Basic Info.
Certification
RoHS, CCC, ISO
Microphone Type
Dual-Directional Independent Pickup Array Micropho
Number of Digital Wheat
4mic Array
The Farthest Pick-up Distance
3 Meters
Audio Capture Rate
48kHz @16bit
Transport Package
Carton Box
Product Description
Dual Independent Directional USB Microphone Array - HK-SDXMIC-V1.1
Overview
The HK-SDXMIC-V1.1 is a high-performance, compact 4-microphone array module engineered for dual-channel directional voice pickup in controlled environments. Leveraging advanced beamforming, noise suppression, and automatic gain control (AGC), this USB-powered mic delivers crystal-clear, role-separated audio-ideal for legal, financial, governmental, and service-oriented applications where voice clarity, privacy, and speaker isolation are non-negotiable.
Key Features
Dual Independent Directional Pickup
Simultaneously captures two speakers from opposite directions with ≥60° focused pickup zones, while actively suppressing off-angle voices by ≥12 dB SPL-perfect for 1V1 interviews, counter services, or interrogation rooms.
Advanced Audio Processing Algorithms
Integrated DSP includes:
- Beamforming (BF) for spatial voice focusing
- Noise Suppression (NS) - reduces ambient noise by ≥20 dB
- Automatic Gain Control (AGC) for consistent volume
- Voice Enhancement to boost speech intelligibility
Professional-Grade Audio Quality
- Sampling Rate: 48kHz @ 16-bit
- Sensitivity: -26 ±1 dB
- Signal-to-Noise Ratio: 65 dB(A)
- Optimal Pickup Distance: up to 3 meters
Plug-and-Play USB Audio (UAC 1.0 Compliant)
No drivers needed! Works instantly with Windows, Linux, Android, and embedded systems via standard USB 2.0 interface.
All-in-One Design with Speaker Output
Built-in dual 4Ω/5W amplifier supports external speaker playback-enabling full duplex communication in kiosks or recording stations.
Robust & Compact for OEM Integration
- Mainboard Size: 38mm × 38mm
- Mic Board Size: 17mm × 6mm
- Low Power: 0.5W (5V / 110mA max)
- Industrial reliability: tested for -10°C to 60°C operation, humidity, drop, and ESD.
Ideal Applications
- Government Service Counters
- Bank & Hotel Reception Desks
- Prison & Community Correction Interview Rooms
- Interrogation & Legal Evidence Recording
- Translation Booths & Language Labs
- Smart Kiosks & Self-Service Terminals
- OEM Voice Capture Systems
What's Included
- HK-SDXMIC-V1.1 Microphone Array Module
- USB 4-pin (1.25mm pitch) connector
- Technical Datasheet & Integration Guide
OEM/ODM Support Available - Customize firmware, housing, or acoustic design for your specific deployment.
Acoustic & Mechanical Optimization
- Sealed Mic Cavity: Prevents internal sound reflection and echo
- Vibration Isolation: Mic and speaker zones are acoustically decoupled (recommended ≥50cm separation)
- Directional Shielding: Ensures only target voices are recorded-enhancing data security and transcription accuracy
1. Support Independent intercom function
2. Role separation technology
3. No crosstalk in multiple calls
4.Targeting voices in a specific area
5.Suppress background noise
Product Overview:
USB 2.0 interface;
4-array microphone;
≥60° directional pickup;
Dual directional independent pickup;
Applicable Scenarios: Government service halls, 1V1 role separation scenarios,
Hotels, banks, interrogation rooms, prisons, counter services, voice collection, community corrections interview rooms, translation machines, and various conversation application scenarios;
The array microphone board incorporates a 4-channel microphone matrix algorithm, including algorithms for voice enhancement, beamforming, directional pickup, noise suppression, and automatic gain control. It enables bidirectional independent directional pickup and blocks human voices outside the pickup angle, perfectly meeting the pickup requirements of devices in 1v1 role-splitting scenarios.
Microphone type | Dual-directional independent pickup array microphone |
Number of digital wheat | 4MIC Array micrpphone board |
The farthest pick-up distance | 3 meters is better |
Audio capture rate | 48KHz @16bit |
Sensitivity | -26±1dB |
SNR | 65 dB(A) |
| AOP | External vocal suppression ≥12 dB SPL |
| ND (Noise Reduction) | ≥20dB |
| Directivity | ≥ 60° |
| ≥ 60° directional microphone pickup
Supports USB Audio Class 1.0 (UAC 1.0)
Supports speaker amplifier output (dual 4Ω 5W)
4-channel matrix microphone array
Supports single-interface output |
supporting function | The sound of man is enhanced
Beam-forming
Directional pick up sound
Noise Suppression
Automatic Gain Control TBD dB |
| Algorithm features | Dual-directional independent pickup
Beamforming (BF)
DPUS (Directional Pickup)
Noise Suppression (NS)
Automatic Gain Control (AGC) |
| Connect the interface | 1*USB - 4PIN 1.25mm horizontal mount |
| Regular work :0.5W 5V, 110mA(Max) |
USB power supply voltage | 5V±5% |
| 38*38mm |
| 17*6mm |
Belle Liu
Address:
3floor East Tower Industry Building Xinwu Viliage Longzhu Road, Xili, Shenzhen, Guangdong, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics
Company Introduction:
SHENZHEN GAONA ELECTRONIC CO. Ltd, established in 2005, which has been 11 years of development history so far. After years of development and innovation, we have own independent brands: EENA. Our products have been verified by electronic testing center and CE, FCC, RoHS and other international certification.
Currently we mainly produce surveillance devices such as PCB main board (CVI/TVI/AHD/SDI), CCTV cameras like infrared night vision cameras, array cameras, waterproof cameras, box cameras, anti-explosion cameras and dome cameras, also hard disk video recorder as HD SDI-DVR, AHD-DVR etc.
