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Technical discussion about Matlab and issues related to Digital Signal Processing.
Search Results for "filter"
how to transform from analog Bandpass filter ----->equivalent Lowpass filter
taisahmad - Nov 7 2006
Transformation from analog Lowpass filter to Bandpass filter is
obtained by following steps
1 - desing low pass filter having specifications of bandpass filter
2 - obtain trans... 
digital filters
Sergio Dominguez - Aug 27 2004
Hi all,
I have written a digital filter (quite simple and generic) as
a*s^2+b*s+c
___________
d*s^2+e*s+f
The filter discretized using Tusting. The c... filter applicaion [2 Articles]
Harsh Pradhan - Dec 15 2005
i am trying to apply a filter to a image matrix x ,,
x=imread('image.bmp);please can u tell me how to
apply digital filer to the matrix x,
i can design filter using fdatoo... Matched Filter [3 Articles]
xoticsmile - Dec 25 2004
Hey Guys,
how are you all doing?
i have a project to do and im not sure if im doing it right ..
the professor gave us a file to filter by doing a matched filt... NEED TO DESIGN A LOW P ASS FILTER [2 Articles]
itsmedevi_86 - Nov 28 2007
I need to design a low pass filter with cut-off frequency 150Hz.since
my algorithm involves finding the difference between the energy of the
signal before and after passing t... gain scaling of comb filter
egan_nc - Jul 29 2003
Hi everyone,
I have a 3rd order CIC comb filter with decimation ratio of 16. The
freq response of the filter shows a gain of 60 dB. How do I scale
the gain of thi... FIR filter design [2 Articles]
"marinus.yates" - Sep 13 2007
Hi
I'm busy designing a decimation filter which takes 8 bits from a
excessively oversampled ADC and decimates the signal. I need a FIR
filter to have an increased resolution... Filtering 3d Data
simon connol - Aug 12 2003
Hi guys !!
First of all, I'd like to say that this group is really excellent, atleast we
people who have questions regarding Matlab can communicate with Other pe... Unknown Filter Type [2 Articles]
larkjon - Jan 13 2005
Hi,
I may have inadvertly posted this twice. If so, I apologize.
I've "inherited" the following filter:
Yn = Yn-1 + C(Xn-Xn-1)^2 - C(Xn-Xn-1)(Yn-1)... block processing, filter behaviour
competitions_2005 - Oct 28 2005
Hello
I have a question about filter behaviour and block processing.
I have a signal x[k]=s[k]+n[k] where s is clean speech and n is
colored, gaussian noise.
In... circular high pass filter
enriquefergosa - Jul 7 2003
Hallo, I need help. I would like to do a 2D circular high pass
filter using the matlab function FSPECIAL('DISK', RADIUS) but, this
function is a low pass filter re... filter
reshma_jacob - Feb 4 2004
hii all...
i am trying to write C++ code for the filter function in matlab.
(y=filter(b,a,x))..can any one tell me wat the filter function in
matlab actually does... Re: RE: filter function in matlab for awgn
Mandar Rahurkar - Feb 27 2004
However in the problem specified the filter command is as good as
filter you use. There is NO way to filter all the AWGN..if you can
find a way to do that would be ... question for filter implementation
nasim ahmed - Jan 10 2006
hi guys, This is nasim, i am working as a DSP engg. in chennai ( india ). My work is to convert many matlab functions in C. just like linkage, cluster and to implement filter in... Fillter design
nazia - Apr 19 2003
Hi guys
Can anyone help me in design filter using Matlab with following
specification
Design an approximation to ideal Low pass filter of bandwith = 100 Hz
The ... change a dsp filter for varios sampling frequency [2 Articles]
emilly - Aug 30 2005
Dear all
i have a digital filter H(Z)=1/32*(1-z^-6)^2 /(1-z^-1)^2
with sampling rate being 200Hz, the filter has a rather loe cutoff frequency of fc=11 Hz and introduces a d... filter and downsample [3 Articles]
egan_nc - Jun 30 2003
Hi,
I designed a filter using remezord function. When I filtered the
input first and downsampled later, the filter works fine.
out2a=filter(h1,1,out1a);
out2b=d... quantization after multiplication
#ARIJIT BISWAS# - Nov 27 2003
Dear List:
I have a doubt in filter implementation!
I wish to include the effect of quantization after multiplication with the
filter coefficien... RE: filter function in matlab for awgn
Glen Ragan - Feb 27 2004
Yes, the filter() function will do filtering. Since you seem to be
doing signal detection, you would also be interested in convolution,
conv(), with the time-revers... strange result for filter design [5 Articles]
Moshe Malkin - Jan 6 2003
Hello,
The following code fails completely.
