Array Microphone Module / HK-SDXMIC-V1.1
HK-SDXMIC-V1.1
4-Array Dual-Directional Microphone Module
A compact USB microphone array designed for two-way voice interaction. Four digital microphones and onboard algorithms separate left and right speakers, focus on a defined pickup area, and reduce distracting background noise.
Pickup Pattern
Dual 60 degrees Directional
Best Pickup Distance
Within 3 m
Audio Interface
USB Type-C
Why HK-SDXMIC-V1.1
An array microphone platform for smarter conversation terminals.
Rather than adding a conventional microphone to a device, this module gives the product a controlled voice pickup layer. Its four-microphone array and onboard algorithms are designed around the needs of two-way conversational hardware.
Built-in voice intelligence
Four microphones work with voice enhancement, beamforming, directional pickup, noise suppression, and automatic gain control.
Made for two-way interaction
Dual-directional independent pickup and left/right channel separation help reduce crosstalk between two speaking positions.
Ready for compact devices
A small main board, narrow microphone boards, USB audio connectivity, physical volume control, and one-click mute simplify product integration.
Designed for clear two-way interaction
Separate voices. Keep conversations intelligible.
The module combines a four-microphone array with voice enhancement, beamforming, directional pickup, noise suppression, and automatic gain control. It is suited to products that must distinguish two speaking positions without crosstalk.
Independent intercom
Two sets of recordings are partitioned for independent pickup and left/right channel separation.
Controlled pickup zone
A 60 degree directional pattern helps target voices in a specific area at an optimal distance of up to 3 metres.
Physical volume adjustment and one-click mute provide simple on-device control for end users.
1V1 character separation
Capture the speaker you need, not the room around them.
Two independent directional pickup zones allow a terminal to hear people in front of each microphone board while minimizing interference from off-axis speakers and ambient noise.
Application Scenarios
Built for products where two people need to be heard distinctly.
Hotel and service counters
Enable conversational terminals to distinguish customer and staff voices in reception and counter workflows.
Meetings and translation devices
Support role-separated voice pickup in tabletop translators, conference terminals, and other two-way AI interaction devices.
Also suitable for
Government service halls, banks, airport reception, retail service points, interrogation rooms, community correction interview rooms, and voice-collection terminals.
Compact Integration
Small boards, ready for product integration.
The main board measures 38 x 38 mm. Each microphone board measures 53 x 6 mm, letting product teams position the two directional pickup elements around an enclosure or display.
Technical Specifications
HK-SDXMIC-V1.1 specifications
| Microphone type | Dual-directional independent pickup array microphone |
| Digital microphones | 4 microphones |
| Best pickup distance | Within 3 m |
| Audio capture rate | 16 kHz / 48 kHz @ 16-bit |
| Sensitivity | -26 +/- 1 dB |
| Signal-to-noise ratio | 65 dB(A) |
| Acoustic overload point | External voice suppression >= 12 dB SPL |
| Noise reduction | >= 20 dB |
| Directionality | 60 degrees |
| Supporting functions | Voice enhancement, beamforming, directional pickup, noise suppression, automatic gain control |
| Hardware features | USB Audio Class 1.0 (UAC 1.0); pickup-volume adjustment; one-click mute; left/right channel separation |
| Interface | 1 x USB Type-C |
| USB supply voltage | 5 V +/- 5% |
| Power consumption | 0.5 W typical; 5 V, 100 mA maximum |
Product FAQs
Frequently asked questions
What type of product is HK-SDXMIC-V1.1?
HK-SDXMIC-V1.1 is a four-digital-microphone array module for two-way voice interaction. It is designed to separate two speaking positions through dual-directional pickup and left/right channel separation.
What is the recommended pickup distance?
The recommended pickup distance is within 3 metres. The module uses a dual 60-degree directional pattern to focus on voices in its defined pickup zones.
Does the module support USB audio connection?
Yes. HK-SDXMIC-V1.1 uses a USB Type-C interface and supports USB Audio Class 1.0 (UAC 1.0) for audio connectivity.
Which voice-processing functions are included?
The module supports voice enhancement, beamforming, directional pickup, noise suppression, and automatic gain control to improve intelligibility in two-way conversations.
Does it provide physical user controls?
Yes. The hardware supports pickup-volume adjustment and one-click mute, helping product teams provide direct on-device control for end users.
Need a microphone module for a two-way voice product?
Talk with the HAOKAI team about integration, sample availability, and product customization.