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# Untitled

a guest Feb 17th, 2019 71 Never
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1. clear all;
2. close all;
5.
6. %Creating the vector according to which delay is varied
7. a= 0.01;
8. b= 0.4;
9. low_n = round(a*fs);
10. high_n = round(b*fs);
11.
12. delay_step = 2 /(1/fs);
13. n = low_n;
14. no_points = length(y(:,1));
15. out_wav(:,1) = zeros(1,no_points);
16. fwd_back = 0;
17. ifs = 0;
18. saved_signal = 1:high_n;
19. k=1;
20.
21. for i=1:no_points
22.     if(fwd_back==0)
23.        ifs = ifs +1;
24.        delay(i) = ((high_n-low_n)/(2*fs))*ifs+low_n;
25.     end
26.
27.     if(ifs == 2*fs)
28.       fwd_back = 1;
29.       ifs = ifs -1;
30.     end
31.
32.     if(fwd_back==1)
33.        ifs = ifs -1;
34.        delay(i) = ((high_n-low_n)/(2*fs))*ifs+low_n;
35.        if(ifs == 0)
36.            fwd_back = 0;
37.        end
38.     end
39.
40.    if (k<=high_n)
41.        saved_signal(k) = y(i);
42.        k = k+1;
43.    else
44.        k=1;
45.    end
46.
47.    %n(i) = i-delay(i);
48.    %if uint32(n(i))>0
49.    if uint32(i>low_n*2)
50.         %out_wav(i) = y(i)+y(uint32(n(i)));
51.         signal_before = k - uint32(delay(i)) + 1;
52.         out_wav(i) = y(i)+ saved_signal(signal_before);
53.    else
54.         out_wav(i) = y(i);
55.    end
56.
57. end
58.
59. p = audioplayer(out_wav,fs);
60. play(p);
61. plot(out_wav);
62. hold on;
63. plot(y);
64. pause;
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