run a loop until a sound plays

Question

Gaetano Gaballo 2021-2-16

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/747082-run-a-loop-until-a-sound-plays

评论： Gaetano Gaballo 2021-3-2

Hi,

I have written the following code to play a little music while images keep appearing in random order.

The loop now has a simple index going from 1 to 50. However I would like that the random show goes on until the music stops. In other words, I would like to index the loop to the actual duration of the mucis played. There is any way to do that?

Thanks, g.

fullname = 'C:\path of the music file';

[y, Fs] = audioread(fullname);

PO=audioplayer(y,Fs);

play(PO)

for i=1:50

red_shirts = dir('*.png');

numberOfImages = length(red_shirts);

randomIndex = randi(numberOfImages);

randomImage = imread(red_shirts(randomIndex).name);

imshow(randomImage);

end

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Answer 1

jibrahim 2021-2-18

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https://ww2.mathworks.cn/matlabcentral/answers/747082-run-a-loop-until-a-sound-plays#answer_627112

在 MATLAB Online 中打开

% Set this to the folder containing your images
imageFolder = pwd;
imd = imageDatastore(pwd,'IncludeSubfolders',true);
imd = shuffle(imd);
% Set this to your audio file
fullname = 'FunkyDrums-44p1-stereo-25secs.mp3';
[x,fs] = audioread(fullname); 
p = audioplayer(x,fs);
play(p)
tnext = 0;
while isplaying(p)
    
    tnext = tnext + fs;
    
    randomImage = read(imd);
    imshow(randomImage);
    if imd.progress==1 % Reset if you read all the images
        imd.reset
    end
    
    while p.CurrentSample < tnext && isplaying(p)
        pause(1e-3); % wait till next second
    end
    
end