Interpolate/Decimate with a single filter?

1. Which filter is used in decimation and interpolation?
2. What is interpolated filter?
3. What is interpolation and decimation filters and why we need it?
4. What is decimation filtering?

Which filter is used in decimation and interpolation?

11.2 Polyphase Filter Structure and Implementation. Due to the nature of the decimation and interpolation processes, polyphase filter structures can be developed to efficiently implement the decimation and interpolation filters (using fewer number of multiplications and additions).

What is interpolated filter?

Interpolation (Digital Filter Design Toolkit) Interpolation is the process of increasing the sampling frequency of a signal to a higher sampling frequency that differs from the original frequency by an integer value. Interpolation also is known as up-sampling.

What is interpolation and decimation filters and why we need it?

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 decimation filtering?

Decimation (Digital Filter Design Toolkit) 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.