hello I want to design a lowpass filter using IFIR technique. I have designed the model filter ( prototype filter) but I have problems regarding design of interpolator. Plz help me wid that.. Anyone doesnt want to type here .. plz give ur contact no.. I am stuck wid this problem for the last 3 days.. Plz help Thanks
IFIR technique for designing filters
Started by ●September 5, 2010
Reply by ●September 6, 20102010-09-06
enricophpdsp wrote:> hello > I want to design a lowpass filter using IFIR technique. > > I have designed the model filter ( prototype filter) but I have problems > regarding design of interpolator. Plz help me wid that.. > > Anyone doesnt want to type here .. plz give ur contact no.. I am stuck wid > this problem for the last 3 days..Your problem is very difficult. I would be glad to solve it. What would you do for me in return ? Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
Reply by ●September 6, 20102010-09-06
On Sun, 05 Sep 2010 13:05:46 -0500, "enricophpdsp" <enricophpdsp@n_o_s_p_a_m.yahoo.com> wrote:>hello >I want to design a lowpass filter using IFIR technique. > >I have designed the model filter ( prototype filter) but I have problems >regarding design of interpolator. Plz help me wid that.. > > >Anyone doesnt want to type here .. plz give ur contact no.. I am stuck wid >this problem for the last 3 days.. >Plz help > > >ThanksHello enricophpdsp, from exactly what document did you learn, what you know, about IFIR filters? That document should tell you how to design an IFIR filter. [-Rick-]
Reply by ●September 6, 20102010-09-06
> > >enricophpdsp wrote: > >> hello >> I want to design a lowpass filter using IFIR technique. >> >> I have designed the model filter ( prototype filter) but I haveproblems>> regarding design of interpolator. Plz help me wid that.. >> >> Anyone doesnt want to type here .. plz give ur contact no.. I am stuckwid>> this problem for the last 3 days.. > >Your problem is very difficult. >I would be glad to solve it. >What would you do for me in return ? > >Vladimir Vassilevsky >DSP and Mixed Signal Design Consultant >http://www.abvolt.com >@vladimir.. Plz tell the solution then. and what do u want to be done by me in return
Reply by ●September 6, 20102010-09-06
>On Sun, 05 Sep 2010 13:05:46 -0500, "enricophpdsp" ><enricophpdsp@n_o_s_p_a_m.yahoo.com> wrote: > >>hello >>I want to design a lowpass filter using IFIR technique. >> >>I have designed the model filter ( prototype filter) but I have problems >>regarding design of interpolator. Plz help me wid that.. >> >> >>Anyone doesnt want to type here .. plz give ur contact no.. I am stuckwid>>this problem for the last 3 days.. >>Plz help >> >> >>Thanks > >Hello enricophpdsp, > from exactly what document did you learn, >what you know, about IFIR filters? >That document should tell you how >to design an IFIR filter. > >[-Rick-] >I learnt it from a IEEE paper.. but no specifications have been given on designing the interpolator.
