Info

A series of metal bars with increasing frequencies up to 30 kHz. Strike them in order and discover that the students can hear more of them than you can. A similar effect can be accomplished using a function generator and varying the frequency from 10 kHz to 20 kHz. An oscilliscope can also be set up to display visual confirmation.

Parts List

Stand with Pitch Bars in C. Oscillations and Waves, 1B

Metal Mallet in C. Oscillations and Waves, 1B

Amplifier in L. Misc

Function Generator in L. Misc

Speakers in L. Misc

Relevant Simulation

Demo Example:

Other Information

20 - 20,000 Hz Audio Sweep

Real-Life Examples

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More Advanced Reading

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