Microphone

The Microphone can be used to display and study the waveforms of sounds from voices and musical instruments. It is also great for speed of sound experiments. Suggested Experiments Demonstrate how the wave pattern changes when frequency and amplitude are changed Compare the waveforms from various musical instruments Have students capture the waveform of the sound of a tuning fork and model the sine wave using a function Measure the speed of sound by using reflected sound waves in a tube Demonstrate beat patterns Determine the period and then the frequency of a sound by measuring the time between peaks on the waveform Display the fast Fourier transform (FFT) of a sound

Measuring the sound level of a whistle

Example Graph showing sound level of whistling