![]() (e)Discuss which filter is better (FIR Hamming Window or IIR Butterworth) based your results. Then produce the one-sided amplitude spectrum and compare the result with part (b). ![]() (b) Produce the one-sided amplitude spectrum for signal x ( n ) : x ( n ) = 2 cos ( 2 π 1200 n T s ) + 7 cos ( 2 π 1700 n T s ) + white Gaussian noise (c) Apply the Butterworth filter to signal x ( n ). (a) Produce the magnitude response and phase response using MATLAB code. Use butter MATLAB function to design a Butterworth bandpass filter, with a lower cutoff frequency of 1, 000 Hz, an upper cutoff frequency of 2, 000 Hz, and a sampling rate of 8, 000 Hz. For more design options, see Designing Lowpass FIR Filters. Alternatively, you can use the Filter Builder app to implement all the designs presented here. The example highlights some of the most commonly used command-line tools in the DSP System Toolbox. Melden Sie sich bei Ihrem MathWorks Konto an Eigener Account Mein Community Profil. Get instant job matches for companies hiring now for MATLAB jobs in Gornalwood like Infrastructure, Engineering, Design and more. Lowpass Filter Design in MATLAB This example shows how to design lowpass filters. Legend('Before Filtering', 'After Butterworth Filtering') How to make a differentiator filter in filter design and analysis tool. (pi (n-L/2)) mysinc (L/2) 2fc Then I apply window: win blackman (L, 'symmetric') filtercoeffs (mysinc. Title('Comparison of One-sided Amplitude Spectra') In order to design a filter (windowing method), I first generate my sinc function, like so: L 20 fc 0.25 n (1:L)' mysinc sin (2pifc (n-L/2)). Title('One-sided Amplitude Spectrum after Butterworth Filtering') Title('One-sided Amplitude Spectrum before Filtering') ![]() Create a low-pass filter and then modulate it to the band-pass center frequency that you want. You can create a band-pass filter by the same method. % Generate and plot magnitude and phase responses The way to create a high-pass filter is to create a low-pass filter and then modulate it to the Nyquist frequency by multiplying it with a sinusoid whose frequency is the Nyquist frequency. = butter(n, Wn) % Compute filter coefficients = buttord(Wp, Ws, Rp, Rs) % Determine filter order and cutoff frequency
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