arrange file length matlab

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sam aldoss
sam aldoss el 17 de Oct. de 2018
Comentada: sam aldoss el 17 de Oct. de 2018
hello everyone
I got some files that has a length 20000 cell and the others are shorter then 20000 . I want to make these short files to complete the set of cell 20000 with replacing the missing with ones or zeros .
and am using this code to read the files
for k = 1:numfiles
myfilenames = sprintf('a%d.wav', k);
[mydata{k}, myfs{k}] = audioread(myfilenames,[1,2000]);
end
  1 comentario
Jan
Jan el 17 de Oct. de 2018
What is the purpose of "[1, 2'000]"? You mention "20'000" also. Is this a typo? What does "cell" mean? Remember that cell is a specific type of array in Matlab. Replacing with "ones or zeros" - please decide this by your own. What does "make these files to complete" mean? Do you want to create files with a standard length or does the question concern the arrays in Matlab only?

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Jan
Jan el 17 de Oct. de 2018
Editada: Jan el 17 de Oct. de 2018
Maybe:
for k = 1:numfiles
File = sprintf('a%d.wav', k);
[signal, myfs{k}] = audioread(File);
if size(signal, 1) < 20000 % Pad signal with zeros
signal(20000, :) = 0;
end
mydata{k} = signal;
end
Usually "data" is a sufficient name already, while "mydata" is a tiny overkill - of course these are your data ;-) Especially "myfilenames" is confusing to specify one file.
  1 comentario
sam aldoss
sam aldoss el 17 de Oct. de 2018
thanks man you really save me

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Más respuestas (1)

KSSV
KSSV el 17 de Oct. de 2018
A{1} = rand(50,1) ;
A{2} = rand(40,1) ;
A{3} = rand(60,1) ;
L = max(cellfun(@length,A)) ; % get maximum length
iwant = cell(size(A)) ;
for i = 1:length(A)
iwant {i} = zeros(L,1) ;
iwant{i}(1:length(A{i})) = A{i};
end
  4 comentarios
Jan
Jan el 17 de Oct. de 2018
@sam aldoss: "does not work" is a weak description of the occurring problem. Please share all information you have to make it as easy as possible to help you. The need to guess the details is not useful. Thanks.
Jan
Jan el 17 de Oct. de 2018
@KSSV: cellfun('length', C) is more efficient than cellfun(@length, C).

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