Key Technical Advantages
A. Advanced Acoustic Processing
Next-Gen Processor: Powered by the XMOS XVF3800, delivering superior computational power for real-time AI audio front-end (AFE) processing compared to previous generations.
360° Far-Field Capture: 4 high-performance PDM MEMS microphones in a circular configuration, ensuring crystal-clear voice pickup within a 5-meter radius.
Integrated DSP Suite: Includes Full-Duplex AEC (Acoustic Echo Cancellation), Multi-Beamforming, Dereverberation, DoA detection, DNN-based Noise Suppression, and a 60dB dynamic AGC.
B. Versatile Integration & Control
Dual Operating Modes:
USB Mode (UAC 2.0): Plug-and-play connectivity for PC, Mac, and Raspberry Pi via USB Audio Class 2.0.
I2S Slave Mode (Internal Device): Seamlessly integrates with host MCUs (ESP32, Arduino) as a digital audio peripheral, configurable via I2C.
Hardware-Level Management: Dedicated Mic Mute button with LED indicator and a hardware reset button for reliable system control.
Unique Identity: Each module features a Unique Device Serial Number (SN), essential for large-scale enterprise device tracking and cloud management.
Core Hardware Specifications
| Component | Specification | Functionality |
| Main DSP | XMOS XVF3800 | Handles AFE algorithms (AEC, Beamforming, DNN-NS). |
| Mic Array | 4-Mic Circular PDM MEMS | 360° pickup with high SNR and industrial stability. |
| Audio Codec | TLV320AIC3104 | Manages high-fidelity DAC/ADC and output routing. |
| Audio Output | 3.5mm AUX / JST 5W Amp | Supports headphones (HPLOUT/LOP) or 5W speakers. |
| Control I/O | Type-C / I2S / I2C / GPIO | Comprehensive interfaces for power, data, and logic. |
| Visual Feedback | 12x WS2812 RGB LEDs | Individually addressable for VAD and status effects. |
Development Projects & Implementation
Accelerate your development with our documented ESP32S3 implementation cases:
I2S Protocol Validation: Verifying high-bit-depth audio data integrity between ESP32S3 and XVF3800.
I2C Peripheral Control: Customizing LED ring patterns (colors, brightness, speed) for UI feedback.
Codec Configuration: Mastering the AIC3104 registers via I2C for volume scaling and output path switching.
Full-Duplex Loopback: Real-time 16kHz/32-bit audio record-store-play testing for sync verification.
Logic Mapping: Controlling XVF3800 GPIOs for advanced Mute logic and external Amp management.
MQTT Audio Streaming: Encapsulating captured voice into WAV format for IoT cloud publishing.
Real-Time UDP Streaming: Low-latency raw audio transmission to local servers for processing.
Cloud-to-AI Pipeline: Audio capture stored in PSRAM and uploaded via HTTP for STT engine processing.
Edge AI Inference: Accessing VAD and DoA results directly via I2C for low-power wake-word detection.
Applications
AI Agents & Smart Home: Next-gen smart speakers and voice-enabled control hubs.
Service Robotics: Precise sound source localization (DoA) for human-robot interaction.
Smart Kiosks: Reliable voice recognition in high-noise public environments.
Enterprise Conferencing: High-definition audio pickup for remote communication hardware.
Support & Resources
To maintain the highest quality of service and technical accuracy, we provide full documentation, schematics, and sample code libraries upon request.
How to get started:
Please contact our customer service team or your account manager at www.sistc.com to request the V3800-OMP Technical Resource Package.
