Doubt in implementation of linear phase iir filter

Started by sham ganth in Matlab DSP18 years ago

Sir, Iam trying to implement Linear phase IIR filter in Matlab. Iam a Post Graduation Student from South india. I need your help....

Sir, Iam trying to implement Linear phase IIR filter in Matlab. Iam a Post Graduation Student from South india. I need your help. My basic refrence is "A technique to realize linear phase iir filter" by Powell and Chou. IEEE signal processing paper. Iam having doubt in


filter design to generate pink noise from white noise

Started by mrskulk in Matlab DSP17 years ago

hi, I neeeded help to generate correlated noise from white noise.What I am not able to design is the filter.I also do notknow...

hi, I neeeded help to generate correlated noise from white noise.What I am not able to design is the filter.I also do notknow how to represent white noise and pink noise in matlab.and how to design in matlab.My filter design is for a microphone system with audio range 0-


kaiser problem !

Started by kianogo in Matlab DSP17 years ago

Hi I am trying to design a kaiser filter. Just for testing I set wp=0.3 and ws=0.4 to get the lowpass version of the filter. ...

Hi I am trying to design a kaiser filter. Just for testing I set wp=0.3 and ws=0.4 to get the lowpass version of the filter. It seems changing the wp and ws does not swich between low- or highpass or the leads to exact changes of the stopband and passband regions a


image filter

Started by kianogo in Matlab DSP17 years ago

Anyone can help with designing exponentially increasing or decreasing image filter? the filtered image looks right but the...

Anyone can help with designing exponentially increasing or decreasing image filter? the filtered image looks right but the amplitudes are wrong !! s=10.*rand(8); %signal [f1 f2] = freqspace(8,'meshgrid'); r = sqrt(f1.^2 + f2.^2); F=exp(r.*30); FS=S.*F;


eigen filters

Started by mvrkm in Matlab DSP18 years ago

Hi all, I just want to know how to design an eigen filter using the passband frequency and the stopband frequency with some...

Hi all, I just want to know how to design an eigen filter using the passband frequency and the stopband frequency with some knowledge about a parameter alpha which is restricted between 0 and 1 and the length of the filter.somebody please help me. Thanks, mohan


2-D filtering

Started by Osman Arslan in Matlab DSP17 years ago

I would like to design a 2-D stopband filter and use it to filter some images in time domain. The butter() command can design...

I would like to design a 2-D stopband filter and use it to filter some images in time domain. The butter() command can design butterword stopband filters but it is 1-D. Thanks, Osman __________________________________


Paynter Filter Pole Locations

Started by larkjon in Matlab DSP16 years ago

I'm interested in equations for the pole locations of the Paynter filter. The publication "The Lightning Empericist" has the...

I'm interested in equations for the pole locations of the Paynter filter. The publication "The Lightning Empericist" has the equations for the even order Paynter filter pole locations, and for the third order pole locations, but no equations for higher odd order


Any hint as per how to filter out awgn?

Started by awe peter in Matlab DSP12 years ago 1 reply

Hi all. Please?i have a problem to solve. In my?signal processing through a multipath channel, i need to introduce awgn but i also realize that...

Hi all. Please?i have a problem to solve. In my?signal processing through a multipath channel, i need to introduce awgn but i also realize that the lower the SNR introduced the more?the BER.?I need to filter out this noise. Can anyone please help me?out?as per how to go about it in matlab. Thank you.? ?Correspondence Address: Awe, Olusegun Peter Electronic & Electrical Engineering Dept. Obaf...


Re: determining filter coefficients

Started by Anonymous in Matlab DSP21 years ago

Hi, I'd like to design some digital filters for an industrial analyser. Could somebody send me a subroutine to design a...

Hi, I'd like to design some digital filters for an industrial analyser. Could somebody send me a subroutine to design a band-pass filter and to determine the corresponding coefficients? Thanks in advance! Daniel


Echo Return Loss Enhancement(ERLE)

Started by ganesa1234 in Matlab DSP17 years ago

Dear Guys I am having some problem in calculating the ERLE for my simulations. Below is the code that i use to calculate the...

Dear Guys I am having some problem in calculating the ERLE for my simulations. Below is the code that i use to calculate the ERLE. % Pd=filter(1,[1, -0.98],d.^2); % Pe=filter(1,[1, -0.98],e.^2); % erle=10*log10(Pd./Pe) e = error d


implementation of filters?

