making loop mat lab

Question

sam aldoss 2018-10-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/422729-making-loop-mat-lab

编辑： Stephen23 2021-4-26

hello

am working no signals using the code below I want to make this code to run for more then one folder can someone help please

clc,clear ,close all

 % get a section of the sound file
[x, fs] = audioread('a14.wav');   % load an audio file
x = x(:, 1);                        % get the first channel
N = length(x);                      % signal length
t = (0:N-1)'/fs;                     % time vector
a14 = table(t, x);

writetable(a14, 'a14.csv', 'Delimiter',',')

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

sam aldoss 2018-10-8

no its not duplicate the code that I got it only load one file at time which good but think if you have more then 3000 file how you can run this code

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephen23 2018-10-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/422729-making-loop-mat-lab#answer_340245

编辑：Stephen23 2021-4-26

在 MATLAB Online 中打开

"... but think if you have more then 3000 file how you can run this code"

Start by reading the MATLAB documentation:

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

This example is based on the one in the help:

P = 'directory where the files are saved';
S = dir(fullfile(P,'*.wav'));
S = natsortfiles(S); % optional, see below
for k = 1:numel(S)
    [x,fs] = audioread(fullfile(P,S(k).name));
    ... your processing
    S(k).data = any array that you want to store
end

All of the data will be in the data field of the structure S:

https://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

If you want the filenames to be read in alphanumeric order then you will need to sort them. An easy way to sort filenames into alphanumeric order is to download my FEX submission natsortfiles.