Name: ReSpeaker Lite - USB 2-Mic Array with Onboard AI NLU Algorithms, compatible with Seeed Studio XIAO ESP32S3 (Sense), Raspberry Pi, Adafruit QT Py
SKU: 523929

Product Details ＋

Note: ReSpeaker Lite does not come with a MCU for data access and transmission (eg. a XIAO ESP32S3), and it is only for audio processing with XMOS's XU316. If you want to buy a complete Voice Assistant Kit, please visit:

Features

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 cancels 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, Voice-to-Noise Ratio (VNR), and Automatic Gain Control (AGC), enabling high quality voice capture.
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	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	(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