SISTC V3800-OMP: Enterprise-Grade Open-Source Voice Interface Platform

Key Technical Advantages

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.

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.

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.

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.

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.

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.