1. Core High-End Features
180° Panoramic Frontal Pickup
Total Coverage: Unlike narrow-beam mics, this module covers a full 180° horizontal arc. Whether the speaker is at the far left or far right of the podium/desk, the voice remains consistent and clear.
Rear Noise Shielding: Automatically suppresses ambient noise and reflections originating from behind the device (e.g., cooling fans or wall echoes).
Advanced Hardware AEC (Acoustic Echo Cancellation)
Full-Duplex Communication: Enables natural, simultaneous two-way conversation. Even when the device speakers are at maximum volume, the AEC algorithm identifies and subtracts the speaker’s audio from the microphone stream in real-time.
Echo-Free AI Interaction: Ensures that AI voice assistants (like ChatGPT-integrated systems) are not “re-triggered” by their own voice playback.
AI-Powered Noise Suppression (30dB+)
Deep Learning Integration: Filters out steady-state and non-stationary noises (air conditioning, shuffling papers, background chatter) while focusing on the target human voice.
Far-Field Voice Capture: Stable and high-accuracy pickup from a distance of 3 to 5 meters, optimized for classroom and huddle room acoustics.
2. Technical Specifications
| Category | Specification |
| Model | GYKH-2M-F180-AEC |
| Pickup Pattern | 180° Frontal Semi-Sphere (Beamforming) |
| Echo Cancellation | Full-Duplex AEC (Hardware-Level) |
| Noise Reduction | AI-Based Noise Suppression (up to 30dB) |
| Working Distance | 3 – 5 Meters (Optimal for STT Accuracy) |
| Interface | USB 2.0 (Standard UAC 1.0) / OTG / I2S |
| Audio Format | 16kHz / 48kHz (16-bit PCM) |
| DSP Core | High-performance 32-bit RISC with Integrated FPU |
| Signal-to-Noise Ratio | ≥ 64dB (Customizable up to 70dB) |
3. Why Choose the 180° AEC Solution?
Vs. Standard 360° Mics: Standard mics pick up unwanted reflections from the wall behind the screen. Our 180° solution focuses only on the interaction zone, significantly improving Speech-to-Text (STT) accuracy.
The “Howling” Solution: In devices where mics and speakers are close together (like tablets or AIO PCs), feedback “howling” is a common failure. Our integrated AEC engine creates an “Acoustic Shield” between the output and input, allowing for louder speaker volumes without distortion.
4. Target Application Scenarios
Smart Education Interactive Whiteboards: Perfect for teachers moving across the front of the classroom.
Enterprise Huddle Rooms: Captures every participant around the table with 180° coverage.
AI Kiosks & Digital Humans: Ensures the AI can “hear” the user over its own high-volume voice responses.
Home Smart Displays: Allows for hands-free video calls with clear audio from anywhere in the living room.
