Visual Representation of Time Decimation Decimation in Time Visual Representaion of Time Decimation.
Decimation is the process of breaking down something into it's constituent parts.
Decimation in time involves breaking down a signal in the time domain into smaller signals, each of which is easier to handle. We start by taking this signal and breaking it down into two equal parts, made up of the odd and even numbered samples. This process of decimating the signal can easily be visualised. The Recombine Algebra mentioned in the diagram is just used to combine the samples again in the correct order. How this is done is covered in more detail in the Buterfly section.