PURPOSE: To validate Ohm's Law of Hearing for a simple case.
DESCRIPTION: Form a complex tone from the first and second harmonics, with the amplitude of the second harmonic about half that of the first and a fundamental frequency of about 200-500 Hz. Changing the phase of the second harmonic changes the wave shape but leaves the sound virtually unchanged. This is Ohm's Law of Hearing.
REFERENCES: (PIRA unavailable.)
EQUIPMENT: Fourier Synthesizer with speaker and oscilloscope on scope/TV cart.
SETUP TIME: 5 min.
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