What is decimation in signal processing

1. What is decimation of a signal?
2. What was the purpose of decimation?
3. What is decimation and interpolation?
4. What is the importance of decimation for a given signal?

What is decimation of a signal?

Decimation is the process of reducing the sampling frequency of a signal to a lower sampling frequency that differs from the original frequency by an integer value. Decimation also is known as down-sampling.

What was the purpose of decimation?

The discipline was used by senior commanders in the Roman army to punish units or large groups guilty of capital offences, such as cowardice, mutiny, desertion, and insubordination, and for pacification of rebellious legions. The word decimation is derived from Latin meaning "removal of a tenth".

What is decimation and interpolation?

Decimation and interpolation are the two basic building blocks in the multirate digital signal processing systems. The decimator is utilized to decrease the sampling rate and interpolator to increase the sampling rate.

What is the importance of decimation for a given signal?

The most immediate reason to decimate is simply to reduce the sampling rate at the output of one system so a system operating at a lower sampling rate can input the signal.