Figure 8

From: Digital Signal Processing and Control for the Study of Gene Networks

Figure 8

(A) Any discrete-time signal (time-domain) can be decomposed into a collection of sine or cosine waves with different amplitudes, frequencies, and phases (frequency domain). (B) The frequency response of H(z) can be illustrated using Bode plot. The effect of extrinsic noise signals added to xprotein levels with cycle period shorter than 30 min (high-frequency noise) will be reduced in yprotein expression, indicating Eq. 4 is a low-pass filter that passes low-frequency xprotein signals while attenuating high-frequency xprotein signals.