How do I plot the sound that is stored in the variable complete_sound = [ ];

function songmaker(hObject, handles)

global player;

notestr = get(handles.edit1, 'String');

note_struct = regexp(notestr, '(?<note>[ABCDEFG]#?)', 'names');

note_list = {note_struct.note};

complete_sound = [];

for note_idx = 1 : length(note_list)

    note_selected = note_list{note_idx};
    switch note_selected
      case 'A'
          Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_A=440; %Frequency of note A is 440 Hz
          A=(sin(2*pi*F_A*t));
          complete_sound = [complete_sound,A];

      case 'C'
           Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_C=261.626; %Frequency of note A is 440 Hz
          C=sin(2*pi*F_C*t);
          complete_sound = [complete_sound,C];
        case 'G'
            Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_G=391.995; %Frequency of note A is 440 Hz
          G=sin(2*pi*F_G*t);
          complete_sound = [complete_sound,G];
        case'F'
            Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_F=349.228; %Frequency of note A is 440 Hz
          F=sin(2*pi*F_F*t);
          complete_sound = [complete_sound,F];
        case 'D'
            Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_D=293.665; %Frequency of note A is 440 Hz
          D=sin(2*pi*F_D*t);
          complete_sound = [complete_sound,D];
        case 'E'
            Fs=8000;
          Ts=1/Fs;
          t=[0:Ts:0.5];
          F_E=329.628; %Frequency of note A is 440 Hz
          E=sin(2*pi*F_E*t);
          complete_sound = [complete_sound,E];

    end
  end
  player=audioplayer(complete_sound,Fs);

Answer 1

[Walter Roberson]

t = (0:length(complete_sound)-1)/Fs;
plot(t, complete_sound);

[MAX]

Is it possible for the graph to keep changing if the note being played gets changed?

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/15550-audio-player-demo-with-dynamic-crosshairs?focused=5092195&tab=example

https://www.mathworks.com/matlabcentral/answers/222105-make-the-slider-move-as-the-music-is-playing

[MAX]

I don't understand any of it. I am new to Matlab(just a week of programming).

Is there a simpler way so that I can understand.

[Walter Roberson]

No, there is no simple way.

[MAX]

complete_sound=[];

Is there a way to save the sound that is stored in the above array to a .wav format?

[Walter Roberson]

audiowrite('FileNameGoesHere.wav', complete_sound.', Fs);

Note: this expects that complete_sound is still a row vector of data. It would also work if complete_sound has somehow become a column vector of data, or if it has become multiple rows of sound data, one row per channel. It would, however, fail if complete_sound has become multiple columns of data, one column per channel (which is the format that audioread of stereo would give you.)

[MAX]

It did work. Thanks