10.6

Table Of Contents
109Logic Pro Instruments
Tip: Set the Attack time and Release time values to zero to closely follow the input
source. When the envelope follower Source pop-up menu choice is audio, or a very fast
modulation, this closely approximates the source envelope shape.
Tip: Assign an LFO as the source and modulate the Attack, Release and Scale
parameters with other modulation sources to create new and interesting LFO shapes
not available from the LFO menu.
Scale knob: Set the amplitude of the output signal, after the envelope follower has
processed the incoming signal.
Tip: Because an Env Follower modulation source may be assigned to multiple
targets, the Scale parameter can be used to adjust the modulation depth of multiple
target parameters simultaneously.
Env Follower display: Shows the input source (dimmed), and the resulting signal after
processing (bright). The display does not update if the Env Follower panel is inactive.
Logic Pro Alchemy ModMap
Modulation components are shown only in advanced view. Click the Advanced button to
switch to advanced view.
A ModMap is not a modulator. Instead, its purpose is to process the output of a modulator,
mapping the original values to new ones before they are applied to a modulation target.
ModMaps let you create curved velocity responses, scale the volume of each source across
the keyboard, quantize the pitch response to a random-LFO modulation so it aligns with
the steps of a scale, and much more.
Mapping is defined by the graphical shape of the ModMap, which represents a transfer
function. The x (horizontal) axis represents the range of original modulation values, from
0.00 to 1.00. The y (vertical) axis represents the range of mapped modulation values, also
ranging from 0.00 to 1.00. To see how a modulation value is affected by the ModMap, look
at the original value along the x-axis; the corresponding y value determines the output of
the mapping.
A convex ModMap maps the middle range of inputs to values that are higher than the
default output.
A concave ModMap maps the same range of inputs to values that are lower than the
default output.
A horizontally flat ModMap maps a range of inputs to a single output.
A stepped ModMap quantizes the input, mapping each input value to a corresponding
output value defined by one of the steps.