ReSpeaker Lite Voice Assistant Kit
USB Dual Microphone Array with XIAO ESP32S3
Powered by XMOS XU316 AI Sound and Audio chipset, it is a high-performance open source voice assistant development kit. The kit integrates the reSpeaker Lite dual-microphone array and a powerful XIAO ESP32S3 processor, offering exceptional voice recognition, noise reduction, and voice processing capabilities thanks to its onboard AI NLU algorithms. This kit provides firmware integration with Home Assistant via ESPHome, making it ideal for smart voice assistants and home automation applications.
Features
| Pre-Soldered ESP32 Controller | A powerful XIAO ESP32S3 is pre-soldered via the I2S pins, offering a solderless experience for further development and integration. |
| Dual Microphone Array for Far-Field Voice Capture | The 2 high-performance digital microphones capture and extract far-field speech and voice (up to 3 meters), even in noisy environments, cancelling point noise using two-microphone input. |
| Onboard Audio Front-End Algorithms | Powered by the XMOS XU-316 AI sound and audio chip, featuring Natural Language Understanding algorithms for Interference Cancellation (IC), Acoustic Echo Cancellation (AEC), Noise Suppression, and Automatic Gain Control (AGC) for high-quality voice capture. |
| Embracing Open Source | Compatible with Arduino, PlatformIO, MicroPython, and CircuitPython for further development. |
| Compatible with Popular Voice Assistants | Enables building a natural language processor and connecting it to Home Assistant via ESPHome, Amazon Alexa Voice Service, Google Assistant, or Cloud Speech-to-Text, allowing voice interaction and commands. |
| Onboard RGB LED | Features a programmable WS2812 RGB LED supporting custom effects and providing a visual interface for applications. |
Specifications
| General | |
| 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 | 16 kHz |
| Speaker | Supports 5W Amplifier Speakers |
| XIAO ESP32S3 | |
| Processor | ESP32-S3R8, Xtensa LX7 dual-core, 32-bit @ 240 MHz |
| Wireless | 2.4GHz WiFi, Bluetooth 5.0, BLE Mesh |
| On-chip Memory | 8MB PSRAM & 8MB Flash |
| Interface | 1× UART, 1× IIC, 1× IIS, 1× SPI, 11× GPIO(PWM), 9× ADC, User LED, Charge LED, Reset Button, Boot Button |
| Dimensions | 21 × 17.5 mm |
| Power | Type-C Input: 5V BAT Input: 4.2V Operating Current: • Type-C: 5V @ 19mA • Battery: 3.8V @ 22mA Charging Current: 100mA |
| Low Power Consumption | (Supply: 3.8V) • Modem-sleep: ~25 mA • Light-sleep: ~2 mA • Deep-sleep: ~14 µA |
| WiFi Enabled Power | Active Mode: ~100 mA |
| BLE Enabled Power | Active Mode: ~85 mA |
| Working Temperature | -40°C ~ 65°C |
Hardware Flowchart
Hardware Diagram
Pinout Diagram of XIAO ESP32S3
Application
| Smart Speakers and Virtual Assistants: Work with Amazon Alexa and Google Assistant to improve voice command recognition. |
| Audio Processing Development: Suitable for projects involving audio signal processing and analysis. |
| Conference Systems: Ensures clear communication during video and audio conferences. |
| Voice-Based Remote Control Cars |
| Keyword Spotting and Wake-Up |
Documents
Part List
ReSpeaker Lite Voice Assistant Kit x1
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Custom Requirements?
Discussion Forum
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