Can you point to features in the spectrograms that correspond to the changing tones (or pitch) in the sounds your hear?
Do you see any harmonics? Did you hear any?
Listen very carefully to the sound and try to identify as many features of the spectrogram as possible.
Compare the synthesized notes in Beethoven's Fifth to the real sounds made by the piano in Fur Elise.
Go back up to continue.
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McClellan, Schafer, and Yoder, Signal Processing First, ISBN 0-13-065562-7.
Prentice Hall, Upper Saddle River, NJ 07458.
© 2010 Pearson Education, Inc.