An adaptive digital cochlear model

An adaptive digital time-domain model of the human cochlea is presented. The model consists of the middle ear, the mechanical motion of the cochlea, and the neural transconduction of the inner hair cells. The traveling waves on the cochlear partition are represented by a cascade of digital filter sections, and the cochlear micromechanics are modeled by a second filter that sharpens the excitation to the inner hair cell. The model incorporates dynamic-range compression by adjusting the Q of each cochlear filter section and second filter in response to the second-filter velocity and the averaged neural firing rate.<>