Abstract
Payton [K. L. Payton, J. Acoust. Soc. Am. 83, 145–162 (1988)] constructed a model of the auditory periphery including a simulation of basilar membrane (BM) mechanics based on the numerical solution of the differential equation relating membrane displacement to stapes velocity, membrane compliance, and membrane damping. Payton indicated that the model membrane length parameter was arbitrarily doubled to 5.0 cm in order to avoid what appeared to be reflections. Even with this compensation, Payton relied on the fact that the middle-ear model essentially removed frequency components significantly below 1000 Hz, thereby attenuating the reverse traveling waves before they reached the region of the basilar membrane being modeled. In using the model, an error in the basilar membrane simulation module was isolated due to a data mapping discrepancy. Correcting this error eliminates the spurious response, restores the model to physiological dimensions, improves the execution speed versus resolution trade-off in the membrane component, and corrects a phase error introduced to the model.
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