10.6

Table Of Contents
139Logic Pro Instruments
Tip: Where possible, try to use the shortest possible impulse response length
required because this helps to reduce CPU load. If you change the IR length, you will
need to adjust the envelope shown in the Impulse response display.
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 Logic Pro 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.