% max is 1594.2345
% min is -967.9308

v={'ar','er','ee','or','oo'};
df={'zero','quarter','half','one','two','four'};
m=0;
for k=1:length(v)
	vowel1=load([char(v(k)) '.zero.mat']);
	for i=1:length(v)
		for j=1:length(df)
			vowel2=load([char(v(i)) '.' char(df(j)) '.mat']);
			sum=vowel1.data+vowel2.data;
			m=min(m,min(sum));
		end
	end

end
m