Fig. 7

The cochlear filter for an abstract model. The amplitude (on a relative scale) of the cochlear filter calculated for the invariance group λ generated by the vector field $v(\omega )=\omega log\frac{\omega }{R}$. This is a panoramic view, showing the amplitude on a relative scale as a function of the distance d to the stapes for the frequencies $f=200,400,800,1\text{,}600,3\text{,}200\text{and}6\text{,}400\text{Hz}$.