Reply by ●September 6, 20102010-09-06
On 9/6/2010 8:30 AM, enricophpdsp wrote:>> On Sun, 05 Sep 2010 13:05:46 -0500, "enricophpdsp" >> <enricophpdsp@n_o_s_p_a_m.yahoo.com> wrote: >> >>> hello >>> I want to design a lowpass filter using IFIR technique. >>> >>> I have designed the model filter ( prototype filter) but I have problems >>> regarding design of interpolator. Plz help me wid that.. >>> >>> >>> Anyone doesnt want to type here .. plz give ur contact no.. I am stuck > wid >>> this problem for the last 3 days.. >>> Plz help >>> >>> >>> Thanks >> >> Hello enricophpdsp, >> from exactly what document did you learn, >> what you know, about IFIR filters? >> That document should tell you how >> to design an IFIR filter. >> >> [-Rick-] >> > > > > I learnt it from a IEEE paper.. but no specifications have been given on > designing the interpolator.http://www.qualitybyrich.com/pdfs/projs/een536cs1.pdf is an IEEE paper..... ?? That's probably because interpolation is a topic that has lots of coverage. - intersperse zeros to increase sample rate - replicates the frequency response. - lowpass filter to interpolate (or your favorite method for doing this) - gets rid of the replications. Fred
Reply by ●September 6, 20102010-09-06
On 9/6/2010 5:50 AM, Rick Lyons wrote:> On Sun, 05 Sep 2010 13:05:46 -0500, "enricophpdsp" > <enricophpdsp@n_o_s_p_a_m.yahoo.com> wrote: > >> hello >> I want to design a lowpass filter using IFIR technique. >> >> I have designed the model filter ( prototype filter) but I have problems >> regarding design of interpolator. Plz help me wid that.. >> >> >> Anyone doesnt want to type here .. plz give ur contact no.. I am stuck wid >> this problem for the last 3 days.. >> Plz help >> >> >> Thanks > > Hello enricophpdsp, > from exactly what document did you learn, > what you know, about IFIR filters? > That document should tell you how > to design an IFIR filter. > > [-Rick-]enricophpdsp, Dude! You got a reply from THE MAN!! e.g. Lyons: Turbocharging Interpolated FIR Filters DSP Tips&Tricks IEEE Signal Processing Magazine Sept 2007. http://ieeexplore.ieee.org You might buy his book. Fred
Reply by ●September 6, 20102010-09-06
enricophpdsp wrote:>> >>enricophpdsp wrote: >> >> >>>hello >>>I want to design a lowpass filter using IFIR technique. >>> >>>I have designed the model filter ( prototype filter) but I have > > problems > >>>regarding design of interpolator. Plz help me wid that.. >>> >>>Anyone doesnt want to type here .. plz give ur contact no.. I am stuck > > wid > >>>this problem for the last 3 days.. >> >>Your problem is very difficult. >>I would be glad to solve it. >>What would you do for me in return ?> @vladimir.. Plz tell the solution then. and what do u want to be done by me > in returnThis is business. I think that the the minimum wage x 3 days of your time is fair price. Check or paypal. My contact is at the web site. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
Reply by ●September 6, 20102010-09-06
On 6.9.10 8:25 , Vladimir Vassilevsky wrote:> > > enricophpdsp wrote: > >>> >>> enricophpdsp wrote: >>> >>> >>>> hello >>>> I want to design a lowpass filter using IFIR technique. >>>> >>>> I have designed the model filter ( prototype filter) but I have >> >> problems >> >>>> regarding design of interpolator. Plz help me wid that.. >>>> >>>> Anyone doesnt want to type here .. plz give ur contact no.. I am stuck >> >> wid >> >>>> this problem for the last 3 days.. >>> >>> Your problem is very difficult. >>> I would be glad to solve it. >>> What would you do for me in return ? > >> @vladimir.. Plz tell the solution then. and what do u want to be done >> by me >> in return > > This is business. I think that the the minimum wage x 3 days of your > time is fair price. Check or paypal. My contact is at the web site. > > > Vladimir Vassilevsky > DSP and Mixed Signal Design Consultant > http://www.abvolt.comThe OP seems to be an Indian student trying to get a design without letting the knowledge to touch his brain. He has posted a bunch of clueless questions. We are happy to lead to the correct direction, but we are not going to do his job for him. -- Tauno Voipio tauno voipio (at) iki fi
Reply by ●September 6, 20102010-09-06
Tauno Voipio wrote:> On 6.9.10 8:25 , Vladimir Vassilevsky wrote: > >> >> >> enricophpdsp wrote: >>>>>>> Anyone doesnt want to type here .. plz give ur contact no.. I am stuck >>>>> this problem for the last 3 days.. >>>> >> >> This is business. I think that the the minimum wage x 3 days of your >> time is fair price. Check or paypal. My contact is at the web site. >> > > The OP seems to be an Indian student trying to get a design > without letting the knowledge to touch his brain. He has > posted a bunch of clueless questions. > > We are happy to lead to the correct direction, but we > are not going to do his job for him.Why not? I have nothing against students and I don't mind getting paid for doing homeworks. The earlier some people realize that they are not going to become rock stars, professional athletes or electronic engineers, the better is for everybody. VLV
