Speed of Sound
Measure the speed of sound using a two-beam oscilloscope
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.
Timebase (time/div)
0.05 ms/div
0.10 ms/div
0.20 ms/div
0.50 ms/div
1.00 ms/div
2.00 ms/div
5.00 ms/div
CH1
Speaker drive
Vertical scale (V/div)
0.2 V/div
0.5 V/div
1.0 V/div
2.0 V/div
5.0 V/div
Position (Y offset)
Down
Up
0.00
V
CH2
Microphone
Vertical scale (V/div)
0.2 V/div
0.5 V/div
1.0 V/div
2.0 V/div
5.0 V/div
Position (Y offset)
Down
Up
0.00
V
Zero offsets