The file rsa.mat contains two signals measured from a human subject: instantaneous lung volume and heart rate at three different frequencies of breathing. Use the grid search method to fit a sine wave to each signal and determine the frequency response of heart rate to lung volume at each frequency. Does the frequency response change with frequency?
The attached images show how the question should be answered and what it should look like, as well as the data that needs to be plugged in. MATLAB CODE
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