Intro to Space Designer impulse responses in Final Cut Pro
Space Designer can use either recorded impulse response files or its own synthesized impulse responses. The circular area to the left of the main display contains the impulse response controls. These are used to determine the Impulse Response mode (IR Sample mode or Synthesized IR mode), load or create impulse responses, and set the sample rate and length.
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, in which you can load and manipulate impulse response samples. See Use the Space Designer IR Sample mode in Final Cut Pro.
Sample Rate slider and Preserve Length button: The Sample Rate slider determines the sample rate of the loaded impulse response. Turn on Preserve Length to preserve the length of the impulse response when changing the sample rate. See Space Designer IR Sample rate in Final Cut Pro.
Length field: Adjust the length of the impulse response. See Space Designer impulse response lengths in Final Cut Pro.
Synthesized IR button: Click to activate Synthesized IR mode. A new synthesized impulse response is generated. This is derived from the values of the Length, envelope, Filter, EQ, and Spread parameters. See Space Designer Synthesized IR mode in Final Cut Pro.
You may freely switch between a loaded impulse response sample and a synthesized impulse response without losing the settings of the other. See Space Designer Synthesized IR mode in Final Cut Pro.
Important: To convolve (combine) 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.