Transformation from analog Lowpass filter to Bandpass filter is obtained by following steps 1 - desing low pass filter having specifications of...

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 transfer function of lowpass filter 3 - subsitute s' = [(s^2+wo^2)/s] into Lowpass Tansfer fn to obtain banspass Transfer fn. but how can we transform a BP filter to Lowpass filter in analog domain..... if anyone ha...

Hi, I want to design a decimation filter for a Sigma-Delta modulator. The modulator input is 20Khz sinus signal. And this signal is oversampled...

Hi, I want to design a decimation filter for a Sigma-Delta modulator. The modulator input is 20Khz sinus signal. And this signal is oversampled to 2.5Mhz. So decimation ratio is about 64. First I designed a CIC filter which has a decimation ratio of 16. After a halfband filter and an FIR filter. So halfband filter output is 80 Khz, FIR filter output is 40 khz. Anyway, I want to design halfband ...

Hello to all, My problem is the following: I have a signal x that was sampled with Fs = 8000 Hz and sampled 1000 samples. I want to...

Hello to all, My problem is the following: I have a signal x that was sampled with Fs = 8000 Hz and sampled 1000 samples. I want to filter the signal using a truncated version of an ideal discrete lowpass filter getting the filter coefficients b with the sinc function: k = -100:1:100 ; b = (1/Wc) sinc (Wc * k) ; I want to filter frequencies higher than 2500 Hz, I must somehow re...

Hello everyone!! Im struggling on a simple assignment. I have to filter specific data (which are in .xls format) using the "optimal" kalman...

Hello everyone!! Im struggling on a simple assignment. I have to filter specific data (which are in .xls format) using the "optimal" kalman filter in both ARMAX and ARX models. the struggle is on how to connect the data from the xls file to the filter... here i give u my kalman filter with the comments --------------------------------------------------------------------- % s = kalm...

I designed a CIC decimation filter, and am trying to plot its frequency response. Given below are the specifications of the filter. Sampling...

I designed a CIC decimation filter, and am trying to plot its frequency response. Given below are the specifications of the filter. Sampling Freq fclk: 1.4MHz Decimation D: 100 Input bits: 3 Output bits: 24 Order: 3 Question: What is the proper way to plot the magnitude the freq response of the filter? I did the following: If I send in 102400 samples into the filter, I get 1...

Hello all, In the book of "understanding of digital signal processing", it is said that cic filter has a inherent problem which is cic filter...

Hello all, In the book of "understanding of digital signal processing", it is said that cic filter has a inherent problem which is cic filter can not remove the outband imgage clearly and the image will be folded into the real signal when decimation especially when stage of cic filter is very small. But there is an integrater ahead of decimation. Is the integrater a good low pass filter enoug...

I need to design a low pass filter with cut-off frequency 150Hz.since my algorithm involves finding the difference between the energy of...

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 through the filter ,I need the filter to have very high efficiency. I found ellip - 4th order to have good performance.But i need a better one. Could anyone suggest me a better filter type. waiting for reply T...

Hi I'm busy designing a decimation filter which takes 8 bits from a excessively oversampled ADC and decimates the signal. I need a...

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. For example 8 bits into the filter but I need 13 bits out. If anyone could tell me how to make design that filter in matlab it would be of great help. Thank you.

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. ...

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 filter (1) design an equiripple half-band filter using the Remez exchange (2) make the filter frequency response positive-definite (3) spectral factorization This i

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,...

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 C. Here, i am facing a problem in implementation filter. basically i am not able to convert the "filtfilt" function in C. bcos of "filter" function that is used in "filtfilt'. In matlab filter

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 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 fdatool; but where does the desined filter is saved i do not know,, and how to use any filter on any input sequence i do not know. please help me in this thing

Hi, Trying to use the M-file "filter" to filter out a high-freq signal from a composite signal. num,den gives the co-efficients...

Hi, Trying to use the M-file "filter" to filter out a high-freq signal from a composite signal. num,den gives the co-efficients of a Low-Pass filter with cut-off freq near 0.25*pi The filter works fine when the step_size variable is greater than 0.8 The

Hi guys Can anyone help me in design filter using Matlab with following specification Design an approximation to ideal Low pass...

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 input to the filter has energy in the range 0 250 HZ The filter is to have a linear Phase The filter is to have

Hallo, I need help. I would like to do a 2D circular high pass filter using the matlab function FSPECIAL('DISK', RADIUS) but, this ...

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 really. How could I change from low to high pass filter using this function?. I tried to do this filter doing my ow

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...

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 this filter to 0 dB? Do I minus 1000 from each of the coefficients of the filter, Hz? One of the paper I read uses a po

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...

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 delay of 5 sample or 25ms.this filter provides an attenuation greater than 25dB at 60Hz,and effectively suppresses power-line interference,if present. i make this filter in MATLAB with command:

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...

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...(the steps involved in filtering the data x using the filter coefficients a and b)..since its an inbuilt function

Hi Mob, When you look to design a filter, ideally you would want a brick wall type of filter. But then to design a filter with...

Hi Mob, When you look to design a filter, ideally you would want a brick wall type of filter. But then to design a filter with such a characteristic is physically not possible. So you try and design a filter whose curve would fit within the desired characteristics. That is you allow

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...

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 HUGE.. Mandar --- Glen Ragan <> wrote: > Yes, the filter() function will do filtering. Sinc

hi.can anyone tell me which command can i use to convert an IIR filter into 2D filter.i searched alot but couldn't find anything.please help me...

hi.can anyone tell me which command can i use to convert an IIR filter into 2D filter.i searched alot but couldn't find anything.please help me out