ARMA

Started by Akif CEYLAN in Matlab DSP20 years ago

hi all, how can i realize an ARMA model filter in matlab does anyone help me? i also read the help comments on tf2latc ' TF2LATC...

hi all, how can i realize an ARMA model filter in matlab does anyone help me? i also read the help comments on tf2latc ' TF2LATC Transfer function to lattice filter conversion' but i didn't understand how can i do? thx for all your helps. CEYLAN


comb filter and distortion

Started by egan_nc in Matlab DSP18 years ago

Hi, I am designing a 3 stages decimation filter for a second order 1 bit delta sigma modulator. The sampling rate of DSM is...

Hi, I am designing a 3 stages decimation filter for a second order 1 bit delta sigma modulator. The sampling rate of DSM is 1.536Mhz. The bandwidth for the input signal is 4Khz. For the first stage I used matlab's function cicdecimate with the following parameters:


Gabor filter in Matlab

Started by jidnya shah in Matlab DSP18 years ago

Hello, Has anybody implemented an even symmetric Gabor filter on fingerprints in Matlab? Any help will be highly appreciated. ...

Hello, Has anybody implemented an even symmetric Gabor filter on fingerprints in Matlab? Any help will be highly appreciated. Awaiting a sooner reply, Thanks, Jidnya


Calculating Attenuation factor for Butterworth filter

Started by kaanthsap in Matlab DSP15 years ago

Hi, I was wondering if any one can help me or point to any references which can help me calculate the attenuation factor of a third...

Hi, I was wondering if any one can help me or point to any references which can help me calculate the attenuation factor of a third order Butterworth Bandpass filter. Thanks Kaanth.


FIlter Design

Started by CH R in Matlab DSP19 years ago 1 reply

Hi I am implementing FIR Filtrs in Matalb. I have basic doubts in this. Actually i know the cutoff frequencies and the Q factor...

Hi I am implementing FIR Filtrs in Matalb. I have basic doubts in this. Actually i know the cutoff frequencies and the Q factor for my filter design. I want to implement Lowpass, Bandpass and Higpass Filters(FIR). Can you pl somebody help me out in giving the suggetions.


2-D filter matrix

Started by Appalayagari Sreedhar in Matlab DSP19 years ago 1 reply

Dear all, I am trying to design the 2-D fir filter. i am using the meshgrid command and calculating the frequencies. it returns...

Dear all, I am trying to design the 2-D fir filter. i am using the meshgrid command and calculating the frequencies. it returns with the values of certain dimension, for eg, meshgrid(9) it returns the 9x9 matrix value. can anyone explain why we need


How to decide the Band Pass filter Frequency range

Started by "Ahmad, Nihal IN BLR SISL" in Matlab DSP15 years ago

Hi all, I have one time domain signal, on which I have to apply the band pass filter. How can I decide the Band Pass Frequency range? I am...

Hi all, I have one time domain signal, on which I have to apply the band pass filter. How can I decide the Band Pass Frequency range? I am calculating the power of signal and plotting it on MATLAB i.e. frequency response. I am searching the frequency points, where the power has it's maximum value. Is it the right way to search band pass filter frequency range? The [ h, f ] = freqz(); functio...


Re: Re: determining filter coefficients

Started by Anonymous in Matlab DSP21 years ago

MATLAB has several filter design routines in the signal processing toolbox. For FIR filters, remez() would be the most...

MATLAB has several filter design routines in the signal processing toolbox. For FIR filters, remez() would be the most commonly used. For IIR filters, try butter(), cheby1(), cheby2(), ellip(), or maxflat(), depending on what type of response you want. Gle


Specifications of Band pass filter

Started by arur...@yahoo.co.in in Matlab DSP15 years ago 2 replies

hi every body, i am implementing a Band pass FIR filter,my centre freq is 5k and by band of interest is 2.5k to 7.5k.My doubt is how to make...

hi every body, i am implementing a Band pass FIR filter,my centre freq is 5k and by band of interest is 2.5k to 7.5k.My doubt is how to make decission on passband freq1,passband freq2,stopbandfreq1,stopbandfreq2. please let me know.


workspace coefficients in Simulink

Started by Nalin Pithwa in Matlab DSP19 years ago 1 reply

Hello, I am using MATLAB and Simulink based DSP/Communications Blockset in my application. I need a small help. In the design...

Hello, I am using MATLAB and Simulink based DSP/Communications Blockset in my application. I need a small help. In the design of my system, one of the blocks is a FIR filter. The filter coefficients are generated during run-time and they change adaptively. How can


comb filter

Started by egan_nc in Matlab DSP19 years ago

Hi everyone, I am trying to design a 3rd order with decimation ratio of 8 comb filter using matlab's cicdecimate function. The...

