Micro-Electro-Mechanical Systems Microphones: A Brief Review Emphasizing Recent Advances in Audible Spectrum...

Area of Science:

• Engineering
• Acoustics
• Materials Science

Background:

• Micro-Electro-Mechanical Systems (MEMS) microphones are key components in voice-enabled technologies.
• Commercial success exists, but challenges like residual stress, noise, and structural limitations persist.
• Ongoing research aims to enhance MEMS microphone performance for broader applications.

Purpose of the Study:

• To review recent advancements in MEMS microphone technology.
• To summarize transduction mechanisms, mechanical structures, and noise reduction strategies.
• To provide a comprehensive analysis of high-performance MEMS microphones for voice applications.

Main Methods:

• Literature review of MEMS microphone research.
• Analysis of transduction principles.
• Examination of diverse mechanical structure topologies.
• Evaluation of noise reduction techniques.

Main Results:

• Identification of key challenges in MEMS microphone development.
• Summary of various transduction mechanisms and their efficiencies.
• Overview of different mechanical designs for improved performance.
• Discussion of effective noise suppression methods.

Conclusions:

• MEMS microphones require continued innovation to overcome existing challenges.
• Advancements in structure and noise reduction are crucial for high-performance voice capture.
• This review offers insights into the current state and future directions of MEMS microphone technology.