FPGA Central

Is there any applications where one would want to use a filter wit
sinusoidal or linear group delay in stead of one that is constant in th
pass band for pusle shaping?

westocl wrote:
> Is there any applications where one would want to use a filter with
> sinusoidal or linear group delay in stead of one that is constant in the
> pass band for pusle shaping?

Could you achieve one if you wanted it? how?

Jerry
--
Engineering is the art of making what you want from things you can get.
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>westocl wrote:
>> Is there any applications where one would want to use a filter with
>> sinusoidal or linear group delay in stead of one that is constant i
the
>> pass band for pusle shaping?
>
>Could you achieve one if you wanted it? how?
>
>Jerry
>--
>Engineering is the art of making what you want from things you can get.
>ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï ¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿ ½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï ¿½ï¿½ï¿½ï¿½ï¿½
>

I can achieve a controlled sinusoid for groupdelay and I have done som
linear group delay filters.

I could post some coefficents if you would like to see a couple. I ca
keep the group 'DC offset group delay' on which the sinusoid ride
realitively low compared to the order of the filter also. Im just not sur
of thier usefulness.

I was reading the IEEE paper 'Optimal Design of Complex FIR Filters With
Arbitrary Magnitude and Group Delay Responses' and thought it would b
cool to try to do some of the same or diffrent things.