10.6

80Logic Pro Instruments
Partial envelope parameters
• Overall button: Shown above the Partial bar display, sets two Partial envelope modes.
• Overall button on: Each point represents a snapshot of summed amplitude, pitch,
and pan values of all partials at a certain point in time. Typically, you choose
snapshots in the envelope display and adjust individual or grouped partial values
in the Partial bar display. You can, however, also adjust all partial values in a given
snapshot by dragging vertically in the Partial envelope. The horizontal, or x-axis,
indicates the temporal position of each snapshot. The vertical, or y-axis, indicates
the summed value of each snapshot.
• Overall button off: Each point in the Partial envelope has a one-to-one correlation
with the selected partial in the Partial bar display. Adjusting a value in either the
Partial bar display or the Partial envelope is immediately reflected in the other. The
horizontal, or x-axis, indicates the temporal position of the selected partial. The
vertical, or y-axis, indicates the value of the selected partial.
Note: The time positions of envelope points may vary from one partial to the next as
you choose different partials when the Overall button is off. This is one of the keys
to the high quality of resynthesis in Alchemy: each partial can have an independent
set of points. When the Overall button is on, Alchemy presents a series of envelope
points linked to all partials, and adjustments to individual partial times and values are
handled automatically.
• Detail knob: Set the resolution of the Partial envelope display. This affects the number
of points shown.
• A value of 25% reduces the total number of visible points. This may necessitate
scrolling or zooming to view all points.
• A value of 100% shows all points. The 500 or more visible points are unnecessary
for anything other than the most precise edits, but you may find this level of detail
useful when programming an additive sound from scratch, rather than editing
resynthesis data.
• Mode pop-up menu and field: Choose a mode to determine the way the envelope
responds when a point is dragged.
• Normal: The dragged point only is moved. All other points remain stationary.
• Slide: Dragging one point causes all subsequent points to move, retaining the
relative distances between points.
• Stretch: Dragging left compresses earlier points and stretches later points. Dragging
right stretches earlier points and compresses later points. In either case, the total
length of the envelope is preserved.
Note: Point levels remain fixed in stretch mode, so you can only drag horizontally.
• Partial envelope: Display and edit envelope point positions and values.
• The ruler indicates the current envelope position in milliseconds.
• The Partial envelope shows only straight line segments between points, with no
convex or concave lines.
• The first and last points always have an amplitude of zero. In sounds with a fast
attack phase, a second point with a nonzero amplitude is shown at a time position
very close to the first point. You may need to increase the Detail setting to see the
second point.