ReSpeaker Lite Voice Assistant Kit

  • 89.42 USD

It is a smart voice assistant development kit that integrates high-performance voice processing and audio playback capabilities. The kit includes a Re

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It is a smart voice assistant development kit that integrates high-performance voice processing and audio playback capabilities. The kit includes a ReSpeaker Lite (the 2-Mic Array or the 2-Mic Array with XIAO ESP32S2 soldered on), a Mono Enclosed Speaker, and an assembleable laser-cut acrylic enclosure, specifically designed for build your smart voice assistants and home automation applications.
  • 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 ASR Algorithms: Powered by XMOS XU-316 AI sound and audio chip, the kit includes Automatic Speech Recognition 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：The ReSpeaker Lite is compatible with Raspberry Pi, PC via USB (Audio Class 2.0 (UAC2)). It‘s also compatible with popular hardware platforms of XIAO ESP32S3 (Sense), Adafruit QT Py via I2S.
  • High-Quality Audio Output: Equipped with a Mono Enclosed Speaker - 4R 5W, providing clear and loud audio output, enhancing the user experience.
  • Acrylic Acousitc Enclosure: We offer a matte black acrylic enclosure, laser-cut with an acoustic design. This DIY assembly enclosure not only provides fun but also enhances audio performance.
  • Smart Home Integration: Supports integration with voice assistants like Home Assistant via ESPHome, Amazon Alexa, and Google Assistant, enabling smart home control.
  • Open Source Compatibility: Compatible with Arduino, PlatformIO, MicroPython, and CircuitPython, offering a flexible development environment.


Specification

General

Digital Microphones

High-Performance Digital Microphones * 2

Sensitivity

-26 dBFS

Acoustic Overload Point

120 dBL

SNR

64 dBA

Far-Field Voice Capture

Up to 3m

Audio Output

Speaker Connector / 3.5mm Headphone Jack

Power Supply

USB 5V, External 5V

Dimensions

Length: 92mm  Width: 42mm  Height: 95mm

Weight

200 g

Audio Processing Chip

Model

XMOS XU316

Maximum Sampling Rate

16Khz

Automatic Speech Recognition Algorithms

NLU, IC, AEC, NS, VNR, AGC

Processor (Optional) XIAO ESP32S3

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

Speaker

Model

Mono Enclosed Speaker

Rated Input Power

at 5.0W

Rated Impedance

4ohm±15%

Output S.P.L

88±3dB

Distortion

10% Max

Enclosure

Model

Acrylic Enclosure for ReSpeaker Lite

Material

Acrylic

Color

Matte Black

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 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

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

  • 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
  • Voice Control for Home Assistant

Documents

Acrylic Enclosure for ReSpeaker Lite.dxf

Assembly instructions for Acrylic Enclosure

Product-Brief of XMOS XU316

ReSpeaker Lite - CE certifications

ReSpeaker Lite - FCC certifications

ReSpeaker Lite Voice Assistant Kit with XIAO ESP32S3 - CE certifications

ReSpeaker Lite Voice Assistant Kit with XIAO ESP32S3 - FCC certifications

Schematic diagram of ReSpeaker Lite

Part List

Must choose one

ReSpeaker Lite with XIAO ESP32S3

1

ReSpeaker Lite

1

Optional

Mono Enclosed Speaker - 4R 5W not included 

1

Optional

Acrylic Enclosure for ReSpeaker Lite not included