Apple Impulse Response Utility - Manual (Page 13)

13
Recording Audio Into Impulse Response Utility
Once you have selected your hardware assignments, and configured the monitor and
sine sweep sections, it’s time to start recording audio tracks.
Recording in Impulse Response Utility consists of three basic steps:
1 Select an audio track in the Inputs/Tracks section.
2 Configure the audio track for recording.
3 Repeat this step for each track required by the chosen format.
4 Click the Sweep/Record button to begin recording.
If you are using the sweep generator, you will hear the sine wave sweep up through its
frequency range. Impulse Response Utility will record the result onto the selected audio
track(s).
If you have set the sweep generator to Off. Click Record, and shoot your starter pistol.
Impulse Response Utility will record the resulting impulse response onto the selected
track.
To select an audio track, do one of the following:
m Click in the desired track lane.
m Use the Up and Down Arrow keys to navigate through the track list.
Configuring Audio Tracks for Recording
The Inputs/Tracks section is automatically filled with the number of tracks required for
the impulse response recording, based on your selections in the New Impulse
Response Project dialog. Every track lane in the Inputs/Tracks section has a number of
parameters. Some are automatically configured by Impulse Response Utility; others you
will need to set before recording.
Track Parameters
 Speaker Position menu: Selects the speaker position label for the selected track. Both
Impulse Response Utility and Space Designer use these labels to identify, and
process, the audio files that comprise a multi-channel stereo or surround impulse
response. Impulse Response Utility automatically sets the speaker position label for
each track, but you can change these labels to any other position (available in the
current impulse response format), if desired.