Spectral Transformation for FIR filters...

Started by lmad...@yahoo.com in Matlab DSP12 years ago

Hi All, I am attempting a spectral transformation for FIR filters. My intention is to convert Low Pass FIR filters to Multiband (Bandstop or...

Hi All, I am attempting a spectral transformation for FIR filters. My intention is to convert Low Pass FIR filters to Multiband (Bandstop or Bandpass) FIR filters. I am aware that such transforms exist for IIR filters and that there are APIs in Matlab like lp2bs and lp2bp that do this. 1. Are similar transforms possible for FIR filters ?? 2. If YES, what is the method used ?? 3. Any Mat...


How to calculate FIR filter coefficients?

Started by talh...@yahoo.com in Matlab DSP6 years ago 1 reply

hi, I am trying to implement digital FIR filter in my DSP kit. I don't know how to calculate the FIR coefficients. I know the order, sampling...

hi, I am trying to implement digital FIR filter in my DSP kit. I don't know how to calculate the FIR coefficients. I know the order, sampling frequency and my signal bandwidth. I want to design Multi band pass filter. Can anyone help me in this regard and may be e mail me the procedure. It would be very much grateful. My id is (t...@yahoo.com) Thanks.


[Fwd: Re: Nonlinear fir filter design]

Started by Jeff Brower in Matlab DSP15 years ago

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


FIR or IIR?

Started by "kian.zarrin" in Matlab DSP10 years ago 1 reply

Hallow, please help me about choosing FIR or IIR filters I have a DSP/FPGA system to process signal and I want to design a filter to filter my...

Hallow, please help me about choosing FIR or IIR filters I have a DSP/FPGA system to process signal and I want to design a filter to filter my input signal. I need to know which one is better for me, FIR filter or IIR filter. For my application I need to meet all the requirements below: 1) Low ripple 2) Linear Phase response 4) Sharpness: to block noise 5) Complexity (inherent group pha...


Simulink FIR filter problem

Started by petrov05 in Matlab DSP13 years ago

Hi! The world of DSP is new for me, and normally I have a question. Can I implement FIR filter with matlab/simulink on...

Hi! The world of DSP is new for me, and normally I have a question. Can I implement FIR filter with matlab/simulink on TS320C6416 DSP, using C64xx DSP Library? Symmetric FIR filter block is not working. Question is too simple, I know,


Discussion : FIR vs IIR filters: Add your comments

Started by utd_anurag in Matlab DSP13 years ago 4 replies

Hi, I am new to this group. I want to initiate a discussion pertaining to FIR and IIR filters. I am adding my beliefs & have a...

Hi, I am new to this group. I want to initiate a discussion pertaining to FIR and IIR filters. I am adding my beliefs & have a few questions. Please do add your comments and suggestions.. if any.. Thanks, FIR filters: 1). depen


How to inverse a FIR Filter using Matlab

Started by Lê Anh in Matlab DSP5 years ago

Hi Everybody Im new here und i have a question from my Bachelorthesis In a Matlab system ,I have the estimated transfer function from the...

Hi Everybody Im new here und i have a question from my Bachelorthesis In a Matlab system ,I have the estimated transfer function from the channel, simply ch_est (in frequency domain), and that is a 64x1 Matrix You can say that the channel is a FIR Filter with finite impulse response. I have heard that, the inversion of a FIR Filter is always a IIR Filter, with infinite impulse response...


FIR design Window method -Convolution

Started by claudiocamera in Matlab DSP12 years ago

I came across the following problem in FIR design using window and convolution techniques . Project a FIR filter using a Hamming...

I came across the following problem in FIR design using window and convolution techniques . Project a FIR filter using a Hamming window to achieve the following specifications: Passband 0,3-3,4 kHz Stopband 0-0,2 e 4-8 kHz Stopband atenuation > 25 dB Sampling frequency 32 kHz Since the transition band is different


Nonlinear fir filter design

Started by Appalayagari Sreedhar in Matlab DSP15 years ago 1 reply

Hi I want to know clearly, what exactly the non linear phase fir filters. is the minimum phase fir filters are the nonlinear...

