## Forums Search for: Filter

## Pulse Shaping Filter for EDGE

inHello I am looking for the "Pulse Shaping Filter" implemetation in matlab for the EDGE (Enhanced Datarate For GSM) standard. ...

Hello I am looking for the "Pulse Shaping Filter" implemetation in matlab for the EDGE (Enhanced Datarate For GSM) standard. Can anybody help me in this matter. Thanks in Advance. Nitin

## Help on vectorization. IIR filter

Hello everybody, I'm trying to vectorize my code to avoid using for-loop operator. [code] for k=2:N x(:,k) = x(:,k-1) + gain(:,k) .*...

Hello everybody, I'm trying to vectorize my code to avoid using for-loop operator. [code] for k=2:N x(:,k) = x(:,k-1) + gain(:,k) .* (y(:,k) - x(:,k-1)); end; [/code] as far as i understand - this kind of recurrent relation is very common in DSP and corresponds to one-pole IIR filter. If 'gain' is a constant scalar value then I can rewrite it using standard built-in matlab functio...

## Simon Haykin's Adaptive Filter Theory 4/e

inHello, I recently purchased the aformentioned book, hoping to find adaptive filter examples implemented in Matlab. However, it...

Hello, I recently purchased the aformentioned book, hoping to find adaptive filter examples implemented in Matlab. However, it contains none. Supposedly, the third edition has some examples, but so far I haven't been able to find it in a local bookstore or library -- as the fo

## separating passband zeros and stopband zeros

inHi, I am working on the filter design, i am designing the FIR filter, i want to know exactly which zeros corresponds to...

Hi, I am working on the filter design, i am designing the FIR filter, i want to know exactly which zeros corresponds to passband and which zeros to stopband. how to get them i can get the zeros all by using the command tf2zp

## filtering data

i am attempting to take an excel data file of acceleration values that are plotted over time and filter the data to obtain a curve. ...

i am attempting to take an excel data file of acceleration values that are plotted over time and filter the data to obtain a curve. how do you enter the excel file into matlab and then filter the data using fft. brandon

## cicdecimate 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 2rd order delta sigma modulator. According to the example on matlab, I should set up the file as follow. M = 1; %

## [Fwd: Re: Nonlinear fir filter design]

Appalayagari Sreedhar- Yes I agree that for audio applications you would want to stay with linear phase FIR filters, when...

Appalayagari Sreedhar- Yes I agree that for audio applications you would want to stay with linear phase FIR filters, when possible given real-time processing and memory constraints.. I'm not sure of a good reference for FIR filter design using genetic methods. I'v

## Variable cut-off frequency LPF with high oversampling

Hello all, I'm using a Xilinx Kintex-7 FPGA to do some low-pass filtering using System Generator/Simulink, and had a question about the...

Hello all, I'm using a Xilinx Kintex-7 FPGA to do some low-pass filtering using System Generator/Simulink, and had a question about the architecture of the filter. My requirements include having to use a fixed sampling rate of 80MSPS. This can't really change. I appreciate the difference b/w sample rate of the filter and the clock rate of the DSP primitives in the FPGA. The customer wants...

## calculating Eb/No in simulink

Hi, I'm trying to model a partial band jammer in simulink. For that i have used a Band stop filter (IIR elliptic), as a channel to attenuate...

Hi, I'm trying to model a partial band jammer in simulink. For that i have used a Band stop filter (IIR elliptic), as a channel to attenuate the signal for the frequency band being jammed. Now i'm trying to plot the BER vs Eb/No curve using BERTOOL, but i'm facing a problem regarding the calculation of Eb/No. Basically i wud like to calculate the Eb/No of a band stop filter (being used...

## LP filter..

hi colleagues... i have generated a random signal in matlab with normal distribution (my code is written below). my signal is high...

hi colleagues... i have generated a random signal in matlab with normal distribution (my code is written below). my signal is high frequency and i want to filter it to have lower frequencies at about 1/300

## Filtering PWM in MATLAB

Hello all. I am relativele new to using MATLAB for DSP related work, and I am looking for some direction/help. I am attempting to model a PWM...

