AudioScope
Same Pitch. Different Buzz?
Hear how changing pulse width from 50% to 25% changes the harmonics while both waves repeat at 220 Hz.
What to listen for
Both waves repeat 220 times per second. A stays high for half of each cycle. B stays high for one quarter. In these band-limited examples, the second harmonic at 440 Hz is absent in A and present in B. The steady digital RMS is matched.
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