E-Mu PROTEUS FX Manual de usuario Pagina 57

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4 - Preset Editor
Preset Globals
E-MU Systems 57
Channel Lag 1 & 2 Rate
Like the Layer Lag processors, the Channel Lag slows down rapid changes in the input
signal. The output “lags” behind the input at a pre-programmed rate.
Unlike the layer level lag processors, the Channel Lags 1 & 2 take effect as soon as the
preset is selected. In contrast, the Voice level lag processors begin acting only after a
keyboard key has been depressed. The Channel Lag also has a Lag Amount input which
controls the lag time. Positive lag amounts increase the lag time. A MIDI controller is
commonly used to control lag amount.
The Channel Lags could be used to slowly increase or decrease the speed of an LFO
which in turn controls some other effect, perhaps left/right panning, pitch, or the filter.
When a MIDI footswitch is used as the input, the lag acts to slow down the instanta-
neous change of the switch. The slowly changing output value can then be routed using
a patchcord to crossfade between voices or change the speed of an LFO.
Poly Key Timer
This processor starts a timer which begins counting down whenever a key is pressed
and stops when the key is released. The value of this timer can be used on any voices
assigned to the key after the key release. The Poly Key Timer is a special modulation
source controlled by the key and not the voice.
Poly Key Timer can be used to control the volume of a Release Layer in order to reduce
its volume the longer a key is held. This control is commonly used on grand piano
presets to lower the pedal damper volume the longer the keys are held.
Channel
Lag
Lag Amount
(+ value = longer)
ex. footswitch
Release
Layer
Voice
Poly Release
Trigger
Preset Global
Amp
Amp Vol
Poly Key
Timer
Note-On - Poly Key Timer begins counting down.
Note-Off - Poly Key Timer stops counting and outputs value.
Release layer
voice becomes
softer the
longer the key
is held.
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