6th order bessel filter

Started by tameze sylvianne in Matlab DSP17 years ago 2 replies

Hello, I'm a beginner in Matlab. I would like to program a 6th order bessel Low pass filter using matlab. My specifications...

Hello, I'm a beginner in Matlab. I would like to program a 6th order bessel Low pass filter using matlab. My specifications are as follow : Cutott frequency 8.2MHz and my sampling rate is 52.32 MHz (for DVD purposes). My Code is the following clear all


cicdecimate filter

Started by egan_nc in Matlab DSP17 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 2rd order delta sigma modulator. According to the example on matlab, I should set up the file as follow. M = 1; %


MATLAB code required on filter banks

Started by Sanjay S in Matlab DSP15 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


adaptatif filter lms

Started by abir hadrich in Matlab DSP12 years ago 1 reply

hello, im new to the topic of adaptive filters and its implementation in matlab. im doing a project on 'filtering an ECG foetus'. we are...

hello, im new to the topic of adaptive filters and its implementation in matlab. im doing a project on 'filtering an ECG foetus'. we are carrying out all our analysis on an ECG wave with only a powerline interference (60hz). the signal available to us is an ECG wave with a noise component of 60hz, sampled at 360hz.. can you help me implement an adaptive filter using LMS algorithm for this s...


Smoothing Filter

Started by Craig Doolittle in Matlab DSP18 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


Specifications of Band pass filter

Started by arur...@yahoo.co.in in Matlab DSP14 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.


2D Filter design

Started by Appalayagari Sreedhar in Matlab DSP18 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


Comparaison of 2 audio signals and calculation of filter

Started by "romain.fiasson" in Matlab DSP11 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 ...


6th order bessel filter

Started by Sylvianne Tameze in Matlab DSP17 years ago

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 &


Variable cut-off frequency LPF with high oversampling

Started by whee...@yahoo.com in Matlab DSP6 years ago

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...


Simon Haykin's Adaptive Filter Theory 4/e

Started by kmbell72 in Matlab DSP18 years ago 5 replies

Hello, 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


FIR Positive Coeff.

Started by Ahmed Shahein in Matlab DSP14 years ago

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...


lms notch adaptive filter

Started by el01...@mail.ntua.gr in Matlab DSP12 years ago

hello, > > im new to the topic of adaptive filters and its implementation in matlab. im doing a project on 'filtering an ECG foetus'. we...

hello, > > im new to the topic of adaptive filters and its implementation in matlab. im doing a project on 'filtering an ECG foetus'. we are carrying out all our analysis on an ECG wave with only a powerline interference (60hz). > > the signal available to us is an ECG wave with a noise component of 60hz, sampled at 360hz.. > can you help me implement an adaptive filter using LMS algorithm f


How to make a impulse response using "filter" function

Started by cesar acosta in Matlab DSP12 years ago

hi, im little new using matlab and these is my first post ^^ I have use the function impz to do it and i need to compare with the response...

hi, im little new using matlab and these is my first post ^^ I have use the function impz to do it and i need to compare with the response using filter, but im no relly sure how to do it. with impz N = 40; num = [0.9 -0.45 0.35 0.002]; den = [1 0.71 -0.46 -0.62]; y = impz(num,den,N); what i tryed N = 0:40; num = [0.9 -0.45 0.35 0.002]; den = [1 0.71 -0.46 -0.62]; y = filt...


raised cosine filter help

Started by asim...@yahoo.com in Matlab DSP14 years ago

i want to design a raised cosine filter in passband..i-e after modulation with the carrier of 10 MHz sin wave...here is my code .......... f_c...

i want to design a raised cosine filter in passband..i-e after modulation with the carrier of 10 MHz sin wave...here is my code .......... f_c = 4; % Carrier frequency j=1 for k=1:600 %length(sig), for t=0:1/(20*f_c):1, r(j)=spdata(k)*cos(2*pi*f_c*t); % BPSK (spdata is +1 or -1) j=j+1; end end over = 160; % oversampling factor pulse = rcosine(80,over,'normal'


Pulse Shaping Filter for EDGE

Started by Nitin Nangare in Matlab DSP18 years ago 1 reply

Hello 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


Re: band pass filter

Started by burak tiryaki in Matlab DSP14 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??


filtering data

Started by brandon_etheridge in Matlab DSP18 years ago

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


calculating Eb/No in simulink

Started by steven leo in Matlab DSP12 years ago

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...


How to make a filter with a frequency response of 1/(a^2+w^2)?

Started by kavo...@gmail.com in Matlab DSP14 years ago 7 replies

Hi everybody, First I like to appologize because my question is some how stupid, since I am mechanical engineer student and new in signal...

Hi everybody, First I like to appologize because my question is some how stupid, since I am mechanical engineer student and new in signal processing, I need to generate a random signal with a desired PSD, I found that this problem was asked before by Tony and Nandan gave him the answer. What Nandan said was to generate a white signal (uniform PSD) and then pass it through a filter whose f