Apple Impulse Response Utility - Manual (Page 9)

9
Setting Impulse Response Utility Parameters
Once you have created a new impulse response project, you will need to assign the
audio input and output device, monitor settings, and sweep generator settings.
Assigning Input and Output Hardware
You need to set up the audio input and output device in the Hardware I/O Assignment
area before you can use Impulse Response Utility.
The audio input selection determines the audio device used to record audio tracks. The
audio output selection determines the audio device used to monitor the recorded
signal, and to play back the generated sine sweep.
To select an audio input device:
m In the Audio Input menu, choose the desired audio interface driver.
To select an audio output device:
m In the Audio Output menu, choose the desired audio interface driver
Changing the Sample Rate
The Hardware I/O Assignments area also displays the current sample rate. You cannot
change the sample rate of your impulse response project in Impulse Response Utility. If
you want to record your audio tracks at a different sample rate, you will need to change
it in the Audio MIDI Setup utility, or in the software for your audio interface (if
applicable). Consult the documentation for your audio interface if you’re unsure.