Powered by XMOS XU316 AI Sound & Audio Chipset, this dev board is a powerhouse for audio processing . Equipped with a dual microphone array, it's perfect for speech recognition and voice control . Featuring advanced onboard NLU algorithms, the XU316 delivers: Interference cancellation Echo cancellation Noise suppression Supports both I2S and USB connections, and is fully compatible with: Seeed Studio XIAO ESP32S3 (Sense) Adafruit QT Py Raspberry Pi PC Features Dual Microphone Array for Far-Field Voice Capture Capture clear voice input from up to 3 meters away—even in noisy environments! The two high-performance digital mics work together to cancel point noise and isolate speech with precision. Advanced Onboard Audio Algorithms Powered by the XMOS XU-316 AI Sound & Audio Chip, this board features built-in Natural Language Understanding (NLU) algorithms for: Interference Cancellation (IC) Acoustic Echo Cancellation Noise Suppression Voice-to-Noise Ratio (VNR) Automatic Gain Control (AGC) All designed to deliver crisp, high-quality voice capture. Open Source & Hardware Compatibility Seamlessly integrates with: XIAO ESP32S3 (Sense) Adafruit QT Py via I2S Raspberry Pi & PC via USB Audio Class 2.0 (UAC2) Onboard RGB LED Includes a programmable WS2812 RGB LED—perfect for custom lighting effects and visual feedback in your applications. Flexible Power Options Supports external 5V power supply, making it adaptable for diverse deployment scenarios. DFU for Custom Firmware Development Ready for developers: update firmware via DFU-Util for tailored functionality and rapid iteration. Specification Core Chip XMOS XU316 Digital Microphones High-performance digital microphones * 2 Sensitivity -26 dBFS Acoustic Overload Point 120 dBL SNR 64 dBA Power Supply USB 5V, external 5V Dimensions 35*86 mm Audio Output Speaker Connector / 3.5mm Headphone jack Maximum Sampling Rate 16Khz Speaker Supports 5W amplifier speakers. Hardware Overview 1 Dual Microphone Array Provides high-quality audio input. 2 Power Indicator Light Illuminates when powered on. 3 RGB Light Programmable WS2812, provides visual interface 4 Mute Indicator Light Lights up red when the mute button is pressed. 5 USR Button User-defined button. 6 Mute Button Mutes audio input when pressed. 7 XIAO ESP32S3 (optional) For further development and integration. 8 XU316 Core Processor Responsible for audio processing and transmission. 9 External Power Supply Solder Pad Supports external 5V power supply. 10 USB Type-C Port Used for power and data transmission. 11 Speaker Connector For audio output. Supports 5W amplifier speakers. 12 3.5mm Headphone jack Output audio, We can plug active speakers or Headphones into this port. 13 External power pad 1 Unused IO pins on the XIAO ESP32. 14 External power pad 2 Unused IO pins on the XU316. 15 JTAG For debugging and programming the XU316. Application Far-Field Voice Control Offline Voice Processing Local Command Processing Custom Wake-Up Words Low Power Voice Offload Industrial Voice Control Voice Recognition and Control for Home Assistant, Google Assistant, Amazon Alexa and more Documents Product-Brief of XMOS XU316 ReSpeaker Lite - CE certifications ReSpeaker Lite - FCC certifications Schematic diagram of ReSpeaker Lite
