clear;
min = 10;
max = 20;
rate = 1/(max*4*1000);
result = zeros(0, 2^16);
for n = min:max
    noise = sin(2*pi*n*1000*(0:rate:2));
    result = [result noise];
end

wavwrite(result, max*4*1000, 16, '10khz_20khz_1sec_sample.wav');