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# Iir Filter

235 Threads found on edaboard.com: Iir Filter

## simulating a IIR filter butterworth method in matlab

Hello! Can someone point me to some detailed matlab tutorials that can help me with my assignment? Or a few explanations would be much appreciated. iir filter Butterworth method Fpas s=9kHz, Fstop=11kHz, Apass=1dB, Astop=25dB and Fs=40kHz iir filter analog prototype H(s)= 0.0979/(1*s^5+2.0333*s^4+2.0671*s^3+1.2988*s^2+0.

## VHDL 1 D Kalman Filter

The given filter is a simple first order digital iir low-pass. For certain problems, it might be a useful Kalman filter. (Kalman filter isn't a specific filter type rather than a filter goal specification). Digital filters are mostly implemented using fixed point instead (...)

## UWB antenna as filter

Hi, I am interested about planar UWB antennas like vivaldi or patch antenna. These UWB antenna should be considered as what type of filter (eg FIR or iir) ? After simulating in HFSS, if I save |S11 | dB 2D plot in .csv format, how may I get frequency response H(jomega) from S11.csv file in MATLAB?

## fir filter difference in 8-bit and 12-bit modes

Rounding and precision issues can be very significant in digital signal processing. For example I inherited an iir filter in a control application and eventually realized how poorly configured it was for the task. Small signals (and as an error amplifier that's all it should see) multiplied by small coefficients rounded to zero, essentially negat

## Desgining butterworth filter of Nth order

Butterworth is an iir filter, the PT1 response to a step should be an exponential function. In case you are intending an FIR butterworth approximation you should mention this.

## 90 Degrees Shift of Digital Signal

Not really my area, but a hilbert transform on a periodically sampled signal should help getting a 90 degree component. But if I was going after real and reactive power, I would: Real power- Multiply samples of V and I taken as close as possible to the same sample time, then put the result through an iir low pass filter. Reactive Power- Find the

## Noise cancellation using IIR LMS and Unscented Kalman for speech enhancement

Hiho, I am doing research using matlab- R(2011a) for noise cancellation using iir LMS and unscented kalman filter. But I don't know how to create the code using matlab for iir LMS. And for UKF, i dont know what is the equation of non linear state equation representing speech. Please could some experts can help me to solve my problems. (...)

Hi everyone! I wanted to design some digital filters for an ECG device based on Zynq SoC. Since The device works with 24bits of data, I can't use the FIR block present in System generator. So I designed a low-pass 65th order FIR filter with 250Hz cutoff frequency, and a 2nd order band-stop iir filter with 50Hz center (...)

## Audio detector that ignores 50Hz mains hum using arduino/attiny

I guess you could do that by an iir bandpass filter, taking the average amplitude, and then passing this signal through a kind of integrator which would act as an rectifier.

## Practical Application of FIR

Dear all, I am new to this field. I wanted to know some very common application of FIR and iir filters that used very often. Thank you

hi i had written a code in matlab for a iir filter with following specs wp= and sampling frequency 16600 but i need to deside the other specs i.e. stopband freqyencies and ripple and attenuations but the filter characteristics are not producing due to high sampling frequencies. the sampling frequency must be high because this is a ba

## designing a filter bank

i read in a ieee paper that FFT are use to design a filter bank instead of FIR and iir filters but i am not understanding how it happens they said that FFT is used to increase the channels if necessary with same FFT can u please help me in this topic

## Digital iir filter stability checking.

Hi all, I am trying to confirm the stability of some digital iir filters I am using. I have downloaded a trial of Matlab 2014b and have been attempting to use the isstable function to check stability, this tells me that my high frequency notch and bandpass filters are stable but my mains (50Hz) noise notch filter and (...)

## urgent need for source code of iir filter design using genetic algorithm

hi friends i am just started my project on iir filter design using genetic algorithm plz help me write source code plz plz thanks in advance

## what does the order of a Filter (FIR or IIR) signifies

what does the order of a filter (FIR or iir) signifies How to determine the order of filter

## testing a iir filter in matlab

hi i am doing a project on filter design i am stuck while testing the filter. i want to know how to test a filer in matlab coding my code is clc; clear all; in=; wp=420; ws=490; rp=3; rs=80; fs=1000; w1=2*wp/fs;w2=2*ws/fs; =cheb1ord(w1,w2,rp,rs) = cheby1(n,rp,wn) =freqz(

## Low Pass Filter Using FIR compiler

Sampling frequency should be as low as possible to allow handy filter order, but must at least fulfill the Nyquist criterion for the input signal. You can play around with the matlab filter tool to get a feeling of meaningful filter parameters. I find iir filters more effective for my range of applications.

## FIR filter in Matlab for bandpass 250kHz - 700kHz and sampling frequency 250MSPS

You give the explanation in the question title. The minimal FIR filter order is related to the fs/fc ratio. With this sampling frequency, you can't make even a poor FIR filter with less than e.g. 500 or 1000 taps. Possible solutions: - design a multirate filter with decimation before the final filter - design an (...)

## emphasis/de-emphasis filter design 6 db/octave

I am looking for implementation for emphasis filter +6db/octave and -6db/octave in dsp processor. I remember that some years ago I saw it in source codes from TI. As I remember it was simple low order iir filter. But now I can't find that source code. Thanks in advance.