hani_al_yaz...@hotmail.com wrote:
> want to ask please about the following:
> the functions of designing   interpolation filter

Could you please be more precise about what you want or need?

hani_al_yazidi@hotmail.com writes:

> want to ask please about the following:
> the functions of designing   interpolation filter

Think of what an upsampled signal looks like in the frequency
domain before the interpolation filter. Then think about what
the Nyquist rate says about energy above Fs/2 (where Fs is the
upsampled rate).
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want to ask please about the following:
the functions of designing   interpolation filter