## FIR filter implementation

Started by in Matlab DSP10 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

## Gabor filter

Started by in Matlab DSP17 years ago

Hi everyone, I am trying to implement a gabor filter to a 1D signal. Are there any built in functions or toolboxes available. ...

Hi everyone, I am trying to implement a gabor filter to a 1D signal. Are there any built in functions or toolboxes available. thank you in advance,

## Filter Design Package

Started by in Matlab DSP20 years ago 2 replies

Hello everybody. Can any one let me know about good Digital Filter Design Packages available and its cost? How do they compare...

Hello everybody. Can any one let me know about good Digital Filter Design Packages available and its cost? How do they compare with others? Thanks arun

## IIR filter

Started by in Matlab DSP18 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?

## quantization after multiplication

Started by in Matlab DSP17 years ago

Dear List: I have a doubt in filter implementation! I wish to include the effect of quantization after...

Dear List: I have a doubt in filter implementation! I wish to include the effect of quantization after multiplication with the filter coefficients. Eg. I need, y[n] = Q(x[n] b0) + Q(x[n -1] b1) -Q(y[n -1] a1) ; where Q(.)

## image filter

Started by in Matlab DSP16 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;

## implementation of filters?

Started by in Matlab DSP18 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

## FIlter Design

Started by in Matlab DSP17 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.

## kalman filter

Started by in Matlab DSP14 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...

## Noise Cancellation using Auto and Cross-Correlation (xcorr & xcorr2)

Started by in Matlab DSP12 years ago 1 reply

Hello, I'm trying to create an FIR filter to cancel some noise in an audio sample by looking back at the previous samples (some m samples back)...

Hello, I'm trying to create an FIR filter to cancel some noise in an audio sample by looking back at the previous samples (some m samples back) to create the filter weight for the current sample and then incrementing (similar to a queue where a new sample enters). I am using the auto and cross-correlation between the noise and the noisy signal to find the filter coefficients and not having ...

## Few basic Problems in simulating UWB

Started by in Matlab DSP17 years ago

Dear all,   First What I wanna do is generate a S(x) 16 M-ary symbol use PPM. Then push S(x) through a filter which is...

Dear all,   First What I wanna do is generate a S(x) 16 M-ary symbol use PPM. Then push S(x) through a filter which is the impulse response. and then add gaussin noise after transmitted. at the receiver side, through the filter again and get the received symbol to fin

## Any hint as per how to filter out awgn?

Started by in Matlab DSP11 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...

## eigen filters

Started by in Matlab DSP17 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 in Matlab DSP16 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 __________________________________

## comb filter and distortion

Started by in Matlab DSP17 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:

## filter design to generate pink noise from white noise

Started by in Matlab DSP16 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-

## Re: determining filter coefficients

Started by in Matlab DSP20 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 in Matlab DSP16 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

## Re: Re: determining filter coefficients

Started by in Matlab DSP20 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

## ARMA

Started by in Matlab DSP19 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