view functions/funcsMobilab/read_data_develop.m @ 0:2fadb31a9d55 tip

Import code by Vuegen et al

function [segments,samples,labels] = read_data_develop(directoryAudio,directoryAnnotation,new_fs)
%%
%   Mobilab 2012-2013  
%   
%   Input arguments:
%       - directoryAudi: 
%            Contains the path to the folder where the data is located
%       - directoryAnnotation:
%            Contains the path to the folders where the annotations are located
%       - new_fs:
%             Resample the .wav files to this sample frequency. If left
%             blank, no resampling occur
%   Output arguments
%       - segments is a cell structure:
%             Columns: # number of development examples
%             Rows: # numer of annotators
%             Each cell contains the segmented files from corresponding
%             development file and annotator
%       - samples is a cell structure:
%             Same structure as segments. Each cell contains the start and
%             stop time of the event.
%       - labels is a cell structure:
%             Same structure as segments. Each cell contains the labels of
%             the corresponding events
%% Defaults
down=1; if nargin < 3; down=0; end
%% Annotation
addpath(directoryAudio);
files=find_format(directoryAudio, '.wav');
names=files.names;
nrScripts = length(names);

% Preallocation for speed
segments=cell(1,nrScripts);
samples=cell(1,nrScripts);
labels=cell(1,nrScripts);

for(scriptNr=1:nrScripts)
   
   [x_temp fs] = wavread(names{1,scriptNr});
   if(down==1)
       x_temp = resample(x_temp,new_fs,fs);
       fs=new_fs;
   end,
       

        addpath(directoryAnnotation);
        files2=find_format(directoryAnnotation, 'txt');
        annotation=textread(files2.names{1,i}, '%s' ,'delimiter', '\t');
        startStop=zeros(length(annotation)/3,2);
        id=cell(length(annotation)/3,1);
        u=1;
        for(v=1:3:length(annotation))
            startStop(u,1)=str2num(annotation{v,1});
            startStop(u,2)=str2num(annotation{v+1,1});
            x{u,2}=fs;
            x{u,1}=x_temp(ceil(startStop(u,1)*x{u,2})+1:ceil(startStop(u,2)*x{u,2}));
            id{u,1}=annotation{v+2,1};
            u=u+1;
        end,
        segments{k,i}=x;
        samples{k,i}=startStop;
        labels{k,i}=id;
        rmpath(directoryAnnotation{k,1});
        clear x;
    end,
end