Effects Reference

122 Chapter 11 Convolution Reverb: Space Designer
 Length parameter: Adjusts the length of the impulse response.
 Synthesized IR button: Click to switch Space Designer to Synthesized IR mode. In this
mode, Space Designer generates a new synthesized impulse response from the
values of the Length, envelope, filter, EQ, and Spread parameters. You may freely
switch between a loaded impulse response sample and a synthesized impulse
response without losing the settings of the other. See “Synthesizer Impulse Response
Parameters” for more information on working in Synthesized IR mode.
Working in IR Sample Mode
When you first click the IR Sample button, a file selector box opens, allowing you to
select the desired impulse response file from a folder on your hard disk or CD. If you
have already loaded an impulse response file, this button switches back from
Synthesized IR to IR Sample mode.
Loading IRs
To change the currently loaded impulse response, click the downward pointing arrow
to the right of the button. This accesses the following menu functions:
 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 displays the file location.
The name of the loaded impulse response file and its length are displayed in the main
display’s Envelope view.
All impulse responses that ship with Soundtrack Pro are installed in the /Library/Audio/
Impulse Responses/Apple folder. The default name for deconvolution files consists of
the source file name, appended with an “.sdir” file extension.
Impulse Response Formats
Any mono, stereo, AIFF, SDII, or WAV file can be used. In addition, because Space
Designer supports surround formats up to 7.1 surround, discreet audio files and B-format
audio files that comprise a single surround IR can also be used.