How to calculate FIR filter coefficients?

Started by talh...@yahoo.com July 5, 2011
hi,

I am trying to implement digital FIR filter in my DSP kit. I don't know how to calculate the FIR coefficients. I know the order, sampling frequency and my signal bandwidth. I want to design Multi band pass filter.
Can anyone help me in this regard and may be e mail me the procedure. It would be very much grateful.

My id is (t...@yahoo.com)

Thanks.
Hi Talha,

It depends on what exactly is it that you want to design. Do you want a high
pass filter? a low pass filter?
Decide on what kind of filter you need, the order just tells you the number
of coefficients that you have (or the number of past inputs that the current
output will depend on)..
One suggestion for you is, use the filter design toolbox in matlab, specify
the order, the sampling frequency, the cutoff frequency etc. and choose FIR
as your filter design. As for the window type, you can go with any or play
around with what suits your application. Once you do that in matlab, check
the filter coefficients that matlab has generated for you, there goes your
coefficients.. All the best..

On Tue, Jul 5, 2011 at 8:46 AM, wrote:

> **
> hi,
>
> I am trying to implement digital FIR filter in my DSP kit. I don't know how
> to calculate the FIR coefficients. I know the order, sampling frequency and
> my signal bandwidth. I want to design Multi band pass filter.
> Can anyone help me in this regard and may be e mail me the procedure. It
> would be very much grateful.
>
> My id is (t...@yahoo.com)
>
> Thanks.
>
>

--
Syed Ahmar Shah