1. Introduction

     Sampling is essential to convert analog signal to digital signal. In this page, I would specifically
explain about downsampling. In digital signal processing, the decimator performs decimation, which is downsampling a signal.
In other words, when a digital signal is downsampled, the signal's sampling rate would be reduced.

2. Derivation

=

3. Example

If) D = 2

4. Conclusion

make sure to answer the question!!!!!!