Hello all. I am relativele new to using MATLAB for DSP related work, and I am looking for some direction/help. I am attempting to model a PWM signal, and how the output would look after passing through a filter. I can creat the PWM signal with out a problem. My problem comes when I see the effect a low pass filter would have(just an example). What I am currently doing is I find the FFT, and t...

## CIC Compensator: Implementation with farrow structure

Dear all, I am using filter design toolbox to generate filter design object for CIC compensator with following parameters: MultirateType:...

Dear all, I am using filter design toolbox to generate filter design object for CIC compensator with following parameters: MultirateType: 'Rational Sample Rate Converter' Response: 'CIC Compensator' InterpolationFactor: 2031 DecimationFactor: 1250 Specification: 'Fp,Fst,Ap,Ast' ...

## need help bandpass filter in simulink

Hi,I have a couple of questions see if anyone can help: There are about the simpowersystems of simulink. 1. I couldn't find the...

Hi,I have a couple of questions see if anyone can help: There are about the simpowersystems of simulink. 1. I couldn't find the block reference for "discrete 2nd-order variable-tuned fliter(BANDPASS FILTER)". in this block, there are two input-ports, F and in? what

## Inverse Filter

Hi there, I am measuring the output of a mechanical manipulator in response to band limited gaussian white noise. This then allows me to calculate...

Hi there, I am measuring the output of a mechanical manipulator in response to band limited gaussian white noise. This then allows me to calculate the transfer function using - cross-power spectral density of the stimulus and the response divided by the auto-PSD of the stimulus. I have been able to achieve this in matlab. Now, I want to nullify the effect of the manipulator using a inverse filter ...

## Very long filters and responses

Hello, I am kind of new to DSP, however part of my bachelor's thesis is about crosstalk cancellation as it pertains to binaural audio. The...

Hello, I am kind of new to DSP, however part of my bachelor's thesis is about crosstalk cancellation as it pertains to binaural audio. The problem I'm having is with designing filters. Part of my assignment is to approximate the inverse of a filter. This filter is 40000 samples long, since it is a combination of several room impulse responses sampled at 44khz. My question is this: How do y...

## Re: Colored Noise in Matlab

Can anybody elaborate on this.if h(t) is the impulse response of the filter I have to send white Gaussian noise to it,in continuous domain .In...

Can anybody elaborate on this.if h(t) is the impulse response of the filter I have to send white Gaussian noise to it,in continuous domain .In matlab simulation I have to generate a vector of Gaussian random variables using randn and convolve it with the discrete filter coefficents and use each element of the output vector as one time instant value.Is it correct Thank You Rakesh > > >

## How does Matlab implement the [y z] = filter(b,a,X,zi) function?

Hi... I am trying to convert a Matlab script to C++ involving the filter.m function. It is said in the Matlab doc that this function is...

Hi... I am trying to convert a Matlab script to C++ involving the filter.m function. It is said in the Matlab doc that this function is implemented using the Direct Form II transposed structure, but when I implement this directly as it is, it gives results which are not as close as usual with the Matlab output, that is several magnitudes of order difference compared to machine precision...

## Re: determining filter coefficients

Dear Sana: Taka look at "butter" and "buttord" functions. They will calculate the coefficientes for a "butterworth" filter....

Dear Sana: Taka look at "butter" and "buttord" functions. They will calculate the coefficientes for a "butterworth" filter. There are similar functions for "chebyshev" and "elliptic" filters. OK? Regards, P.David

## FIR Positive Coeff.

Hallo Everybody, I'd like to ask about FIR filter coefficients, I am using "firceqrip" command. I get all the coeff. in positive value,...

Hallo Everybody, I'd like to ask about FIR filter coefficients, I am using "firceqrip" command. I get all the coeff. in positive value, i.e., the impulse response is only positive values. I'd like to knoe if it is practically to implement such a filter? What is the difference between to have all the coeff. positive or to have it mix between positive and negative. Thanks in a...

## 6th order bessel filter

Hi all, i forgot to specify that my 6th order bessel low pass filter is a digital one. I read from the help files that the...

Hi all, i forgot to specify that my 6th order bessel low pass filter is a digital one. I read from the help files that the function besself does not support the design of digital filters,just analog. My specifications are as follow : Cutott frequency &