10.6

Table Of Contents
108Logic Pro Instruments
Logic Pro Alchemy envelope follower
Modulation components are shown only in advanced view. Click the Advanced button to
switch to advanced view.
The Env Follower module provides an envelope follower with Attack, Release, and Scale
parameters. The Attack and Release times can be set independently. You can set the
overall Scale, or amplitude, of the Env Follower output.
Adjustments to Attack and Release times cause a slowdown in the reaction time of the
envelope follower to the input signal. The display shows changes in real time.
Env Follower parameters
Current Env Follower pop-up menu and field: Access each Env Follower control panel
by selecting a number from the pop-up menu or with the Previous and Next arrows.
Alchemy provides up to 16 envelope followers—one by default, but more if you create
them when assigning modulators.
File button: Open a pop-up menu with a number of envelope follower handling
commands.
Preset submenu: Choose a preset envelope follower setting. This can be used as is,
or as a starting point for your own envelope follower settings.
Save: Save the current envelope follower settings. A dialog opens in which you can
name and save the envelope file (*.ef). The new envelope name will appear in the
Preset submenu.
Copy/Paste: Use these commands to copy settings between envelope followers.
Clear: Initialize the envelope follower.
Source pop-up menu: Choose a source for the envelope follower from the Audio or
Modulators submenu.
Audio: The output of any individual Alchemy source, master filters 1 or 2, master
output pre- or post-effects, or the sidechain input.
Modulators: Choose any active modulation source, Note Property, MIDI source, or
Perform control.
Note: The Source pop-up menu selection is saved with an envelope follower preset,
but is only restored to the same modulator if the corresponding modulation source is
active at the time of loading.
Attack knob: Set the time required to reach the peak amplitude level of the audio or
modulation source. Longer attack times cause the rise time to be lazy.
Release knob: Set the time required to fall from the peak amplitude level reached during
the attack phase to the current level of the audio or modulation source.