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DSP Noise Reduction Dual Directional 4 Array Usb Conference Mic 3.5mm Audio Output

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Hans Hi Technology (Shenzhen) Co., Ltd.

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DSP Noise Reduction Dual Directional 4 Array Usb Conference Mic 3.5mm Audio Output

MOQ : 100 Pieces

Pickup Distance : Best within 3m

Storage Temperature : -20 to +70 Degree C

Sensitivity : -26 +/- 1dB

Directivity : Greater than or equal to 60 degrees (dual directional)

Working Temperature : -10 to +60 Degree C

Main Board Size : 38mm x 38mm

Audio Algorithms : Voice Enhancement, Beam-forming, Directional Pickup, Noise Suppression, AGC

Supply Ability : 10000 Pieces per Month

Off-angle Voice Suppression : Greater than or equal to 12dB SPL

Interface : 1 x USB Type-C + 3.5mm headphone / audio output

Mic Board Size : 53mm x 6mm

Payment Terms : T/T,PayPal,Western Union

Brand Name : HAOKAI

Place of Origin : Shenzhen, Guangdong, China

Packaging Details : Anti-static bag with export-grade carton packaging, OEM/ODM packaging available

Microphone Type : Dual Directional Independent Pickup Array, 4 MIC

Applications : Service Counter A/B Role Separation, Translation Booth, Meeting Room, Large Display Terminal, Smart Kiosk

Price : USD 8-20 / Piece

Audio Protocol : USB Audio Class 1.0 (UAC1.0)

SNR : 65dB(A)

Power : USB 5V +/- 5%, 0.5W (5V, 100mA max)

Certification : CE, FCC, RoHS

Noise Reduction : Greater than or equal to 20dB

Hardware Features : Adjustable pickup volume, one-key mute, single interface output

Delivery Time : 15-25 days after order confirmation

Audio Capture Rate : 16kHz / 48kHz @ 16bit

Model Number : M20

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M20 Dual Directional 4-Mic Array Microphone Module

The M20 from HAOKAI is a dual-directional independent pickup microphone module built on a 4-mic matrix array with DSP beam-forming, noise suppression and automatic gain control. It separates two speakers (A/B roles) on independent directional channels and outputs audio through both USB Type-C and 3.5mm analog interfaces - ideal for embedding into service counters, translation booths, meeting room systems, large display terminals and smart kiosks.

Key Features

Dual Independent Directional Pickup: ≥60° bidirectional directivity separates A/B speakers for clear 1-on-1 dialogue capture while blocking off-angle voices by ≥12dB SPL.
4-Mic Matrix with DSP Algorithms: Beam-forming, voice enhancement, directional pickup, noise suppression (≥20dB) and AGC deliver broadcast-grade clarity.
USB + 3.5mm Analog Dual Output: Flexible integration - digital USB Audio Class 1.0 and analog headphone/audio output from the same compact module.
Hardware Controls: Physical pickup volume adjustment and one-key mute for instant operator control.
Ultra-Compact Board Design: Main board only 38mm x 38mm with a 53mm x 6mm mic board - fits easily inside terminals and displays.
Low Power USB Powered: 5V supply with 0.5W (100mA max) regular consumption.
Clear Voice within 3m: 48kHz/16bit capture, 65dB(A) SNR, -26±1dB sensitivity.
Proven Reliability: Temperature cycling, 100cm drop, vibration and ±8KV ESD tested.

Technical Specifications

Item	Specification
Microphone Type	Dual directional independent pickup array, 4 MIC
Pick-up Distance	Best within 3m
Audio Capture Rate	16kHz / 48kHz @ 16bit
Protocol	USB Audio Class 1.0 (UAC1.0)
Sensitivity	-26 ±1dB
SNR	65dB(A)
Off-angle Voice Suppression	≥12dB SPL
Noise Reduction	≥20dB
Directivity	≥60° (default)
Algorithms	Voice Enhancement, Beam-forming, Directional Pickup, Noise Suppression, AGC
Interface	1 x USB Type-C + 3.5mm headphone/audio output
Power	USB 5V ±5%, 0.5W (5V, 100mA max)
Main Board Size	38mm x 38mm
Mic Board Size	53mm x 6mm
Working Temperature	-10 to +60°C
Storage Temperature	-20 to +70°C

Applications

Government service counters • Counter A/B role voice separation • AI translation booths • Hotel and bank reception • Meeting rooms • Large display terminal voice interaction • Smart kiosks and self-service terminals

Integration & OEM Service

As a board-level module, the M20 is engineered for fast integration into terminals, kiosks and display devices. HAOKAI offers OEM/ODM support including cable, connector, acoustic tuning and firmware customization. Contact us for samples, datasheets and volume pricing.

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