title: Calibration of a soundcard in MATLAB
body: <p>I have designed a GUI to calibrate my sound card using MATLAB, I am able to record my input signal. I would like to calibrate my input.</p>
  
  <p>How do I do that?</p>
  
  <p>My GUI should be capable to adapt to different sound cards and get the <strong>dB</strong>V values, hence the Calibration is required. Any help would be appreciated.</p>