M20-Dual 4-Array Dual Directional Microphone
The HAOKAI M20 is an industrial-grade 4-array dual-directional microphone engineered for precise 1V1 two-party voice capture and AI translation. Powered by advanced MEMS microphone array algorithms, it achieves accurate A/B role voice separation, eliminating audio crosstalk in dual-speaker environments.
Key Highlights
- A/B Role Voice Separation: Dual independent 60° pickup zones for isolated dual-channel audio.
- Far-Field Voice Collection: 2-meter bidirectional pickup / up to 3-meter Adaptive Gain Control (AGC).
- Active Noise Reduction: Built-in DSP delivers ≥20dB background noise suppression.
- Industrial Controls: Flexible metal gooseneck, rotary volume knob, and one-key mute button.
- Plug & Play: Driverless USB Type-C interface (UAC 1.0) compatible with Windows, Linux, and Android.
Overview & Technical Details
Design, key features, typical applications, and core specifications.
Introduction
The M20 4-Array Dual-Directional Microphone features dual 60° targeted pickup angles with 2-meter independent bidirectional voice capture and an extended 3-meter intelligent adaptive pickup range. Equipped with Automatic Gain Control (AGC), the microphone automatically balances volume based on the speaker’s distance and vocal strength, ensuring consistent, high-fidelity audio output in unpredictable soundscapes.
With integrated hardware-level background noise suppression, the M20 4-Array Dual-Directional Microphone effectively filters out ambient acoustic interference (fan noise, hall echo, traffic) while isolating clear human speech. This drastically improves speech recognition accuracy for real-time AI translation, voice logging, and automated transcription systems.
Key Features & Applications
Engineered with an industrial-grade deformable metal gooseneck, a multifunctional rotary volume knob, and a quick-response mute button, the M20 4-Array Dual-Directional Microphone provides seamless physical operation and quick setup for field deployments. Its compact, durable metal chassis allows multiple units to operate in close proximity with zero channel interference.
- Smart Counter & Banking Services: 1V1 teller-customer voice recording and service quality monitoring.
- Government & Judicial Services: Interrogation rooms, legal consultation counters, and community correction centers.
- AI Translation & Digital Humans: Dual-language real-time translation terminals and interactive AI kiosks.
- Hospitality & Front Desks: Hotel reception counters and noise-sensitive check-in terminals.
Specifications
Equipped with 4-mic matrix algorithms including speech enhancement, beamforming, directional pickup, noise suppression, and AGC for 1V1 character separation.
| Microphone type | Dual directional independent pickup array microphone |
| Digital Mic Array | 4 MIC |
| The farthest pick-up distance | Best within 3 meters |
| Audio capture rate | 16KHz/48K @16bit |
| Sensitivity | -26±1dB |
| SNR | 65 dB (A) |
| AOP | Dispatch external voice suppression≥12 dB SPL |
| ND | ≥20dB |
| Directivity | 60° |
| Supporting function | Voice enhanced Beam-forming Noise Suppression Directional pick up sound Automatic Gain Control |
| Hardware characteristics | 60 °directional pick up USB Audio Class 1.0 (UAC 1.0) A button can adjust the volume of the pickup sound and one click mute; Separation of left and right channels |
| Interface | 1*USB – Type-c |
| USB power supply voltage | 5V+5% |
| Power Consumption | Regular work:0.5W 5V, 100mA (Max) |
FAQs
The M20 utilizes a 4-channel MEMS microphone matrix combined with exclusive dual-directional beamforming algorithms. It creates two isolated 60° directional pickup zones on opposite sides. By actively suppressing voices and ambient noise outside these targeted angles, it captures Speaker A and Speaker B into independent audio channels without acoustic crosstalk, making it ideal for 1V1 dialogue recording, speech recognition, and real-time AI translation.
The M20 features a focused 60° directional pickup angle per side. It supports high-definition voice collection up to 2 meters for bidirectional independent pickup and up to 3 meters with intelligent adaptive gain (AGC), ensuring stable and clear audio even when speakers move slightly.
Yes, the M20 supports standard USB Audio Class 1.0 (UAC 1.0) via a USB Type-C interface. It is driverless and natively plug-and-play across major operating systems, including Windows, Linux, Android, and macOS, seamlessly integrating into smart terminals, kiosks, and counter recording systems.
The M20 is built with an industrial-grade metal gooseneck for flexible angle positioning, a multifunctional rotary knob for instant volume adjustment, and a one-touch mute/resume button, allowing effortless manual control during live service counter interactions or interrogation procedures.
