Electrical Signal Modeling in Cochlear Implants. Study of Temperature and Humidity Effects

The present paper discusses the climatic effects of humidity and temperature on cochlear implant functioning and the quality of the electrical sound signal. MATLAB Simulink simulations were prepared, offering insights into signal behavior under such climatic parameter changes. A simulation setup of...

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Bibliographic Details
Published in:Micromachines (Basel) 2021-06, Vol.12 (7), p.785
Main Authors: Paun, Maria-Alexandra, Paun, Vladimir-Alexandru, Paun, Viorel-Puiu
Format: Article
Language:English
Subjects:
Antennas
Atmospheric attenuation
Atmospheric circulation
Atmospheric models
Blocking
cochlear implant
Cochlear implants
Deafness
Electrodes
Graphical representations
Hearing aids
Humidity
IIR filters
MATLAB
Medical equipment
Prostheses
Pulse generators
Radio communications
Random noise
Receivers & amplifiers
Sensors
Signal processing
Simulation
Simulink
Sound
temperature
Temperature effects
Transplants & implants
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Summary:The present paper discusses the climatic effects of humidity and temperature on cochlear implant functioning and the quality of the electrical sound signal. MATLAB Simulink simulations were prepared, offering insights into signal behavior under such climatic parameter changes. A simulation setup of the cochlear implant was developed, where a source type selection was used to change between a voice recording and a “chirp” sound. In addition, a DC blocking filter was applied to the input signal. A simulation code, with the application of the climatic influence via the air attenuation function, was developed. Thereby, the attenuation of temperature and humidity in the sound atmospheric circulation of the input signal, at T = 0 °C and RH = 0% and at T = 36 °C and RH = 40% was graphically represented. The results of the electrical pulse generator for each of the eight channels, with the IIR filter, Gaussian noise, temperature variation, humidity influence, and control of denoise block activity, were thus obtained.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi12070785