10.6

57Logic Pro Instruments
Logic Pro Alchemy morph controls
Source components are shown only in advanced view. Click the Advanced button to switch
to advanced view, then click the Morph button to view and use the morph controls.
The morph controls determine how the four Alchemy sources interact. There are two basic
types of interaction.
• XFade: In a crossfade, all active sources play simultaneously, and the X and Y knobs
control the mix between them. This is equivalent to turning the Amp knobs in each
source to attain the desired mix. If you crossfade from a source with a high Coarse Tune
setting to a source with a low Coarse Tune setting, the high source fades out as the low
source fades in. In the middle of the crossfade you hear both sources.
• Morph: In a morph, a single sound is generated with parameter values determined by
interpolating between the settings of all four sources. If you morph from a source with a
high Coarse Tune setting to a source with a low Coarse Tune setting, you hear a single
sound during the morph. The sound tuning falls smoothly from the high value to the low
one.
Morphing provides more scope than simple crossfades between sources. It also allows
cross-synthesis, where you can combine different aspects of different sound elements. For
example, you could apply the formants or other characteristics of an additive source to the
spectral element of another source. See the tutorials found in Logic Pro Alchemy elemental
morphs overview.
Only certain parameters, notably all parameters controlled with a knob, can be morphed.
Morphed parameters are indicated by a green arc around the control. Parameters that are
morphed and have a modulation assignment show both an orange and green arc around
the control. Parameter settings are shared across all morphed sources, which means that
changing a parameter in one source results in the corresponding parameter being changed
for all morphed sources.
Note: Parameters that do not directly participate in the morph, including most buttons
and pop-up menus, are indicated with a lock icon displayed at the top left of the control
(the lock icons are shown only in source subpages). Where there is a parameter pairing of
an On button and a pop-up menu, only the button shows the lock icon. Neither parameter
participates in the morph.