# What is Aperiodic Signal and periodic Signal?

Posted On: Sep 23, 2020

• Periodic Signal: A periodic signal always repeats over a cycle of time or regular interval of time. If a periodic signal repeats its pattern after a period it is called a periodic signal. A function e.g. f(x) here can be periodic if and only if it satisfies the following equation..

➤f(x + p) = f(x)

Example: The sinusoidal signal is periodic having periodicity value of 2π

• Aperiodic Signal: It is a signal which does not repeat its pattern over a period. For example, the signal created by a telephone when one or two words are pronounced is aperiodic.

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