Apple Impulse Response Utility - Manual (Page 25)

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The Auralization Approach
Another common strategy for placing speakers and microphones in a space uses the
auralization approach. This technique attempts to capture the reflections from the
performer’s perspective. Place one or more speakers at the performer’s location (or
another audio source) and place the microphone at the listening position. The resulting
impulse response (when later used in Space Designer) should sound like your audio is
being played back from the specific location in which the speakers were placed. For
example, you can make a stereo impulse response of a particular stage using the
auralization technique, and when you use the IR in Space Designer, your audio should
sound like it is on that stage. The image below illustrates use of the auralization
technique to set up your speakers and microphones for a true stereo impulse response.
To capture a surround impulse response that represents being “in the audience” of a
space, set up two speakers in the performer’s position as above, but place a surround
array of microphones around the room. This can create a realistic feeling (and effect) of
being “in the audience” when the performance is coming from in front of you. This can
help to create a surround-like effect from a live stereo recording.
Stage
Audience
L R