On Oct 9, 9:16=A0am, cs_post...@[EMAIL PROTECTED]
wrote:
> On Oct 8, 7:47 pm, move <liubeny...@[EMAIL PROTECTED]
> wrote:
>
> > I am wonderring whether i could reduce the taps of CICcomp filter is
> > that the ciccomp filter design in matlab could not be implemented in a
> > multistage manner. ('cause the shape in the passband is not flat and
> > inv-sinc), when the taps of filter exceed the number of input, i
> > reckon the filter not a success one or padding zeros is needed to make
> > the input length N+L-1. but once the situation is time critial (in a
> > frame), padding zeros is not valid.
>
> You have a more fundamental issue to confront: what makes you think it
> is legitimate to process each frame individually?
>
> What do the frames represent?
>
> What type of lowpass characteristic do you think you are going to be
> able to achieve within these short chunks of data?
1,2 You are right ! The data acquired between frames are relevant, So
it is legitimate to process as a continuous stream.
3. the LPF should achieve
FS=3D5MHz, fp=3D9k, fst=3D10k, ap=3D0.1, ast=3D100, decimator=3D100
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