A digitally implementable ear-type lattice

Author

Sacristan, Miguel A. ; Rodella, Victoria ; Moskowitz, Mosheh T. ; Sellami, Louiza ; Newcomb, Robert W.

Author_Institution

Fac. de Inf., Univ. Politecnica de Madrid, Spain

Volume

3

fYear

2000

fDate

2000

Firstpage

1090

Abstract

The internal auditory system emits slightly detectable sounds (Kemp echoes) as a response to the auditory input. This response is able to be mimicked via a cascade of two-port lattices and has been previously simulated with analog amplifiers. This paper presents a digital implementation scheme using fixed-point, two´s complement arithmetic with the wordlength and decimal precision based on generic parameters. The advantages are in accuracy and cancellation of initial cycle oscillations due to initial conditions normally present in both numerical and continuous implementations

Keywords

digital filters; ear; fixed point arithmetic; lattice filters; physiological models; prosthetics; two-port networks; Kemp echoes; cochlea model; cochlear implant; decimal precision; digitally implementable ear-type lattice; fixed-point two´s complement arithmetic; generic parameters; initial cycle oscillations; internal auditory system; two-port lattices; wordlength; Biomembranes; Delay; Ear; Frequency; Hair; Lattices; Reflection; Resonance; Scattering; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on

Conference_Location

Lansing, MI

Print_ISBN

0-7803-6475-9

Type

conf

DOI

10.1109/MWSCAS.2000.951405

Filename

951405