The taste sensor is a chemical sensor that attempts to approximate the taste intensity perceived by people. According to the Weber-Fechner Law, for moderate stimuli, the intensity of the human sensory response (E) is proportional to the logarithm of the intensity of the stimulus (R). This can be expressed as:

 

E=ClogR

 

where C is a constant. The taste-sensor response is also proportional to the logarithmic value of the taste sample concentration, so the value of the taste sensor response approximates the human taste sensation.