A2_Task3

Fs = 20000;
k=0;
j=0.2;
number = input('Please enter a telephone number \n','s');
digits = str2double(number);

for i = 0 : 1 : length(number)

    display(i)
    t = linspace(0,0.2,Fs);
    digit = floor(mod(digits,10))
    digits = floor(digits/10);
    switch digit
        case 0
            w_ver = 0.15*pi*2000;
            w_hor = 0.15*pi*400;
        case 9
            w_ver = 0.15*pi*4000;
            w_hor = 0.15*pi*800;
        case 8
            w_ver = 0.15*pi*6000;
            w_hor = 0.15*pi*1200;
        case 7
            w_ver = 0.15*pi*8000;
            w_hor = 0.15*pi*1600;
        case 6
            w_ver = 0.15*pi*10000;
            w_hor = 0.15*pi*2000;
        case 5
            w_ver = 0.15*pi*20000;
            w_hor = 0.15*pi*4000;
        case 4
            w_ver = 0.15*pi*40000;
            w_hor = 0.15*pi*8000;
        case 3
            w_ver = 0.15*pi*10000;
            w_hor = 0.15*pi*20000;
        case 2
            w_ver = 0.15*pi*30000;
            w_hor = 0.15*pi*40000;
        case 1
            w_ver = 0.15*pi*50000;
            w_hor = 0.15*pi*80000;
    end

            s1 = 0.15*cos(w_hor*t);
            s2 = 0.15*cos(w_ver*t);
            signal = [s1;s2];
            sound(sum(signal),Fs);
            pause(0.5);
end