The new ReSpeaker USB microphone array series from Seeed Studio leverages the XMOS VocalFusion® XVF3800 processor to bring cutting-edge AI voice interaction to developers worldwide.
This powerful, plug-and-play solution provides developers, system designers, and integrators with everything they need to add clear, intelligent voice interfaces to their products — even in challenging noisy environments.
Meet the XVF3800 – the heart of voice innovation
At the core of the ReSpeaker series lies the XMOS XVF3800, a high-performance voice processor built on the XMOS xcore.ai edge-intelligent architecture.
Smarter, clearer capture:
Sophisticated audio processing ensures crystal-clear input, even in noisy or harsh conditions.
Built-in intelligence:
Features include acoustic echo cancellation (AEC), beamforming, de-reverberation, Direction of Arrival (DoA) detection, dynamic noise suppression, voice activity detection (VAD), and 60 dB automatic gain control (AGC).
Flexibility by design:
The open firmware architecture allows developers to customise, optimise, and adapt the processor to their unique requirements.
Integration made easy:
With a full set of standard interfaces, designers can quickly configure systems, connect to other hardware, and expand their solutions without friction.
The ReSpeaker family – power, flexibility, and simplicity
Seeed Studio’s ReSpeaker series, built on the XVF3800, offers three models to suit different applications:
- ReSpeaker XVF3800 bare board – for maximum design flexibility.
- ReSpeaker XVF3800 with acoustic housing – a plug-and-play device for immediate use.
- ReSpeaker XVF3800 with Seeed Studio XIAO ESP32S3 – integrating wireless connectivity for even broader applications.
Each model delivers 360° far-field voice pickup (up to 5 metres) and works seamlessly across a wide range of environments, making them ideal for everything from consumer electronics to industrial deployments.
Key Features at a Glance
- Core chip: XMOS XVF3800
- Microphone array: 4 high-performance digital microphones
- Audio quality: –36 dB FS sensitivity, 130 dBSPL acoustic overload point, 69 dBA SNR
- Power supply: USB or 5V external connector
- Audio output: Speaker connector / 3.5 mm headphone jack
- Max sampling rate: 16 kHz
- Speaker support: 5 W amplifier speaker
- Compact design: Slim PCB layout for easy integration into space-constrained devices
- Plug-and-play: Standard USB interface for Windows, Linux, macOS, Raspberry Pi, NVIDIA Jetson and more
- MCU integration: Direct I2S interface for Arduino, XIAO series, and other MCU platforms
Real-world applications
The ReSpeaker XVF3800 series is designed to unlock new opportunities across a variety of industries and applications:
- Smart voice assistants – Seamless integration with Amazon Alexa, Google Assistant, Home Assistant, and more.
- Conference systems – Compatible with Microsoft Teams, Zoom, and popular conferencing software via USB Audio Class 2.0.
- Audio R&D – Perfect for developers working on speech recognition, signal processing, or acoustic algorithms.
- Robotics and IoT – Bringing 360° voice control and localisation to robots, smart toys, and connected devices.
- Industrial control – Delivering reliable performance in noisy, complex environments such as factories and retail spaces.
Resources for developers
It’s easy to get started:
- Learn more about the XVF3800 voice processor
- Step-by-step tutorials and application guides
- Explore the full ReSpeaker XVF3800 product line
✨ With XMOS VocalFusion® XVF3800 and Seeed Studio ReSpeaker, adding natural, reliable voice interfaces to your products has never been easier.
