Finding the Least-damped Modes

(10 pts) Find the frequencies of the three least-damped modes in the guitar body impulse response (gtrbody.wav). A quick way to find these is to take an FFT of a portion of the response where most of the modes have decayed considerably (e.g., after 125 ms) and only a few strong modes are left. To get a more accurate estimate of the peak frequency, you can zero-pad and/or use parabolic fitting on a dB scale. This is documented at
http://ccrma.stanford.edu/~jos/parshl/Peak_Detection_Steps_3.html.