Title :
Audio-frequency characteristics of multilayer piezoelectric crystal actuator for use in hearing implant
Author :
Abel, E.W. ; Wang, Z.G. ; Mils, R.P. ; Liu, Y.
Author_Institution :
Dept. of Biomed. Eng., Dundee Univ., UK
fDate :
3/16/2000 12:00:00 AM
Abstract :
A multilayer piezoelectric actuator has been evaluated for use in a hearing implant. Its frequency response was flat up to 20 kHz. Initial in-vitro trials gave stapes displacement from stimulation at 3.5 V RMS, which is equivalent to that from acoustic stimulation at 90 dB SPL below 1 kHz, increasing to 120 dB at 8 kHz. This performance meets accepted clinical specifications
Keywords :
frequency response; hearing aids; piezoelectric actuators; prosthetics; 0.1 to 20 kHz; 120 dB; 3.5 V; 90 dB; accepted clinical specifications; audio-frequency characteristics; frequency response; hearing implant; multilayer piezoelectric crystal actuator; stapes displacement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000426
