Matlab foder and file read in loop & Struct

function speakerData=DirFileRead(dirName, sentenceNumPerSpeaker);

% speakerDataRead: Read wave file info for speaker identification from a given directory.

% Usage: speakerData=DirFileRead(dirName, sentenceNumPerSpeaker);

% dirName: root directory that contains subdirectory of each speaker, in which the wave files reside.

% senenceNumPerSpeaker: How many sentences to read for each speaker

% speakerData: the retrieved data structure

% Adapted from Roger Jang

if nargin<1

fprintf('We will make a demo here');

fprintf('First we will create fake folder with one file saved under temp_demo/dir1/1a1 ');

mkdir('temp_demo/dir1/1a1');

mkdir('temp_demo/dir1/1a2');

mkdir('temp_demo/dir2/2b1');

mkdir('temp_demo/dir2/2b2');

save temp_demo/dir1/1a1/space.txt;

dirName='temp_demo'; sentenceNumPerSpeaker=1;

fprintf('read dir and file');

speakerData=DirFileRead(dirName, sentenceNumPerSpeaker)

fprintf('Display result:');

fprintf('Total %d files/folders are under %s', length(speakerData), dirName);

fprintf('File/Folder 1 is: %s', speakerData(1).name );

end

if (dirName(end)~='/') | (dirName(end)~='\'); dirName=[dirName, '/']; end

% dirName='E:\SI_Ref\data_digit\waveFile';

% ====== Collect feature from all wave files

speakerData = dir(dirName);

speakerData(1:2) = []; % Get rid of '.' and '..'

speakerData=speakerData([speakerData.isdir]); % Take directories only

speakerNum=length(speakerData); % speakerNum=28

for i=1:speakerNum

waveFiles = dir([dirName, speakerData(i).name, '/*.wav']); % this is euqal to waveFiles = dir('dirName\speakerData(i).name/*.wav');

% eg; [dirName, speakerData(i).name, '/*.wav']=E:\SI_Ref\data_digit\waveFile\10028/*.wav

% This line works the same as the next line.

% waveFiles = dir([dirName, '\',speakerData(i).name, '/*.wav']);

waveNum=length(waveFiles);

% fprintf('%d/%d: Reading %d wave files recorded by %s\n', i, speakerNum, waveNum, speakerData(i).name);

for j=1:waveNum, % wavNum=20

if j>sentenceNumPerSpeaker, break; end % sentenceNumPerSpeaker=2

speakerData(i).sentence(j).path = [dirName, speakerData(i).name, '/', waveFiles(j).name];

% fprintf('\t%d/%d: Processing %s...\n', j, waveNum, speakerData(i).sentence(j).path);

speakerData(i).sentence(j).text=waveFiles(j).name(1:end-4); % "end-4" means truncate the part of ".wav"

% =10028-0b, ie, the name of the wave file without the extention name

end

end

speakerData=rmfield(speakerData, 'isdir'); % get rid of 'isdir' field

speakerData=rmfield(speakerData, 'bytes'); % get rid of 'bytes' field

%self_demo

%wav_dir='E:\SI_Ref\Data_Demo';speakerDataRead(wav_dir,1);