FPGA Central

Hello,

I am studying FIR filters. But I am really confused with filter
coefficients for FIR filters. What are filter coefficients and what
exactly is a delay line. I couldn't find any text regarding this.

Any links for the same are welcome. Please help me out.

Thanks and regards
--Himanshu

On 22 Apr 2005 19:27:48 -0700, "Himanshu Chauhan"
<[email protected]> wrote:

>Hello,
>
>I am studying FIR filters. But I am really confused with filter
>coefficients for FIR filters. What are filter coefficients and what
>exactly is a delay line. I couldn't find any text regarding this.
>
>Any links for the same are welcome. Please help me out.
>
>Thanks and regards
>--Himanshu

Hi,

check the following webpage:

http://www.dspguru.com/info/faqs/firfaq.htm

Good Luck,
[-Rick-]

"Rick Lyons" <R.Lyons@_BOGUS_ieee.org> wrote in message
news:[email protected]..
> On 22 Apr 2005 19:27:48 -0700, "Himanshu Chauhan"
> <[email protected]> wrote:
>
>>Hello,
>>
>>I am studying FIR filters. But I am really confused with filter
>>coefficients for FIR filters. What are filter coefficients and what
>>exactly is a delay line. I couldn't find any text regarding this.
>>
>>Any links for the same are welcome. Please help me out.
>>
>>Thanks and regards
>>--Himanshu
>
> Hi,
>
> check the following webpage:
>
> http://www.dspguru.com/info/faqs/firfaq.htm
>
> Good Luck,
> [-Rick-]

And check this one too if you have access to Matlab:

http://users.ece.gatech.edu/mcclella/matlabGUIs/

These appear to be very useful tools for learning in an easy way!

Fred

I was reading DSP guru faq and after that I asked this question.
Thanks.
This http://www.aerospacesoftware.com/fir.htm also helped me alot.

Thanks and regards
--Himanshu

> > http://www.dspguru.com/info/faqs/firfaq.htm
> >

Himanshu Chauhan wrote:
> Hello,
>
> I am studying FIR filters. But I am really confused with filter
> coefficients for FIR filters. What are filter coefficients and what
> exactly is a delay line. I couldn't find any text regarding this.
>
> Any links for the same are welcome. Please help me out.

Let's take your questions in reverse order. A delay line is
analogous to a shift register where the "bits" can be
multi-valued.

The coeficients of a filter are the values that are
multiplied one to one with the values in the delay line and
summed to produce one cycle of output before the delay line
is shifted for the next cycle.


Bob
--

"Things should be described as simply as possible, but no
simpler."

A. Einstein