Downsampling

Downsampling is a common technique in the field of

. It is a method used for decreasing the sampling rate of a signal by removing data points. Downsampling is a specific case of .

Because it assumes regular sampling, downsampling is most often applied in

in which the discrete signals are represented as a sequence of data points. The process of downsampling removes data points from the original signal in order to reduce data volume and/or computational complexity.