Top Professional Advantages
True A/B Role Separation: Independently processes and isolates voices from two opposite directions—ideal for face-to-face interactions.
Precision Directivity (≥60°): Focuses on the speaker while suppressing off-axis human voices by ≥12dB.
Split-Board Versatility: The ultra-slim mic-bar (53x6mm) is separated from the main controller (38x38mm) for seamless integration into slim device frames.
Hardware-Level Privacy: Dedicated physical gain dial for volume and a one-key mute button for instant privacy management.
Optimized for AI Engines: High-fidelity 16-bit/48KHz sampling provides the “clean” audio required by LLMs and speech-to-text engines like ChatGPT or Google Assistant.
Full Technical Specifications
1. Acoustic Performance
| Item | Specification | Benefit |
| Microphone Type | Dual-Directional Independent Array | Precise 1v1 voice isolation |
| Number of Mics | 4-MIC Array (Digital) | Enhanced sensitivity & sound stage |
| Best Pickup Distance | Within 3 Meters | Optimized for counters and kiosks |
| Directivity | ≥ 60° (Default) | Targeted sound zone focus |
| Sensitivity | -26 ± 1 dB | High-precision signal capture |
| SNR (Signal-to-Noise) | 65 dB(A) | Low self-noise for clear audio |
| AOP / Suppression | ≥12 dB SPL (Off-axis) | Eliminates side-interference |
| Noise Reduction (ND) | ≥ 20 dB | Superior performance in noisy halls |
2. Electrical & Interface
| Item | Specification | Note |
| Audio Capture Rate | 16KHz / 48KHz @16bit | Industry-standard for AI engines |
| Interface Type | 1*USB – 4PIN 1.25mm SMT | Horizontal SMT for slim design |
| Supply Voltage | USB 5V ± 5% | Standard USB power |
| Power Consumption | 0.5W (5V, 100mA Max) | Low power consumption |
| Protocol Support | UAC 1.0 | Driver-free on Win/Android/Linux |
Physical Dimensions
Main Control Board: 38mm (L) x 38mm (W)
Microphone Array Board: 53mm (L) x 6mm (W)
Note: The separate design allows for flexible internal cable routing and custom ID integration.
Integrated Algorithm Features
Beam-forming (BF): Real-time tracking of the primary speaker.
Directional Pick-Up (DPUS): Concentrates sensitivity within the designated 60° arc.
Noise Suppression (NS): Intelligent background ambient noise filtering.
Automatic Gain Control (AGC): Balances volume for consistent audio output.
Ideal Application Scenarios
Public Service & Finance: Bank counters, government windows, and hotel reception desks.
Legal & Judicial: Interrogation rooms, prison visitation, and community correction centers.
Smart Terminals: Dual-screen AI translators and interactive self-service kiosks.
Contact & Support
Wuxi Silicon Source Technology Co., Ltd. (SISTC)
15 years of excellence in MEMS microphone design and manufacturing.
Web: www.sistc.com
- Contact Us: info@sistc.com
