Modelling, Optimization, and Characterization of Microacoustic (MEMS) Transducers in Hearing Aids

Georgios Printezis


Background

During the past decade the market of MEMS microphones has been growing considerably in consumer electronics. MEMS microphones have developed to the point where they are now the default choice for many audio capture applications that require small size, high sound quality, high performance, and reliability. Due to their size and specifically their high amplification, and low power constraints as well as the desired stability in humidity and temperature levels, hearing aids exhibit a special use case. Even though non-linear effects can be neglected in other consumer electronics they pose a much higher problem and challenge in hearing aids.

 

Project

The plan is to develop a 3D model of a MEMS microphone utilizing numerical modeling and optimization methods and taking into account current fabrication techniques. Additionally, standard pre-amplifier designs and the signals fidelity to the output will be studied in terms of noise and interference.

 

Perspective

The goal of this project is to illuminate the most critical aspects and figure out ways that mitigate the effects of them with new optimized and feasible designs.

 

 

Name of supervisors

Frieder Lucklum & Niels Aage

 


Contact

Georgios Printezis
PhD student
DTU Electro