Speed of Sound

Measure the speed of sound using a two-beam oscilloscope

Aim: To investigate the speed of sound in air using a two-beam oscilloscope and the phase difference between two microphones.

OSCILLOSCOPE
CH1 Speaker CH2 Microphone
f: 1000 Hz time/div: 0.20 ms V/div: 1.0

Oscilloscope controls

Trigger locks to CH1 so the display stays stable.
CH1 Speaker drive
Position (Y offset)
0.00 V
CH2 Microphone
Position (Y offset)
0.00 V