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The answer to this is typically a full semester class for ElectricalDear All,
We calculate the IIR filter coefficient by
h(kt)=(2fc/fs)(sin{r(k)}/r(k))
r(k)=2*pi*fc*[k-(N-1)/2]/fs, k=0,1,2,3,....
pi=3.14159
but, how these equations come from?
Thanks a lot!
Best regards,
Boki.
bokiteam@ms21.hinet.net (boki) wrote in message news:<4c3c095a.0406032214.c697c7b@posting.google.com>...
Dear All,
We calculate the IIR filter coefficient by
h(kt)=(2fc/fs)(sin{r(k)}/r(k))
r(k)=2*pi*fc*[k-(N-1)/2]/fs, k=0,1,2,3,....
pi=3.14159
but, how these equations come from?
Thanks a lot!
Best regards,
Boki.
The answer to this is typically a full semester class for Electrical
Engineers. Most recently printed engineering textbooks on electronic
filters or DSP give a gory derivations. Lot's a math, and actually
more than one methodology for either IIR or FIR filters. It's not
something that can fit in a Usenet post.
MM
1. Use fourier series to contribute a desire filter curv(ac response)
2. find fourier series
3. convolution signal with series
4. Get the FIR.
Correct?
Thanks.
Boki.
mymantra@yahoo.com (Mantra) wrote in message news:<a6403f08.0406081329.6d177aee@posting.google.com>...
bokiteam@ms21.hinet.net (boki) wrote in message news:<4c3c095a.0406032214.c697c7b@posting.google.com>...
Dear All,
We calculate the IIR filter coefficient by
h(kt)=(2fc/fs)(sin{r(k)}/r(k))
r(k)=2*pi*fc*[k-(N-1)/2]/fs, k=0,1,2,3,....
pi=3.14159
but, how these equations come from?
Thanks a lot!
Best regards,
Boki.
The answer to this is typically a full semester class for Electrical
Engineers. Most recently printed engineering textbooks on electronic
filters or DSP give a gory derivations. Lot's a math, and actually
more than one methodology for either IIR or FIR filters. It's not
something that can fit in a Usenet post.
MM