Wave interference and Beat Frequency

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Beat Frequency.

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Wave interference and Beat Frequency And you

Wave interference

BEATS Periodic and repeating fluctuations heard in the intensity of a sound when two sound waves of similar frequencies interfere with each other.

Multiple frequency interference (music when a mathematical relationship is present)

The beat frequency = the difference in the frequency of the two notes. Ex: 2 sound waves with 256 and 254 Hz are played at the same time, a beat frequency of 2 Hz will be detected.

Destructive interference = 1 peak1 + trough2 = cancel out = 0 amplitude = no sound 2 Constructive interference = peak1 + peak2 = double amplitude = double the sound (also with trough and trough)

pHET simulation with questions