Filter

Design of efficient digital interpolation filter

Design of efficient digital interpolation filter
  1. What is the effect of interpolation on filter design?
  2. What is interpolation filter?

What is the effect of interpolation on filter design?

The interpolation filter then uses the lowpass FIR filter H(z) to remove the images. Therefore, this lowpass FIR filter is an anti-imaging filter. The interpolation filter then returns an output signal y(n) with the new sampling frequency.

What is interpolation filter?

In the domain of digital signal processing, the term interpolation refers to the process of converting a sampled digital signal (such as a sampled audio signal) to that of a higher sampling rate (Upsampling) using various digital filtering techniques (for example, convolution with a frequency-limited impulse signal).

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