Assignment 2

As in real life, lengthening the string lowers the pitch.

giving a scalar for the r parameter creates a 3-point inverting FIR lowpass filter at the bridge:
[\frac{-1}{r+2}, \frac{-r}{r+2}, \frac{-1}{r+2}]

r=1 makes a 3-point moving-average lowpass filter, leading to a quick decay. As r gets large, the 2 side points become less significant, and the filter looks more and more like an impulse, lessening the damping effect. As r gets close to zero, the filter starts letting more high-frequency energy through.

All the spectrograms are with 2048 point windows with 100,000 samples sampled at 44100 Hz, and a waveguide length of 100 samples.

r01.png
r4.png
r20.png
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