ReSpeaker Lite Voice Assistant Kit Artificial Intelligence Speaker Processing Algorithm Development Board

ReSpeaker Lite Voice Assistant Kit Artificial Intelligence Speaker Processing Algorithm Development Board

Description:
- Powered by XMOS XU316 AI Sound and Audio chipset, this development board excels in audio processing with its integrated dual microphone array, ideal for speech recognition and voice control. Featuring advanced onboard audio front-end algorithms, the XU316 chip provides interference cancellation, echo cancellation, and noise suppression. It supports I2S and USB connections and is compatible with XIAO ESP32S3 (Sense), Adafruit QT Py, Raspberry Pi, and PC.

Features:
- Dual Microphone Array for Far-Field Voice Collection: The 2 high performance digital microphones collect and extract far-field speech and voice (up to 3 meters) even in noisy environments as it cancels point noise using two microphone input.
- Onboard AI ASR Algorithms: Powered by XU-316 AI sound and audio chip for XMOS, the kit includes Natural Language Understanding algorithms for Interference Cancellation (IC) , Acoustic Echo Cancellation, Noise Suppression, Voice-to-Noise Ratio (VNR), and Automatic Gain Control (AGC), enabling high quality voice collection.
- Embracing Open Source: This board is compatible with popular hardware platforms (XIAO ESP32S3 (Sense), Adafruit QT Py) via I2S, and compatible with Raspberry Pi, PC via USB (Audio Class 2.0 (UAC2).
- Onboard RGB LED: the board features a programmable WS2812 RGB LED, supporting custom effects and offering a visual interface for your applications.
- External Power Supply Support: this board supports external 5V power supply, which can be flexibly applied in different scenarios.
- DFU for Custom Development: the board supports custom firmware update via DFU-Util.

Specification:
- Core chip: for XMOS XU316
- Digital microphones: high-performance digital microphones x 2
- Sensitivity: -26dBFS
- Acoustic overload point: 120dBL
- SNR: 64dBA
- Power Supply: USB 5V, external 5V
- Dimensions: 35 x 86mm
- Audio output: speaker connector / 3.5mm headphone jack
- Maximum sampling rate: 16Khz
- Speaker: supports 5W amplifier speakers

Pin Out:
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.

Package Included:
- 1 x AI Voice Assistant Kit