Dawn@4: function [ silentFrames ] = getSilentDataArray( silentSegments, noOfFrames )
Dawn@4: 
Dawn@4: %---------------- GET THE SILENT FRAME VALUES -------------------
Dawn@4: % only wish to consider values from voiced frames.
Dawn@4: % silent frames will produce data values that
Dawn@4: % are random and therefore will bias our results
Dawn@4: % returns an array of values where '1' indicates a non-silent frame
Dawn@4: 
Dawn@4:     silentFrames = zeros(1,noOfFrames);
Dawn@4:     [m n] = size(silentSegments);
Dawn@4:     if(  silentSegments(1,1) == 0 && silentSegments(1,2) == 0 )
Dawn@4:         % we have only one segment - the entire file
Dawn@4:         silentSegments(1,1) = 1;
Dawn@4:         silentSegments(1,2) = floor(length(x)/frameLength);
Dawn@4:         [m n] = size(silentSegments);
Dawn@4:     end
Dawn@4:     
Dawn@4:     % check for start at sample 0
Dawn@4:     if( silentSegments(1,1) == 0)
Dawn@4:         silentSegments(1,1) = 1;
Dawn@4:     end
Dawn@4:     
Dawn@4:     for i=1:m
Dawn@4:         start = silentSegments(i,1);
Dawn@4:         stop = silentSegments(i,2);
Dawn@4:         if( stop > noOfFrames )
Dawn@4:             stop = noOfFrames;
Dawn@4:             silentSegments(i,2) = noOfFrames;
Dawn@4:         end
Dawn@4:             
Dawn@4:         if( start == 0 ) 
Dawn@4:             start = 1;
Dawn@4:         end
Dawn@4:         
Dawn@4:         
Dawn@4:         silentFrames( start : stop ) = 1;
Dawn@4:     end
Dawn@4:     
Dawn@4: end
Dawn@4: