Pakistan study notes for Matric, Intermediate, B.A, B.COM BSC, M.A, BCS. Free Pakistani Urdu educational school, colleges and University notes.

BEAT FREQUENCY

BEATS

Beats can be defined as the periodic variation in the intensity of sound at a given point due to superposition of two waves having slightly different frequencies.

EXPLANATION WITH EXAMPLE

If two tuning forks of slightly different frequencies are set to vibrate simultaneously, we hear a sound and low intensity. This is called a beat and phenomenon is called Beats.

BEAT FREQUENCY

Beat frequency is the no of beats one hear in one second. It is defined as the difference infrequency b/w two sounds.

The maximum beat frequency that a human ear can detect is 7 beats/seconds.

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