Higher Physics

Particles and Waves - Activity 2

Interference of sound

Aim - To  investigate the interference pattern produced by two sources of sound     Instructions  - This experiment requires your computer to have a sound card and speakers installed.
Both loudspeakers are connected to the same output terminals of the signal generator and are approximately 2 m apart.
The frequency of the signal generator is set to 300 Hz.
  • Start the boy walking and listen to the effect on the loudness of the sound heard.
  • Confirm that the points of constructive interference occur where you would expect them to.
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