Started by Anonymous in Matlab DSP19 years ago 1 reply

I am a new user for matlab. I need to know how to implement a filter of any kind without using the tool box . I mean only using...

I am a new user for matlab. I need to know how to implement a filter of any kind without using the tool box . I mean only using programming . If anyone has any example of a code of a digital filter of any kind ( making an echo effect for ex ) and applying it on a wav file ,plz send it to m


QMF Banks

Started by Appalayagari Sreedhar in Matlab DSP17 years ago

Respected All, I am Sreedhar, I am Reading Multirate DSP, In that I am interested in QMF Design, I read it as Perfet...

Respected All, I am Sreedhar, I am Reading Multirate DSP, In that I am interested in QMF Design, I read it as Perfet reconstruction filter, why is it so?. Are there any advantages using this Quadrature Mirror Filter bank. One More question? The Frequency response


comb filter?

Started by Anand Lakshmanan in Matlab DSP19 years ago 1 reply

Does anyone know how to design a comb filter using Matlab ...say for instance I need to allow freqz of 50 , 100 , 150 Hz only. ...

Does anyone know how to design a comb filter using Matlab ...say for instance I need to allow freqz of 50 , 100 , 150 Hz only. -thanks, -Anand.


Question about design a butterworth filter

Started by mmme8656 in Matlab DSP15 years ago

Hi, everyone, I just started to use matlab this semester. And my professor asked us to design a low pass filter using 'butter()' with - 65dB/Hz...

Hi, everyone, I just started to use matlab this semester. And my professor asked us to design a low pass filter using 'butter()' with - 65dB/Hz slope of roll-off. Can someone tell me how to use 'butter()' to specify the slope? Thanks.


Doubt

Started by getk_geethu in Matlab DSP12 years ago

I'm working on the implementation of Kalman filter for channel estimation of OFDMA systems using Matlab. But not able to succeed fully in the...

I'm working on the implementation of Kalman filter for channel estimation of OFDMA systems using Matlab. But not able to succeed fully in the same. Can we use Kalman filter when we use an inbuilt rayleigh channel in Matlab?? Thanks in advance..


FIR filter implementation

Started by QQ in Matlab DSP11 years ago

Hi, I'm implementing a FIR filter, which likes to be h[k] = (3/k^2 + 5/k)*sinc(k) + sinc^2(k)/k+(1/k^2+7/(2*k))*cos(pi*k). I'd like to make...

Hi, I'm implementing a FIR filter, which likes to be h[k] = (3/k^2 + 5/k)*sinc(k) + sinc^2(k)/k+(1/k^2+7/(2*k))*cos(pi*k). I'd like to make the sample index k between -10 and 10. The problem comes when k is 0 since k is the denominator. How do I solve this problem? Many thanks in advance! Best regards, Eunice


extended kalman filter

Started by abiglis in Matlab DSP19 years ago 1 reply

Hi Does anyone has or knows where can i find some matlab code for the extended kalman filter;; Thanks ...

Hi Does anyone has or knows where can i find some matlab code for the extended kalman filter;; Thanks


IIR filter

Started by ianovitch_ovinskil in Matlab DSP19 years ago 1 reply

Hello, I use Matlab to make treatment of the signal. I will like to make a filter IIR having a frequency response which is the...

Hello, I use Matlab to make treatment of the signal. I will like to make a filter IIR having a frequency response which is the reverse of that of reference. How can I do that?


kalman filter

Started by bcff...@yahoo.fr in Matlab DSP15 years ago 1 reply

hi can anyone send me some documents or tutorials about kalman filter for my final year project i have to use it in order to estimate clipped...

hi can anyone send me some documents or tutorials about kalman filter for my final year project i have to use it in order to estimate clipped values of speech signal thank you :you can send me a mail to: bcff_nadia@bcff...


triangular moving average filter

Started by emkatsogridakis in Matlab DSP12 years ago

Hi everyone! I need a little bit of help. I have a signal that i need to "smooth" in matlab, using a triangular moving average filter. I...

Hi everyone! I need a little bit of help. I have a signal that i need to "smooth" in matlab, using a triangular moving average filter. I searched the internet, and the best i found was the tsmovavg, which unfortunately doesn't work in my case. Any suggestions on how to do it, or which command i could use? Thanx in advance for all the help