Hi I want to know clearly, what exactly the non linear phase fir filters. is the minimum phase fir filters are the nonlinear filters. i need to design a non linear filter,please shed some light on this area. thank u all, and also does the anti


Design of FIR Equaliser

Started by supramaniamk in Matlab DSP13 years ago

Hi everyone, Is there anyone familiar in the design of FIR equaliser using some modification on the MATLAB REMEZ using...

Hi everyone, Is there anyone familiar in the design of FIR equaliser using some modification on the MATLAB REMEZ using the Park's & McCellan program Appreciate your response. Regards Supra


FIR filter implementation

Started by QQ in Matlab DSP7 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


FIlter Design

Started by CH R in Matlab DSP15 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.


question encountered during frequency response masking fir design

Started by fu_mengyao in Matlab DSP9 years ago 1 reply

hi everyone: I have all the component filter to make the overall filter, but could anyone tell me how to put them together in matlab and...

hi everyone: I have all the component filter to make the overall filter, but could anyone tell me how to put them together in matlab and plot the overall filter? I am stucked at two points:how to find a complementary filter of given fir,how to implement a adder in matlab. I am really really frastrated now,thanks to all kind reply. mengyao


help with half-band FIR filters..

Started by Vivek Venugopal in Matlab DSP14 years ago

Hi, I have a doubt with respect to half-band FIR filters... WHile specifying weights for the remez function the response looks ...

Hi, I have a doubt with respect to half-band FIR filters... WHile specifying weights for the remez function the response looks weird when we specify w=[0.5 0.5]. Is there any way to do it?? I thought of another way.. I found out the coefficients by using the remezord func


IIR to FIR with window convertion

Started by haak...@hotmail.com in Matlab DSP12 years ago

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...

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 it wrong as frequenserespons I get of my new filter= never goes to zero (or close to zero) in the stopband, as well as the band= pass does not look good either. the code: b_window =3D hanning(100); [b,a] =3D but...


FIR Filter with Multiple Zeros.

Started by Nitin Nangare in Matlab DSP17 years ago

I would be greatly obliged if some one could tell me How to Design FIR filter with Multiple Zeros using Matlab filter routine. ...

I would be greatly obliged if some one could tell me How to Design FIR filter with Multiple Zeros using Matlab filter routine. Thanks is advance for your co-operation. Regards, NitinĀ 


2-D digital filtering

Started by Appalayagari Sreedhar in Matlab DSP15 years ago

Dear all, I am working on the 2-D fir filtering, i need to calculate the passband ripple and stopband attenuation for the...

Dear all, I am working on the 2-D fir filtering, i need to calculate the passband ripple and stopband attenuation for the 2-D fir filtering case using matlab, for 1 - D i can use max(H) which will give me the passband ripple and i can calculate the s


Nonuniform SAmpling FIR

Started by Emhemmed B Limsailkhi in Matlab DSP17 years ago

>Hi .... We are developing a nonuniform frequency sampling FIR digital filter (lowpass) with linear phase using Matlab5.3 and DSP...

>Hi .... We are developing a nonuniform frequency sampling FIR digital filter (lowpass) with linear phase using Matlab5.3 and DSP toolbox (I dont remember the version of the DSP), however, We have arrived to a stuck point in the code becouse i am not very pro in Matlab. We have de


neural networks

Started by Logeshwaran Vijayan in Matlab DSP15 years ago

Hi all, I am looking for matlab code for time delay neural networks (TDNN) and FIR Multi-layer Perceptron (FIR MLP)? As far...

Hi all, I am looking for matlab code for time delay neural networks (TDNN) and FIR Multi-layer Perceptron (FIR MLP)? As far as I know, these neural nets are not available in current MATLAB neural net toolbox. I would be glad if someone can give me pointers on this


Effect of FIR LPF coefficients decimation

Started by alexzfoto in Matlab DSP11 years ago 2 replies

Hi, here is the quesiton: I have a simple linear phase FIR LPF designed by windowing using hamming window, obtained its mathematical expression...

Hi, here is the quesiton: I have a simple linear phase FIR LPF designed by windowing using hamming window, obtained its mathematical expression (lets call it h[n]). Now, decimating the sequency of the coefficients by 2, i.e. making new filter to be h'[n] = h[2n] (an new n sequence runs from 0 to original n/2, so if original LPF length is 51 (order 50), the new will run from 0 to 25)) and che...