3.5

Table Of Contents
140MainStage Instruments
Impulse response display: View the loaded impulse response waveform. An editable
level envelope is superimposed over the waveform.
Drag the envelope points to set levels over the duration of the impulse response.
Click on or near the envelope line to create new points.
Double-click a point to delete it.
IR pop-up menu and field: Load an impulse response (IR). Use the arrows to step
forward and backward through impulse responses.
File button: Open a pop-up menu with several useful commands and to access presets.
Presets: Choose a preset from the submenu.
Save: Open a dialog where you can name and save the current settings to a new
preset. The saved preset name is shown at the bottom of the Presets submenu list.
Copy/Paste: Copy the current settings to the Clipboard and paste the Clipboard
contents.
Clear: Reset all parameter settings to default values.
Note: The impulse response file is not loaded, saved, or copied and pasted. File
menu commands affect only the parameter settings.
Reverse button: Reverse playback of the loaded impulse response.
On/off buttons: Enable or disable either integrated filter module.
Filter type pop-up menus and fields: Choose the filter type. See MainStage Alchemy
filter types.
Cutoff knobs: Set the cutoff frequency for each filter.
Resonance knobs: Set the resonance or emphasis for each filter. Higher settings boost
frequencies in the immediate vicinity of the cutoff frequency.
MainStage Alchemy extended parameters
Alchemy provides additional parameters that are accessed by clicking the disclosure
triangle at the lower left of the interface.
Extended parameters
MIDI Mono Mode pop-up menu: Choose Off, On (with common base channel 1), or On
(with common base channel 16).
In either mode, each voice receives on a different MIDI channel. Per voice channels
support pitchbend, aftertouch, modwheel, and Performance control assignment
messages. See MainStage Alchemy performance controls. Controllers and MIDI
messages sent on the base channel affect all voices.
Mono Mode Pitch Range slider: Set a value from 0 to 96.
The chosen pitch bend range affects individual note pitchbend messages received on
all but the common base channel. The default is 48 semitones, which is compatible
with the GarageBand for iOS keyboard in pitch mode. When using a MIDI guitar, 24
semitones is the preferable setting because most guitar to MIDI converters use this
range by default.