How do I read all the wav files in a directory from a single loop ?

I have Emo-DB databse containing file name wav files with file name as following

1    03a01Ab.wav     
2    03a01Eb.wav    
3    03a01Fa.wav     
4    03a01Lb.wav     
5    03a01Nc.wav       
6    03a01Tc.wav      
7    03a01Wa.wav     
8    08a01Aa.wav      
9    08a01Ab.wav      
10    08a01Ec.wav   
11    08a01Fd.wav    
12    08a01Lc.wav     
13    08a01Na.wav      
14    08a01Td.wav    
15    08a01Wa.wav  
16    08a01Wc.wav     
17    09a01Aa.wav   
18    09a01Ea.wav    
19    09a01Fa.wav       
20    09a01Lc.wav      
21    09a01Nb.wav

Here    

• # Positions 1-2: number of speaker
• # Positions 3-5: code for textspoken
• # Position 6: emotion
• # Position 7: if there are more than two versions these are numbered a, b, c ....

Now how do I read all these files using using audioread in a single loop. I tried the following code but it doesn't work:

for i=0 
    for j=0:0 
        for k=0:0 
            fid =  fopen(filename,'a');

              file =sprintf('%s%d%s%d%d.wav', 'D:\BTP\0 (1)\', i,'\',j,k);
              [s, fs] = audioread(file);
          end
      end 
end

[Ameer Hamza]

What is not working? You did not give error information. Your for-loops are also incorrect. For a possible solution see the answer below.

[Stephen23]

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

Answer 1

[Ameer Hamza]

Instead of trying to create file names yourself, uou can use dir command to get list of all files in the current folder. Then use the list to read all files with an extension of '.wav'.

files = dir;

count = 0;

for i = files'
    if length(i.name) > 4 && i.name(end-3:end) == ".wav"   % only read file if filename is greater then four and extension is '.wav'
        count = count+1;
        [f{count} fs{count}] = audioread(i.name); 
    end
end

This script will load all data in cell arrays f and fs.

[Jan]

Or easier:

FileList = dir('D:\BTP\0 (1)\*.wav');
for File = FileList'
   count                 = count + 1;
   [f{count}, fs{count}] = audioread(File.name); 
end

[kalyan chakravarthi]

is it saying not enough enough arguements what to do now

Answer 2

[Dinesh Iyer]

You can use the fileDatastore with the audioread as the Custom function.

https://www.mathworks.com/help/matlab/ref/matlab.io.datastore.filedatastore.html