Dawn@4: function [HNR] = detect_MFCC( sampleWavFileName, OVERWRITE )
Dawn@4: 
Dawn@4: sampleFileName = sampleWavFileName( 1 : length( sampleWavFileName ) - 4 );
Dawn@4: [x, fs, frameLength, noOfFrames] = openFile( sampleWavFileName );
Dawn@4: 
Dawn@4: %---------------- GET THE SILENT FRAME VALUES -------------------
Dawn@4: 
Dawn@4: % only wish to consider pitch values from voiced frames.
Dawn@4: % silent and unvoiced frames will produce pitch values that
Dawn@4: % are random and therefore will bias our results
Dawn@4: 
Dawn@4: segmentFrames = detect_Silence( sampleWavFileName, 0 );
Dawn@4: [ silentFrames ] = getSilentDataArray( segmentFrames, noOfFrames );
Dawn@4: 
Dawn@4: % open original calculation
Dawn@4: fileName = [ sampleFileName '_MFCC.txt'];
Dawn@4: fileID = fopen( fileName );
Dawn@4: 
Dawn@4: if(( fileID <= 0 ) || ( OVERWRITE )) %does the file exist?
Dawn@4:     % no
Dawn@4:     disp('WARNING: MISSING MFCC FILE');
Dawn@4:     %calculate it
Dawn@4:     mfcc = calculate_MFCC( x, fs, frameLength, noOfFrames );
Dawn@4:     
Dawn@4:     fileID = fopen( fileName, 'w');
Dawn@4:     for i = 1 : (noOfFrames-1) 
Dawn@4:         if( silentFrames(i) == 1 )
Dawn@4:             % frame is not silent
Dawn@4:             fprintf(fileID, '%d %s \n' , i, num2str( mfcc(:,i)' ));
Dawn@4:         else
Dawn@4:             % set to zero 
Dawn@4:             mfcc(:,i) = 0;
Dawn@4:         end
Dawn@4:     end
Dawn@4:     fclose( fileID );
Dawn@4:     fileID = fopen( fileName );
Dawn@4: end
Dawn@4: 
Dawn@4: 
Dawn@4: mfcc = fscanf( fileID, '%f', inf );
Dawn@4: mfcc = buffer(mfcc,14);     %   13 MFCC values and one frame number
Dawn@4: mfcc = mfcc(2:14,:)';
Dawn@4: 
Dawn@4: fclose(fileID);