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.
Core 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 Resources
Design approach, key features, typical applications and core parameters.
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
How does the M20 dual-directional microphone achieve A/B role voice separation?+
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.
What is the effective pickup range and angle of the M20 microphone?+
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.
+
Is the M20 plug-and-play? Which operating systems and interfaces are supported?+
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.
What physical controls and hardware features are built into the M20?+
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.
