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The purpose of the output level calibration is to be able to measure the gain of the impulse response/transfer function with the correct units. To calibrate the output of the measurement system is only needed if you are using the output (not if you are measuring input signals only).
To method for calibrating the output is very similar to the method for calibrating the input. If you choose to use the sound card input to measure the levels during the output calibration, it is required that the input is calibrated first. Therefore we strongly recommend that you perform the input calibration before doing the output calibration.
First determine if you are going to do a combined (EASY) calibration or an individual (ADVANCED) calibration. This will be explained in the next section.
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