Investigation on missing fundamental by a cochlea model generating spontaneous discharge

It is considered that the pitch (f₀) is produced in auditory centers when we hear a complex tone of f₁=n f₀, and f₂=(n+1) f₀. f₀ is known as missing fundamental. By a cochlea model we try to make clear the mechanism of how the missing fundamental is generated. The following signal is applied to the cochlea model: a₁□sin (2∂f₁ t) + a₂□sin (2∂f₂ t). We make an aggregated autocorreleogram of output pulse trains from a cochlea model. We investigate methodically the relation between the information of the missing fundamental in the output pulse trains and the values a₁, and n, k in f₁=n f₀, f₂=(n+k) f₀ by the aggregated autocorreleogram.