Calibrating Your Audio System

In order to ensure sample accurate recording you may need to calibrate youraudio system. Note that if you change input types (from analog to SPDIF forexample) or add a digital mixer you may need to re-calibrate. The following are thesteps needed to do this calibration.

  1. Make sure that your audio output is sending a signal to your audio input. Forexample, send your sound manager output to a mixer and send the mixers outputto your sound manager input.

  2. 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.

  3. 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.

  4. 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.

  5. Press return and record. After a few seconds press stop. Arrange your graphiceditor so that track one is on top and track two is on the bottom.

  6. Make sure that Zero Crossings is off in the switches menu. Zoom in as far aspossible and make a selection so that a particular peak of track one aligns withthe corresponding peak of track two.

  7. Select set selection from the edit menu. Click on capture current selectionand copy the number of samples from the duration field.

  8. Paste this number into the Audio Track to Track alignment field of theAdvanced Dialog accessed from the digital audio setup dialog of the setup menu.

Successive recordings will yield sample accurate audio tracks.

Calibrating Your Audio System