bitSuite
Example #1 - 440hz Fundamental
In the Audio Setup panel, click the speaker icon to engage the audio engine.
Select A above middle C (440hz) on the piano keyboard in the Pitch panel. On the right side of the panel, make sure that the box for only the lowest partial, the fundamental, is checked.
Observe how the string simulates a single oscillation, moving up and down. This is the simplest harmonic motion. Note the energy concentrated at 440hz in the sonogram, and a single corresponding spike on the spectrogram.
Now, try adding in upper partials. Adjust their respective levels using the red bars. Observe how the string, spectrograph, and sonogram change in response. Experiment with different pitches, and notice how the overtones expand and condense across the spectrograph.
