Superposition of Waves

Abstract

• Doppler Effect: If either a source of sound or a listener is moving with respect to the medium that carries the sound, the listener will perceive a different frequency than what was emitted. Let v be the speed of sound, vS be the speed of the source with respect to the medium, and vL be the speed of the listener with respect to the medium. (The direction from the listener to the source is taken to be positive.) If sound is emitted at