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Low-pass filter design

Started by Hugo de Paula February 28, 2003
Hi everybody,

Low-pass filter design is considered trivial and Matlab makes it even
easier, but I would like some advice in this situation.

I would like a low-pass filter with attenuation in the transition
band of 30 dB. the transition band should be 5% of the cut-off
frequency. But the big problem is that I have a time constraint that
prevents me from using a filter of order more than 10.

I know it is almost impossible to achieve these condition. But I
would like some advice. I can relax a little in the transition band
up to 10%. I would like also to know which kind of filter is better
if you consider a flat pass-band as a desired feature.

Thanks in advance,

Hugo