Instead of producing the requested filter
it returns the filter coefficients as all zeros.
Here's the code:... Problem in Bandpass filter, passband reappear after half sampling frequency [4 Articles]
Henry Chang - Sep 18 2002
Hi all,
I am beginner in digital filter design. Currently, I am designing a
bandpass filter cut-off at 500hz and 1.8khz, with sampling frequency
6k Hz. I use b... Filter design using Remez Exchange Algorithm
himab_g - Jan 20 2006
Hi
I am new to filter design. I have to design Smith-Barnwell Filters
for lengths N= 4,8,16,31,64.. using Remez Exchange Algorithm.
These are the steps to design the filt... filter function
cherrymata - Feb 24 2004
Hi All,
is there any filter function in matlab that can filter the signal
disturbed by awgn (additive white gaussian noise) ?
can anyone help me...
thx ve... Implementation of Linear phase IIR filter [7 Articles]
sham ganth - Sep 26 2003
Sir,
Iam trying to implement Linear phase IIR filter. My problem is that i
want to reset the state variable of the Elliptic lowpass filter i
want your suggestions... Help using butterworth filters [2 Articles]
cool...@hotmail.com - Nov 2 2005
Hello, I'm currently taking an Electrical Engineering class but I'm a Mathematics Graduate student so I'm missing some of the screws that put this whole shebang together so I'm ... Filter Design(Complex Bandpass Filter)
adnan kiani - Jan 10 2008
Hello;
I need some help regarding complex bandpass filter design. The task is to design a complex BPF with passband at 8-12MHz and stopbands at -16-7MHz and 13-16MHz. The idea is ... how to resample a z transformation??? [6 Articles]
stefanosorrentino - Nov 28 2002
Hello friends.
I have an apparently unsolvable problem:
I have a given IIR filter (they give me the poles and the zeros).
The filter was originally sampled at a g... frequency sampling filter design code [2 Articles]
Appalayagari Sreedhar - Oct 10 2002
Hi,
I am sreedhar.
i am some problem with designing the frequency sampling fir filter,
i need a frequency sampling filter design matlab code, actually i ... problem in normalization factor in low pass filter implementation [4 Articles]
i_am_henry - Jul 14 2002
Dear all,
Currently, I am working on implementing recursive low pass filter
with design equation extracted from manual
y(n) = 2*y(n-1) - y(n-2) + x(n) - 2*x(n-... Filtering Guassian noise with Matlab [6 Articles]
tu5752 - Dec 3 2005
Hello all,
I'm generating a 1 kHz square wave and adding Guassian noise to obtain
a SNR of 0 dB (using Matlab6.5). The task is to design a filter that
will filter out as... Volterra filter design
mmni...@yahoo.com - Feb 9 2007
How can I design a 2nd order Volterra filter with any "input + noise". Output should be noise free. If anyone can give me an example? Also how can I represent above filter in sta... analog filter order for cheby1 [2 Articles]
mao mu - Nov 11 2003
Hi
My target filter is a bandpass analog filter. With N=7, cheby1 returns a 14th
B(s), A(s).
But if the target is a LPF or HPF, the results are 7th order B(s),A(s... IIR to FIR with window convertion
haak...@hotmail.com - May 26 2006
Hi all.
I have a question about a issue here.
I want to convert a non-linear IIR filter to a linear FIR filter as well as=
applying a window to it.
It seems like I'm doing... Low-pass filter design
Hugo de Paula - Feb 28 2003
Hi everybody,
Low-pass filter design is considered trivial and Matlab makes it even
easier, but I would like some advice in this situation.
I would like a l... Designing a Notch Filter [3 Articles]
maha devi - Feb 12 2008
Hi friends,
I need to design a notch filter using matlab..
can anyone tell me if any inbuilt command is available for designing a notch
filter in matlab.how can i specify the ... filter [2 Articles]
brandon_etheridge - Nov 20 2002
I am trying to filter a column of values to obtain a smooth curve.
What is the best method in Matlab to filter these data points. I
seem to run into a problem becau... Doubt in implementation of linear phase iir filter
sham ganth - Sep 15 2003
Sir,
Iam trying to implement Linear phase IIR filter in Matlab. Iam a
Post Graduation Student from South india. I need your help. My basic
refrence is "A techniqu... workspace coefficients in Simulink [2 Articles]
Nalin Pithwa - Feb 28 2003
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 i... adaptatif filter lms [2 Articles]
abir hadrich - Feb 20 2008
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 ... Paynter Filter Pole Locations
larkjon - Mar 15 2005
I'm interested in equations for the pole locations of the Paynter
filter. The publication "The Lightning Empericist" has the equations
for the even order Pa...