how to run my conversion program using loops

Hi

I have a program of resampling and conversion wav to pcm

so I have a main folder that contains several subfolders

and each subfolder contains a wav file and a text file

I want to run my program on all wav files in all subfolders, I can not do it,Thank you very much for your help.

here is my program:

[x, fs] = audioread(a_filename);
% resample:
fsin    = fs;
fsout   = 22050;
m       = lcm(fsin,fsout);
up      = m/fsin;
down    = m/fsout;
x_22    = resample(x, up, down);
audiowrite([a_filename,'_22050','.wav'], x_22, fsout);

% convert to PCM 16 bit
precision = 'int16';
fidr      = fopen([a_filename(1:11), '_22050','.wav'], 'r');  % open .wav file to read 
fidw      = fopen([a_filename(1:11), '_22050','.pcm'], 'wb'); % open .pcm file to write
w         = int16(fread(fidr, inf, precision));% read .wav file
fwrite(fidw, w, precision); % write .pcm file
fclose(fidr); 
fclose(fidw);

thank you in advance

Answer 1

[per isakson]

Try this

%%
main_folder = 'c:\whatever\mainfolder';
sad = dir( fullfile( main_folder, '**', '*.wav' );
sad = reshape( sad, 1,[] );

for wav = sad
   ffs = fullfile( wav.folder, wav.name );
   disp( ffs )
end

If recursive dir call, "**", is not avaiable in your Matlab release try Recursive directory listing - Enhanced RDIR . (There are several rdir() in the File Exchange.)

[Rik]

Just to confirm: the ** syntax was not available in the R2014a dir function.

[per isakson]

Recursive directory listing by Gus Brown is "Created with R2007a, Compatible with any release". I've used it for a long time and cannot remember it having caused me any problem.

[Rik]

I just meant you do indeed need to use such a function, instead of using built-in Matlab tools. I'll edit the comment to make it more clear.