Interpolation filter matlab

1. What is interpolation filter?
2. How do you do interpolation in MATLAB?
3. What does filter () do in MATLAB?

What is interpolation 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.

How do you do interpolation in MATLAB?

vq = interp1( x , v , xq ) returns interpolated values of a 1-D function at specific query points using linear interpolation. Vector x contains the sample points, and v contains the corresponding values, v(x). Vector xq contains the coordinates of the query points.

What does filter () do in MATLAB?

Filters are data processing techniques that can smooth out high-frequency fluctuations in data or remove periodic trends of a specific frequency from data. In MATLAB^®, the filter function filters a vector of data x according to the following difference equation, which describes a tapped delay-line filter.