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Chapter 13 Space Designer convolution reverb 240
Use impulse responses
Space Designer can use either recorded impulse response les or synthesized impulse responses.
The circular area to the left of the main display contains the impulse response parameters. These
are used to determine the impulse response mode (IR Sample mode or Synthesized IR mode), to
load or create impulse responses, and to set the sample rate and length.
Impulse response parameters
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IR Sample button and pop-up menu: Click the IR Sample button to switch to IR Sample mode.
In IR Sample mode, an impulse response sample is used to generate reverberation. Click the
down arrow next to the IR Sample button to open the IR Sample pop-up menu.
•
Synthesized IR button: Click to turn on Synthesized IR mode. A new synthesized impulse
response is generated, which is derived from the values of the Length, envelope, Filter, EQ, and
Spread parameters.
•
Sample rate slider: Move to determine the sample rate of the loaded impulse response.
•
Preserve length button: Click to preserve the original length of the impulse response when
changing the sample rate with the sample rate slider.
•
Length eld: Move to adjust the length of the impulse response.
Important: To convolve audio in real time, Space Designer must rst 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,
indicating that a calculation is occurring.