🎙️✨ This is a smart voice assistant development kit that packs powerful voice processing 🧠 and crystal-clear audio playback 🔊 into one sleek setup!
🧩 The kit includes:
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🛠️ ReSpeaker Lite (choose between the 2-Mic Array or the version with XIAO ESP32S3 pre-soldered)
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📦 Mono Enclosed Speaker for rich sound output
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🧱 Laser-cut acrylic enclosure that’s easy to assemble and perfect for showcasing your build
🏡 Whether you're crafting your own voice assistant 🤖 or diving into home automation projects 🏠, this kit is designed to get you started fast and smart!
Features
🎤 Far-Field Voice Capture with Dual Microphones Two high-performance digital mics 🎙️ capture clear speech from up to 3 meters away—even in noisy environments 🌪️. Thanks to dual-input noise cancellation, your voice stays front and center.
🧠 Onboard AI-Powered ASR Algorithms Driven by the XMOS XU-316 AI audio chip ⚡, the kit features advanced Automatic Speech Recognition (ASR) algorithms:
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🛡️ Interference Cancellation (IC)
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🔊 Acoustic Echo Cancellation
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🤫 Noise Suppression
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📈 Voice-to-Noise Ratio (VNR)
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🎚️ Automatic Gain Control (AGC) All working together for crisp, reliable voice input.
💡 Open Source Friendly ReSpeaker Lite plays well with:
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🍓 Raspberry Pi
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💻 PC via USB (UAC2)
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🧠 XIAO ESP32S3 (Sense)
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🧩 Adafruit QT Py via I2S Perfect for makers, hackers, and smart home builders!
🔊 High-Quality Audio Output Includes a Mono Enclosed Speaker (4Ω 5W) 🔈 for loud, clear playback—ideal for voice feedback and alerts.
🖤 Laser-Cut Acrylic Acoustic Enclosure Matte black, sleek, and acoustically tuned 🧱. This DIY-friendly enclosure adds both style and performance to your build.
🏠 Smart Home Integration Ready Supports voice assistants like:
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🏡 Home Assistant (via ESPHome)
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🗣️ Amazon Alexa
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🧠 Google Assistant Control your home with just your voice!
🛠️ Flexible Development Environment Compatible with:
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🧪 Arduino
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⚙️ PlatformIO
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🐍 MicroPython
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🐍 CircuitPython Build, test, and deploy your ideas with ease!
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 |
| 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 & Virtual Assistants Seamlessly integrates with Amazon Alexa 🗣️ and Google Assistant 🤖 to enhance voice command recognition and responsiveness.
🎧 Audio Processing Development Ideal for projects involving audio signal analysis, filtering, and real-time processing 🔍—from voice enhancement to acoustic modeling.
💼 Conference Systems Ensures crystal-clear communication 💬 during video and audio calls, even in challenging acoustic environments.
🚗 Voice-Controlled Remote Cars Enable hands-free control of RC vehicles using voice commands 🎙️—perfect for smart robotics and STEM projects.
🗝️ Keyword Spotting & Wake-Up Detection Supports hotword detection 🔓 and wake-up triggers for voice-first interfaces and low-power applications.
🏠 Voice Control for Home Assistant Compatible with Home Assistant 🏡 via ESPHome, enabling intuitive voice-based smart home automation.
Documents
Part List
| Must choose one | ReSpeaker Lite with XIAO ESP32S3 | 1 |
| ReSpeaker Lite | 1 | |
| Optional | Mono Enclosed Speaker - 4R 5W | 1 |
| Optional | Acrylic Enclosure for ReSpeaker Lite | 1 |