English 
Chinese As hands-free communication and voice recognition become standard in automotive systems, the demand for directional MEMS microphones with superior noise suppression and sensitivity has surged. Wuxi Silicon Source Technology Co., Ltd. (SiSTC) addresses this demand with a new generation unidirectional MEMS microphone module that delivers exceptional signal clarity—even under in-cabin noise and temperature fluctuations.
👉 Discover our full line of MEMS microphone solutions:
https://sistc.com/product-category/mems-microphone/
Design Innovation: Slit-Edged Membrane for High SNR
The microphone module is built around a capacitive MEMS design featuring a slit-edged membrane. This unique structure helps relieve residual stress in the diaphragm, improving its sensitivity and increasing the signal-to-noise ratio (SNR) to 62.4 dB.
Key performance highlights:
- ✅ 62.4 dB SNR for enhanced voice clarity
- ✅ Reduced residual stress for greater membrane sensitivity
- ✅ Durable MEMS structure for automotive environments
Unidirectional Acoustic Design
To achieve directional performance, the module utilizes dual acoustic ports—with a porous SU-8 filter installed on one side. This creates a phase delay, enabling unidirectional reception by suppressing noise from unwanted directions.
Directional Advantage:
- 🎯 Front-back ratio of 27.1 dB
- 🎤 Ideal for hands-free car communication and voice recognition
- 🚘 Compatible with automotive-grade system integration
Real-World Applications
This MEMS microphone module is especially suited for:
- In-car voice assistants
- Automotive infotainment systems
- Driver monitoring systems
- Smart cockpit environments
Looking for compact, high-SNR microphones for non-automotive environments? Check out our MEMS microphone series for consumer electronics and industrial IoT applications.
Why SiSTC for MEMS Microphones?
With advanced R&D in acoustic MEMS and package integration, SiSTC offers microphone modules that meet industry-grade SNR, directivity, and form factor standards. Our solutions are engineered for performance, reliability, and manufacturability at scale.
