10.6

Table Of Contents
101Logic Pro Instruments
You can adjust the curvature of segments between points. Drag the line between points
upward to make a segment progressively more convex; drag it downward to make a
segment progressively more concave. Convex, linear, and concave envelope segments
produce characteristically different effects. Option-click the line to reset a segment to a
linear slope.
Envelope controls
Current AHDSR pop-up menu and field: Access each AHDSR control panel by selecting
a number from the pop-up menu or with the Previous and Next arrows. Alchemy
provides up to 16 envelopes—one by default, but more if you create them when
assigning modulators.
File button: Open a pop-up menu with a number of envelope handling commands.
Preset submenu: Choose a preset envelope shape. This can be used as is, or as a
starting point for your own envelope shapes.
Save: Save the current envelope. A dialog opens in which you can name and save the
envelope file (*.ahd). The new envelope name appears at the bottom of the Preset
submenu.
Copy/Paste: Use these commands to copy settings between envelopes.
Clear: Initialize the AHDSR.
Randomize: Create a random envelope shape. This can be used as is, or as a starting
point for your own envelope shapes.
Trigger pop-up menu: Choose On to retrigger the envelope (start from zero) with each
new played note. Off triggers the envelope for the first note only. Voice On/FX Off
modulates voice parameters only, not effects. The envelope retriggers only for notes
received after all other notes have been released.
Note: Settings from earlier application versions may not behave as expected because
of the additional trigger option. Change to VoiceOn/FX Off to match the former version
behavior, then resave the setting.
Sync button: Turn on to synchronize the envelope with the project tempo. Adjustment of
AHDR knobs snaps the envelope to bars and beats. Turn off to set envelope stage times
freely.
Envelope display: The AHDSR display shows an editable graph of envelope generator
output.
Attack knob: Set the time required to reach the peak amplitude level after a note is
played. Adjustable from 0.00 seconds to 20.00 seconds.
Hold knob: Determine the time that the peak amplitude level is held before the decay
stage of the envelope begins. Adjustable from 0.00 seconds to 20.00 seconds.