The LDP6218 AI-powered omnidirectional far-field microphone array module is designed for accurate human voice capture in complex acoustic environments.
Featuring an 8-channel omnidirectional microphone array, advanced AI noise reduction, acoustic echo cancellation (AEC), and automatic gain control (AGC), LDP6218 delivers clear and stable voice pickup from 0 to 10 meters, making it ideal for conference systems, smart devices, and AI-enabled terminals.

Key Features

• AI Intelligent Noise Reduction
  Deep neural network (DNN) algorithm with adaptive noise suppression depth of ≥35 dB.

• Far-Field Voice Pickup
  Omnidirectional clear voice capture from 0 to 10 meters.

• Acoustic Echo Cancellation (AEC)
  Effectively suppresses echo and feedback for natural two-way communication.

• Compact & Easy Integration
  Slim module design suitable for embedded and space-constrained products.

• Multiple Audio Interfaces
  Supports driver-free USB Audio Device and analog audio interfaces.

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Technical Specifications

Electrical & Acoustic

• Supply Voltage: 3.7 – 5 V

• Microphone Array: 8-channel analog microphone array

• Microphone Sensitivity: –36 dB

• SNR: 65 dB

• Noise Reduction Depth: ≥35 dB (AI adaptive)

AI Algorithms

• DNN-based human voice recognition

• Acoustic Echo Cancellation (AEC)

• Automatic Gain Control (AGC)

Audio Performance

• Pickup Distance: Omnidirectional, 0–10 m

• Communication: Full-duplex

• Speaker Amplifier: Built-in 3–5 W Class-D amplifier

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Interfaces

Audio Output

• USB Audio Device (driver-free)

• Analog Line-Out

• Analog Mic-Out

• On-board Class-D speaker output (3–5 W)

Audio & Control Input

• 4-channel auxiliary analog microphone inputs

• 4-channel main analog microphone inputs

• Digital microphone array input

• Echo cancellation reference input

• Expansion GPIO (digital I/O)

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System Compatibility

• Operating Systems: Windows / Android / Linux

• Software Support:

  • PC recording software

  • WeChat, DingTalk

  • Skype, Zoom and other conferencing platforms

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Mechanical Dimensions

Main Board

• Compact: 90 × 15 × 5 mm

• Extended: 100 × 20 × 5 mm

Microphone Board

• 115 × 6 × 4.2 mm

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Operating Conditions

• Operating Temperature: –20 °C to +75 °C

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Applications

• Conference microphones and soundbars

• All-in-one meeting devices

• Conference cameras

• Intercom systems

• Service robots

• AI-enabled smart terminals