Forums Search for: Filter
ARMA
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
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
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
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
inHi 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
inDear 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
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
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
inhi 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
inHello, 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
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
inHello 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
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?
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
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
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
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
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
inHi 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
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??