reSpeaker Flex XVF3800 - audio module with XMOS XVF3800 processor and microphone array - Seeed Studio 100005504

Description

reSpeaker Flex XVF3800 Circular-4 is an advanced microphone array module designed for applications in robotics, embedded systems, and interactive HMI devices. The device is based on the XMOS XVF3800 processor, which delivers high-quality real-time audio signal processing. Thanks to built-in AI algorithms such as noise suppression (NS), echo cancellation (AEC), and beamforming, the module significantly enhances captured audio quality. The split-design construction, separating the processing unit from the microphone array, allows flexible placement of components in robotic projects and space-constrained devices.

This version supports integration with XIAO ESP32S3 (not included), enabling direct compatibility with MCU ecosystems such as Arduino and ESPHome, which simplifies rapid deployment of voice-based projects. Support for USB and I2S modes ensures wide compatibility with computers, Raspberry Pi, NVIDIA Jetson, and microcontrollers. The 4-microphone array enables precise sound capture within a 360° range, making it ideal for applications such as information kiosks or control panels.

The system offers a voice capture range of up to 5 meters, allowing convenient voice control in larger spaces without the need to be close to the device. Thanks to DoA (Direction of Arrival) technology, it is possible to determine the direction of the sound source, improving interaction precision in robotics and AI systems. The module is designed for professional applications, offering high resistance to interference and stable operation even in challenging acoustic environments. Built-in interfaces and DFU support enable easy firmware updates and device customization. The reSpeaker Flex XVF3800 Circular-4 is a comprehensive solution for projects requiring advanced voice recognition and processing.

Features

• Main chipset: XMOS XVF3800
• Amplifier: Texas Instruments TPA3139D2, supports speakers up to 10 W
• Audio algorithms: AEC, AGC, DoA, beamforming, VAD, noise suppression, de-reverberation
• Interfaces:
  • USB Type-C (external connection and debugging)
  • USB JST connector (internal signal routing and motherboard integration)
  • XIAO-compatible pins (XIAO not included)
  • XMOS XVF3800 XTAG debug pins
  • XMOS XVF3800 I/O pins
• Audio outputs: 1× 3.5 mm audio jack, 1× 2-pin speaker connector
• Power supply: 5 V via USB Type-C or 5 V via JST connector; 12 V input via 2-pin terminal connector
• Microphone array interface: 1× 24-pin FPC connector
• Buttons: 1× reset button, 1× boot button
• Maximum sampling rate: 16 kHz
• Microphones: 4× high-performance MEMS PDM microphones
• Array topology: circular microphone array with 44 mm spacing
• Directional characteristic: 360°
• Voice capture range: up to 5 meters
• Mounting: 3× M3 mounting holes

Kit contains

• reSpeaker Flex Core module
• reSpeaker Flex Circular Mic Array module
• 20 cm FPC cable
• Connector