E-MU 1212M PCIe - Manual (Page 86)

5 - Effects
Core Effects Descriptions
86 Creative Professional
Attack
Lookahead/
Delay This parameter is adjustable in milliseconds to allow the Reshaper to
either “look ahead” and advance (negative values) or “delay”
(positive values) the response of the envelope detector relative to
the dynamics of the input signal.
For example, negative lookahead values can cause the envelope
detector to start the ADSR's Attack phase before the actual attack of
the signal so as not to miss any audible transients. Likewise, positive
delay values can be used to start the Attack “late”, so that signal
transients are intentionally missed by the Attack.
Release
Threshold This parameter controls the level in dB below the Attack Threshold
at which the Release phase of the ADSR will begin.
Attack
Retrigger By default, when the value of this parameter is Disabled, the
Reshaper's ADSR engine will wait until at least the Release phase of
a cycle before restarting a new Attack phase.
By setting Attack Retrigger to Enabled, however, the Reshaper
becomes sensitive to new input signal transients during any phase
of the ADSR cycle. In addition, enabling this parameter will also
cause the attack to restart at the Release Level instead of whatever
gain was being applied when the new attack arrived.
Attack Curve This parameter allows the gain during the Attack phase to follow
one of 3 curves: linear, logarithmic, or exponential. Because the
ADSR computes gain using linear coefficients, the exponential curve
comes the closest to being a “constant in dB” gain ramp. A linear
curve provides a somewhat more immediate turn-on, while the
logarithmic curve presents a very abrupt turn-on.
Release Curve This parameter selects gain curves exactly as for the Attack Curve
parameter, except that the selected curves apply to both the Decay
and Release phases of the ADSR.
Parameter Description