away from the 0% value,
each feedback loop will be rediffused.
DLY3 and DLY4 are cross feedback delay lines. They are also adjustable
anywhere along the 2.5 second delay line. DLY3 feeds from the left delay
position to the input of the right delay line. The same is true with DLY4 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.
The Algorithms and their Parameters
"Split" Setup
Algorithms

Dual Delays

General Description
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