Hi everyone, I am trying to design a 3rd order with decimation ratio of 8 comb filter using matlab's cicdecimate function. The input signal is the 1 bit output of a delta sigma modulator. According to the example on matlab, I should set up the file as follow. M = 1; % Different


Smoothing Filter

Started by Craig Doolittle in Matlab DSP19 years ago 2 replies

Hello All, I am interested in "smoothing" data. I know this is a very simple filter, but it is quick and dirty. For a 5 point...

Hello All, I am interested in "smoothing" data. I know this is a very simple filter, but it is quick and dirty. For a 5 point smoothing function, I would like to return Y of data X where: Y(n) = { X(n-2) + X(n-1) + X(n) + X(n+1) + X(n+2) } * 1/5 I can do


MATLAB Adaptive algo doubts

Started by gmukund_2000 in Matlab DSP20 years ago

Hi, I was going thru a code for implementing the NLMS algorithm. I had a few doubts about it. Why has the MATLAB 4 generator been...

Hi, I was going thru a code for implementing the NLMS algorithm. I had a few doubts about it. Why has the MATLAB 4 generator been called in the first 2 lines. Why is the order of the adaptive filter 32? Is it necessary to initially give a zero value to the weights of the filter


How to use simulink to create a filter design?

Started by Ah_Nee in Matlab DSP17 years ago

Hi all. I am new here and i am just a undergraduate student. I am now having my final year project which is "Wireless Speech ...

Hi all. I am new here and i am just a undergraduate student. I am now having my final year project which is "Wireless Speech Recogntion Entry System" Now i wish to design a filter that will get data straight from microphone in real-time, and then wil


Gaussian filter

Started by enriquefergosa in Matlab DSP18 years ago

Hallo. I am trying to do a gaussian filter using the matlab function H = FSPECIAL('gaussian',HSIZE,SIGMA). I need to do that the ...

Hallo. I am trying to do a gaussian filter using the matlab function H = FSPECIAL('gaussian',HSIZE,SIGMA). I need to do that the height of the gaussian is one (that is that the gaussian goes from zero to one)while the parameter SIGMA is varied to change the wide of the base. How cou


2D Filter design

Started by Appalayagari Sreedhar in Matlab DSP19 years ago

Hi everyone, I am working on the 2D filter design. I can plot the figure using the command freqz2 but i need to calculate...

Hi everyone, I am working on the 2D filter design. I can plot the figure using the command freqz2 but i need to calculate the stopband attenuation, which is very imortant for my design. can anyone please tell me how to calculate the stoband attenuation in db valu


MATLAB code required on filter banks

Started by Sanjay S in Matlab DSP17 years ago

Can anyone please send me the MATLAB code for a 25 or 27 or 32 band filter banks with bandwidth according to the human perceptual...

Can anyone please send me the MATLAB code for a 25 or 27 or 32 band filter banks with bandwidth according to the human perceptual model of 25 bands of auditory spectra. Awaiting your response as soon as possible. Regards, SANJAY


Comparaison of 2 audio signals and calculation of filter

Started by "romain.fiasson" in Matlab DSP12 years ago

Hi everyone, For a linguistics experiment, I have loudspeakers playing sounds in a room and they are directed towards a wall, which acts as a...

Hi everyone, For a linguistics experiment, I have loudspeakers playing sounds in a room and they are directed towards a wall, which acts as a low pass filter when you hear the sounds in the neighbouring room (where I am making recordings with my experimental subjects). The goal is to see the influence of ambient sounds on speech. It would be very nice if i could actually know more about the ...


IIR filter design

Started by megha daga in Matlab DSP16 years ago 1 reply

Hi everyone I am new to matlab and I am working on designing of a cascaded IIR filter (biquads with 5 coeff each) design. My sampling rate is...

Hi everyone I am new to matlab and I am working on designing of a cascaded IIR filter (biquads with 5 coeff each) design. My sampling rate is 48KHz, cut off is 6KHz. I am currently using fdatool. But I am not sure about its stability. I also tried using the commands butter and then tf2sos. Some one kindly suggest how stable these filters can be? Which is a better method. Kindly provide your sug...


Re: band pass filter

Started by burak tiryaki in Matlab DSP15 years ago

I've attached the code On 11/18/06, burak tiryaki wrote: > > Hi All, > can any body help me,I've found code for voice recording, but...

I've attached the code On 11/18/06, burak tiryaki wrote: > > Hi All, > can any body help me,I've found code for voice recording, but I want to > add band pass filter (300Hz-3400Hz ) can any body tell me how to do this??