Design a matlab code that: 1-play sound 2- add noise to the sound 3- filter the...
Design a matlab code that:
1-play sound
2- add noise to the sound
3- filter the noised signal using fir or iir filter
Note: FIR: Finite impulse response filter
IIR: Infinite impulse response filter
Please make code simple.
don't copy other from other codes.
Homework Answers
Hello,
Please find
the answer attached as under. Please give a thumbs up
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ahead!
************ Matlab Code ************
%% create filter parameters
Fs =
8192;
% Sampling Frequency (Change If Different)
Fn =
Fs/2;
% Nyquist Frequency
Wp = [150
5800]/(6*Fn);
% Normalised Passband
Ws = [ 50
6100]/(6*Fn);
% Normalised Stopband
Rp =
1;
% Passband Ripple (dB)
Rs =
30;
% Stopband Ripple (dB)
[n,Ws] =
cheb2ord(Wp,Ws,Rp,Rs);
% Chebyshev Type II Order
[b,a] =
cheby2(n,Rs,Ws);
% IIR Filter Coefficients
[SOS,G] =
tf2sos(b,a);
% Convert To Second-Order-Section For Stability
figure(1)
freqz(SOS, 4096,
Fs)
% Check Filter Performance
%% load data file
load handel.mat
filename = 'handel.wav';
audiowrite(filename,y,Fs);
clear y Fs
[y,Fs] = audioread('handel.wav');
%% filter the signal
filt_sig = filtfilt(SOS,G,y);
sound(filt_sig,Fs);
******** End of Code *************
*****************************************************************
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Design a matlab code that:
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