interpolation filter designing

b=intfilt(r,n,alpha)

r = factor of sampling =4

b  has a lengh of (n+1)*r   for n even

and a lengh of (n+1)*r -1    for n odd


1___   if we have the signal of lengh 1024

          n=..... how much in this case????

2____ in some books alpha =1  but in other books aplpha =0.5

         what are the different????????

On Oct 16, 5:49 pm, hani_al_yaz...@hotmail.com wrote:
> b=intfilt(r,n,alpha)
>
> r = factor of sampling =4
>
> b  has a lengh of (n+1)*r   for n even
>
> and a lengh of (n+1)*r -1    for n odd
>
> 1___   if we have the signal of lengh 1024
>
>           n=..... how much in this case????
>
> 2____ in some books alpha =1  but in other books aplpha =0.5
>
>          what are the different????????

Your question appears to be underspecified - can you provide more
info. Where is the function "intfilt()" coming from? Is this in
Matlab? If so, don't they explain what the functions are somewhere?