Description
Note: The ReSpeaker Lite Voice Assistant Kit comes with the XIAO ESP32S3 already soldered on. If you‘d love to purchase the ReSpeaker Lite dev board without the XIAO ESP32S3, please visit:ReSpeaker Lite
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 as it cancells point noise using two microphone input.
- Onboard AI NLU Algorithms: Powered by XMOS XU-316 AI sound and audio chip, the kit includes Natural Language Understanding algorithms for Interference Cancellation (IC), Acoustic Echo Cancellation, Noise Suppression, and Automatic Gain Control (AGC), enabling high quality voice capture.
- Embracing Open Source: It’s compatible with Arduino, PlatformIO, MicroPython, CircuitPython for furthur developement.
- Compatible with Popular Voice Assistants: This kit allows you to build your own natural language processor and connect it to Home Assitant via ESPHome, Amazon Alexa Voice Service, Google Assistant, or Cloud Speech-to-Text service, enabling you to ask questions and issue voice commands to your programs.
- Onboard RGB LED: The kit features a programmable WS2812 RGB LED, supporting custom effects and offering a visual interface for your applications.
Specification
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 |
16Khz |
|
Speaker |
Supports 5W Amplifier Speakers. |
|
Processor |
ESP32-S3R8 |
|
Xtensa LX7 dual-core, 32-bit processor running up to 240 MHz |
|
|
Wireless |
Complete 2.4GHz WiFi subsystem |
|
BLE: Bluetooth 5.0, Bluetooth mesh |
|
|
On-chip Memory |
8M PSRAM & 8MB Flash |
|
Interface |
1x UART, 1x IIC, 1x IIS, 1x SPI,11x GPIO(PWM), 9x ADC, 1x User LED, 1x Charge LED |
|
1x Reset button, 1x Boot button |
|
|
Dimensions |
21 x 17.5mm |
|
Power |
Input voltage (Type-C): 5V Input voltage (BAT): 4.2V |
|
Circuit operating voltage (ready to operate). – Type-C: 5V@19mA – BAT: 3.8V@22mA |
|
|
Charging battery current: 100mA |
|
|
Low Power Consumption Model (Supply Power: 3.8V) |
Modem-sleep Model: ~ 25 mA Light-sleep Model: ~ 2mA Deep Sleep Model: ~ 14 μA |
|
WiFi Enabled Power Consumption |
Active Model: ~ 100 mA |
|
BLE Enabled Power Consumption |
Active Model: ~ 85 mA |
|
Working Temperature |
-40°C ~ 65°C |
Hardware overview
Hardware Flowchart
Hardware Diagrams
|
1 |
Dual Microphone Array |
Provides high-quality audio input. |
|
2 |
Power Indicator Light |
Illuminates when powered on. |
|
3 |
RGB Light |
Programmable WS2812, provides visual feedback. |
|
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 |
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. |
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-Bsed Remote Control Cars
- Keywords Spotting and Wake up
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