Frequency response At the corner frequency 10 rad/s there is a further −20 dB/decade change in gradient and so a 1/(1 + s/10) term. At ω = 1 the magnitude is 6 dB and so 6 = 20 lg K and K = 106/20 = 2.0. The transfer function is thus 2.0/s(1 + s)(1 + 0.1s).