y@0: function score = createScore(scoreLength,MIDI,timeFactor,freqFactor)
y@0: 
y@0: nbInstrument = length(MIDI);
y@0: instruments = cell(nbInstrument,1);
y@0: for ins = 1:nbInstrument
y@0:     instruments{ins} = midi2nmat( MIDI{ins});
y@0: end
y@0: %Score frame by frame
y@0: score = zeros(scoreLength,nbInstrument);
y@0: 
y@0: % instrument : onset, offset, frequency
y@0: for ins = 1:nbInstrument
y@0:     
y@0:     instruments{ins}(:,1) = max(1,round(instruments{ins}(:,6)*timeFactor)-1);
y@0:     instruments{ins}(:,2) = round((instruments{ins}(:,6) + instruments{ins}(:,7))*timeFactor);
y@0:     instruments{ins}(:,3) = 440/32*2.^((instruments{ins}(:,4)-9)/12);
y@0:     instruments{ins}(:,4:end) = [];
y@0:     for j = 1: size(instruments{ins},1)
y@0:         score(instruments{ins}(j,1):instruments{ins}(j,2),ins) = instruments{ins}(j,3)*freqFactor;
y@0:     end
y@0: end