Title :
Analogue micropowered log-domain tone controller for auditory prostheses
Author :
Germanovix, W. ; Neill, G.O. ; Toumazou, C. ; Drakakis, E.M. ; Kitney, R.I. ; Lande, T.S.
Author_Institution :
State Univ. of Londrina, Brazil
fDate :
5/28/1998 12:00:00 AM
Abstract :
A micropower tone-control circuit comprising two first-order log-domain filters and a subtractor built with MOS transistors in weak inversion is described. The tone-controller is capable of providing bass cut/boost and treble cut operations. This circuit is being used in new designs of a conventional (acoustic) hearing-aid and cochlear implant
Keywords :
MOS integrated circuits; active filters; analogue processing circuits; circuit tuning; hearing aids; integrating circuits; prosthetics; MOS transistors; analogue tone controller circuit; auditory prostheses; bass cut/boost operations; cochlear implant; first-order log-domain filters; hearing-aid; micropowered log-domain tone controller; subtractor; treble cut operations; weak inversion;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980780
