Lexicon PCM 90 - REV 1 User Manual page 79

The Algorithms and Their Parameters
A special, composite output of these switches, called Sw 1&2 is available as a Modulation cont'd.
patch source. The value of Sw 1&2 alternates between the output of Sw 1 and
the output of Sw 2. The alternation occurs on the transition from on to off. Note
that both Sw 1 and Sw 2 must be active for the alternation to occur.
Mod: Delay
This control allows a copy of the output of any other patch source to be delayed.
The delay time can be set as an absolute amount of time (0-5 seconds) or it can
be related to tempo. The delayed value specified here can then be selected as
a patch source.
Mod: S&Hold
The Sample & Hold control allows you to select an input source, a trigger for
sampling the source, and a trigger threshold. Anything on the Patch Source list
(shown on the following page) can be selected as an input source (Src). The
trigger (Trigger) can be any other Patch Source. Each time the trigger rises
above the threshold specified for T Lvl, the PCM 90 snaps a sample of the
source and holds its value until the trigger once again exceeds the threshold. In
example shown below, a sine wave is the source and Mono Lvl is the trigger. The
threshold has been set at 90. Each time Mono Lvl rises above 90, the sine wave
is sampled and held.
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