SPECIFICATIONS

A versatile 4-mic array for robots and embodied AI applications like smart signage. Separates the core processing board from the microphone array board via a flexible FPC cable, enabling easy integration in space-constrained robotics and embedded applications.
Powered by XMOS XVF3800, it features on-board AI acoustic algorithms for better sound quality. Features AEC, multi-beamforming, de-reverberation, DoA, dynamic noise suppression, AGC, delivering stable and reliable voice capture performance.
With a split design, and 4-mic linear array for 180° directional pickup, come with factory-installed I2S firmware for MCU integration, it supports both dual modes(I2S/USB), making it the smart ear for embodied AI projects requiring far-field and clear voice capture. Support DFU mode for users to switch the firmware.
XIAO ESP32S3 Pre-Soldered: pre-soldered XIAO ESP32S3, enabling native support for ecosystems such as ESPHome and Home Assistant. This allows developers to easily extend applications into smart home scenarios and beyond.
The acoustic ports are positioned on the back side of the mic array board, reducing interference from front-facing components. This design also allows the microphones to be placed closer to the sound source or device surface, maximizing voice pickup performance.

Plug-and-Play via USB: A standard USB interface enables quick connection to devices such as for Raspberry Pi, for for Jetson, and PCs running Windows, Linux, or for macOS, no drivers or complex setup required.
I2S for MCU Integration: Direct I2S support allows seamless integration with MCU platforms like the XIAO Series and Arduino, making it easy to build embedded voice-enabled applications with minimal hardware overhead.

Specification:
Core Chip: XMOS XVF3800
Amplifier: TPA3139D2, Supports 10W Speakers
Audio Algorithms:AEC, AGC, DoA, Beamforming, VAD, Noise Suppression, De-reverberation
USB Interfaces:
1x USB Type-C, For external connection and debugging;
1x USB JST Connector, For internal routing and motherboard integration;
Other Interfaces:
1x XIAO Compatible Pads;
1x XMOS XVF3800 XTAG Debug Pads;
1x XMOS XVF3800 io Pads;
Audio Outputs:
1x 3.5mm Audio Jack;
1x 2-Pin Speaker Connector;
Power Supply:
5V Input: Via USB Type-C or 5V JST Connector;
12V Input: Via 2-Pin Terminal 12V Connector;
Mic Array Interface: 1x 24-Pin FPC Connector
Button: 1x Reset Button; 1x Boot Button;
Maximum Sampling Rate: 16kHz
Pickup Range: Up to 5 meters
Color: Black
Material: PCB

Package Contents:
reSpeaker Flex Core Board x 1
reSpeaker Flex Linear Mic Array Board x 1
FPC Cable x 1

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.