HK-DXMIC-V1.1-4 4-array directional pickup microphone module
HK-DXMIC-V1.1-4 is a high-performance 4-array directional microphone module featuring a 60° narrow pickup beam and reliable far-field voice capture up to 3 meters.
Key Highlights
- 60° Directional Beamforming
- 3-Meter Far-Field Voice Pickup
- Embedded AEC / NS / AGC Algorithms
- USB Driver-Free (UAC 1.0)
- Off-Axis Voice Rejection ≥ 12dB
- Dual 4Ω 5W Speaker Amplifier Output
Engineering support
Datasheet available
Technical Overview
Overview & Technical Details
Design, key features, typical applications, and core specifications.
Description
HK-DXMIC-V1.1 is a high-performance 4-array directional pickup microphone module designed for clear voice capture in complex acoustic environments. Featuring a 60° narrow directional pickup angle, an effective 3-meter voice capture range, and an integrated suite of hardware-accelerated audio algorithms, the HK-DXMIC-V1.1 delivers zero-distance audio clarity across remote communication and voice interaction applications.
Key Features
- 60° Directional Beamforming: Concentrates acoustic capture strictly within a 60-degree forward cone, significantly attenuating side environmental noise.
- 3-Meter Clear Pickup Distance: Delivers consistent speech intelligibility within a 3-meter radius for natural, comfortable communication.
- Noise Suppression (NS ≥ 20dB): Filters out steady-state background noise (air conditioners, fans, equipment hums) from 50 cm away, rendering ambient noise virtually inaudible.
- Adaptive Automatic Gain Control (AGC): Dynamically normalizes incoming volume, boosting distant voices and limiting close-up peak speech to maintain a balanced audio output.
- Plug-and-Play USB Integration: Fully compliant with USB Audio Class 1.0 (UAC 1.0) and integrated with a dual 4Ω 5W speaker amplifier for hassle-free smart terminal deployment.
Typical Applications
- Video Conferencing & Huddle Rooms:
- Delivers focused voice capture for table-top or display-mounted conference systems.
- Smart Terminals & Kiosks:
- Enables reliable voice control and interaction in outdoor/indoor self-service digital screens.
- Human-Computer Interaction (HCI):
- Provides clear command recognition for service robots, smart home hubs, and interactive displays.
- Android-Based Hardware:
- Plugs easily into Android media boards, smart TVs, and commercial displays for plug-and-play voice enhancement.
Technical Specifications
| Microphone Array Type | Linear Equidistant Directional Pickup Microphone Array |
|---|---|
| Microphone Quantity | 4 Digital MEMS Microphones |
| Optimal Pickup Distance | Within 3 meters (Far-field) |
| Audio Sampling Rate | 48 kHz @ 16-bit |
| Sensitivity | -26 ± 1 dBFS |
| Signal-to-Noise Ratio (SNR) | 65 dB(A) |
| Off-Axis Voice Suppression | ≥ 12 dB (Suppression outside the pickup beam) |
| Noise Reduction Depth (NS) | ≥ 20 dB |
| Directional Pickup Angle | ≥ 60° (Default Application Beam) |
| Supported DSP Algorithms |
• Acoustic Echo Cancellation (AEC) • Human Speech Enhancement • Directional Beamforming (BF / DPUS) • Noise Suppression (NS) • Automatic Gain Control (AGC) |
| Hardware Features |
• USB Audio Class 1.0 (UAC 1.0) Driver-Free • Integrated Dual 4Ω 5W Speaker Power Amplifier Output • Linear 4-Mic Topology • USB HUB Passthrough Support for Camera Connectivity |
| Connector Interface | 1× USB 5-Pin 1.25mm Vertical SMT Header |
| Power Supply Voltage | 5V DC ± 5% |
| Power Consumption | Standard: 1W (5V, 160mA Max, excluding speaker output) |
| Mainboard Dimensions | 100 mm (L) × 20 mm (W) |
| Mic Array Strip Dimensions | 160 mm (L) × 6 mm (W) |
