How can I automatically let Matlab input the file in sequence?

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alan daniel 2020-7-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/568038-how-can-i-automatically-let-matlab-input-the-file-in-sequence

评论： alan daniel 2020-7-21

采纳的回答： Roger J

在 MATLAB Online 中打开

How can I let Matlab automatically input the file itself rather than one by one myself?

I mean, I want to put `Sample 1.wav` and then output `Sample 1.png` and then

put `Sample 2.wav` and then output `Sample 2.png` and then put `Sample 3.wav` and then output `Sample 3.png`

I do not want to type myself 1, 2, 3 and rather let the matlab run itself from `1 to 1,000`

    [y,Fs] = audioread('sample1.wav');
    spectrogram(y,'yaxis')
    saveas(gcf,'sample1.png')

Then

   [y,Fs] = audioread('sample2.wav');
    spectrogram(y,'yaxis')
    saveas(gcf,'sample2.png')

Then

    [y,Fs] = audioread('sample3.wav');
    spectrogram(y,'yaxis')
    saveas(gcf,'sample3.png')

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alan daniel 2020-7-21

Thanks. it works well!

Roger J 2020-7-21

great news Alan.

What did you go with, my suggestion or did you use Stephen's solution?

If you used the solution, please mark it as the answer.

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采纳的回答

Roger J 2020-7-21

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/568038-how-can-i-automatically-let-matlab-input-the-file-in-sequence#answer_468771

在 MATLAB Online 中打开

Can you try the following:

>> for i=1:1000
     fn_read  ="sample"+i+".wav"; % this is the file name to read from
     fn_read  = char(fn_read);    % convert the string to a char array
     fn_write ="sample"+i+".png"; % this is the file name to write to
     fn_write = char(fn_write);   % convert the string to a char array
     [y,Fs] = audioread(fn_read);
     spectrogram(y,'yaxis')
     saveas(gcf,fn_write)
end