Calibrating Your Audio System In order to ensure sample accurate recording you may need to calibrate your audio system. Note that if you change input types (from analog to SPDIF for example) or add a digital mixer you may need to re-calibrate. The following are the steps needed to do this calibration. Make sure that your audio output is sending a signal to your audio input. For example, send your sound manager output to a mixer and send the mixers output to your sound manager input. Choose new from the file menu and Import an audio file to track one. Any audio file is sufficient although a more percussive file such as "Drum Loop 120" will work better. Make sure the track with the imported audio has an Output assigned that outputs to the audio port you want tested and that the input is connected properly. Record enable track two and assign an audio output to it. Press return and play and verify that you have both an output signal on track one and an input signal on track two by observing the track level meters. Press return and record. After a few seconds press stop. Arrange your graphic editor so that track one is on top and track two is on the bottom. Make sure that Zero Crossings is off in the switches menu. Zoom in as far as possible and make a selection so that a particular peak of track one aligns with the corresponding peak of track two. Select set selection from the edit menu. Click on capture current selection and copy the number of samples from the duration field. Paste this number into the Audio Track to Track alignment field of the Advanced Dialog accessed from the digital audio setup dialog of the setup menu. Successive recordings will yield sample accurate audio tracks.