Soundtrack Pro 3 Effects Reference (en).pdf - Help Library - Apple

Important: To convolve audio in real time, Space Designer must first calculate any
parameter adjustments to the impulse response. This requires a moment or two, following
parameter edits, and is indicated by a blue progress bar. During this parameter edit
processing time you can continue to adjust the parameter. When calculation starts, the
blue bar is replaced by a red bar, advising you that calculation is taking place.
Working in Space Designer’s IR Sample Mode
In IR Sample mode, Space Designer loads and uses an impulse response recording of an
acoustic environment. This is convolved with the incoming audio signal to place it in the
acoustic space provided by the IR.
To activate IR Sample mode
µ Click the IR Sample button in the circular area to the left of the main display, and then
select the desired impulse response file from any folder.
Note: If you have already loaded an impulse response file, clicking the IR Sample button
switches the mode from Synthesized IR to IR Sample mode.
To manage the loaded IR file
µ Click the down arrow next to the IR Sample button to open a pop-up menu with the
following commands:
• Load IR: Loads an impulse response sample without changing the envelopes.
• Load IR & Init: Loads an impulse response sample and initializes the envelopes.
• Show in Finder: Opens a Finder window that shows the location of the currently loaded
IR file.
All impulse responses that ship with Soundtrack Pro are installed in the
/Library/Audio/Impulse Responses/Apple folder. Deconvolution files have an .sdir file
extension.
134 Chapter 11 Space Designer Convolution Reverb