53 lines
843 B
Matlab
53 lines
843 B
Matlab
pkg load signal
|
|
[y,fs] = audioread('modulator22.wav');
|
|
audiowrite('outmodulator22.wav',y,fs/2);
|
|
n = length(y);
|
|
t=0:1/fs:(n-1)/fs; % time range
|
|
<<<<<<< HEAD
|
|
figure;
|
|
plot(t,y);
|
|
xlabel('time (s)');
|
|
ylabel('amplitude');
|
|
|
|
|
|
[power,duration]=frequencySpectrum(y, fs, false);
|
|
figure;
|
|
plot(duration,power);
|
|
=======
|
|
i=1;
|
|
ldft=[];
|
|
while (i<6)
|
|
[power,duration]=frequencySpectrum(y, fs, false);
|
|
disp(i);
|
|
disp (duration);
|
|
ldft(i)=duration;
|
|
i=i+1;
|
|
end
|
|
disp (ldft);
|
|
lfft=[];
|
|
i=1;
|
|
while (i<6)
|
|
[power,duration]=frequencySpectrum(y, fs, true);
|
|
disp(i);
|
|
disp (duration);
|
|
lfft(i)=duration;
|
|
i=i+1;
|
|
end
|
|
disp (lfft);
|
|
i=1;
|
|
ratio=[];
|
|
while (i<6)
|
|
ratio(i)=(lfft(i))/(ldft(i));
|
|
i=i+1;
|
|
end
|
|
disp('ratio');
|
|
disp(ratio);
|
|
avgratio=mean(ratio);
|
|
disp('avgratio');
|
|
disp(avgratio);
|
|
|
|
stdratio= std(ratio);
|
|
disp('stdratio');
|
|
disp(stdratio);
|
|
>>>>>>> estevan
|