{"product_id":"respeaker-flex-xvf3800-circular-4-ai-mic-array-for-robotics-and-embodied-ai","title":"reSpeaker Flex XVF3800 Circular-4 | AI Mic Array for Robotics and Embodied AI","description":"\u003cp\u003e\u003cimg style=\"display: block; margin-left: auto; margin-right: auto;\" height=\"1200\" width=\"848\" alt=\"\" src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/reSpeaker_Flex_1_.png\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 1: Innovative Modular Split Design\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eSeparates the core processing board from the microphone array board via a flexible FPC cable, enabling easy integration in space-constrained robotics and embedded applications.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eFor use cases such as desktop or humanoid robots, the mic array board can be positioned near the sound source, while the core board can be placed elsewhere inside the device. This design helps minimize interference from internal motor and servo noise, resulting in improved voice capture performance.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg height=\"553\" width=\"1302\" alt=\"\" src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/circular.jpg\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 2: Flexible Array Configurations\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eAvailable in two standard configurations: 4-mic circular array for 360° spatial pickup, and 4-mic linear array for 180° directional pickup.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; height: 137.216px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 58.8068px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 12px; text-align: center; height: 58.8068px;\"\u003e\n\u003cstrong\u003eRobotics\u003c\/strong\u003e\u003cbr\u003eIn robotics applications, the circular array can be mounted on the robot’s head for omnidirectional voice capture.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.4091px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(204, 204, 204); padding: 12px; text-align: center; height: 78.4091px;\"\u003e\n\u003cstrong\u003eSmart Digital Signage\u003c\/strong\u003e\u003cbr\u003eFor smart digital signage, the linear array is well-suited for front-facing placement, optimizing voice pickup for typical user interactions directly in front of the display.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/figuration.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 3: XMOS XVF3800 for Advanced AI Audio Processing\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eon-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.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eAEC (Acoustic Echo Cancellation)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eAEC removes acoustic echo caused when sound played from the system is picked up again by the microphone array. AEC is critical in full-duplex communication systems such as conferencing devices, voice assistants, and interactive systems.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ciframe width=\"943\" height=\"539\" src=\"https:\/\/www.youtube.com\/embed\/tDNBpNKloHU\" title=\"reSpeaker Flex Performs AEC and Wake Word Detection\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eNS (Noise Suppression)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eNS reduces unwanted background noise from captured audio. By identifying and attenuating non-speech components, such as fan noise, motor and servo noise, ambient chatter, keyboard typing, or environmental hum, NS enhances the SNR (signal-to-noise ratio) in real time.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eNS is essential in voice interactive systems including smart home and industrial voice control, voice assistants, educational devices, smart interactive terminals, and robots.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ciframe width=\"943\" height=\"539\" src=\"https:\/\/www.youtube.com\/embed\/TQp_8AGE5YA\" title=\"Noise Suppression Test on reSpeaker Flex\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 4: Powerful Far-Field Voice Capture\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eWith far-field voice capture up to 5 meters and the circular 4-microphone array (100005504, 100070894) supporting precise Direction of Arrival (DoA) detection, the reSpeaker Flex delivers reliable voice capture and accurate sound source localization for interactive and voice-driven applications.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eFar-field Voice Capture Up to 5m\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThis enables clear command recognition in larger spaces without requiring users to stand close to the device, making the reSpeaker Flex ideal for voice interactive setups like smart digital signage.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ciframe width=\"943\" height=\"539\" src=\"https:\/\/www.youtube.com\/embed\/46SeIbCuRg0\" title=\"reSpeaker Flex Performs Far-field Voice Pickup and Wake Word Detection\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCircular 4-Microphone Array Supports 360° DoA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThe circular 4-mic array enables accurate 360° DoA detection, allowing the reSpeaker Flex to identify where a voice is coming from. This spatial awareness enhances interaction performance, supports speaker tracking, provides a strong foundation for advanced beamforming, and allows users to interact with the robot from anywhere around it.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 5: Compact Design for Embedded Applications\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eBottom-Firing Microphones\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eThe 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.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/design.png\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCompact Size, Powerful Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eWith just 44 mm mic spacing and a diameter of 73 mm for the circular array, and 33 mm spacing with a length of 110 mm for the linear array, the design fits easily into space-constrained embedded applications. Despite its compact size, it delivers outstanding voice capture performance, achieved through the combination of optimized hardware design and acoustic tuning.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/file_1.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eFeature 6: Developer-Friendly Integration\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003eThe reSpeaker Flex with no XIAO versions (100005504, 100099135) come with factory-installed USB firmware.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003ePlug-and-Play via USB:\u003c\/strong\u003e A standard USB interface enables quick connection to devices such as Raspberry Pi, NVIDIA Jetson, and PCs running Windows, Linux, or macOS, no drivers or complex setup required.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eI2S for MCU Integration:\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/media-cdn.seeedstudio.com\/media\/wysiwyg\/111-photo\/xiao_comparison.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecification\u003c\/h2\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCore Board\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; height: 509.438px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e\u003cstrong\u003eCore Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003eXMOS XVF3800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e\u003cstrong\u003eAmplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003eTexas Instruments TPA3139D2, Supports 10W Speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 39.1875px;\"\u003e\u003cstrong\u003eAudio Algorithms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 39.1875px;\"\u003eAEC, AGC, DoA, Beamforming, VAD, Noise Suppression, De-reverberation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.375px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 78.375px;\"\u003e\u003cstrong\u003eUSB Interfaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 78.375px;\"\u003e1x USB Type-C, For external connection and debugging;\u003cbr\u003e\u003cbr\u003e1x USB JST Connector, For internal routing and motherboard integration;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 97.9688px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 97.9688px;\"\u003e\u003cstrong\u003eOther Interfaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 97.9688px;\"\u003e1x XIAO Compatible Pads;\u003cbr\u003e\u003cbr\u003e1x XMOS XVF3800 XTAG Debug Pads;\u003cbr\u003e\u003cbr\u003e1x XMOS XVF3800 IO Pads;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e\u003cstrong\u003eAudio Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e1x 3.5mm Audio Jack;\u003cbr\u003e\u003cbr\u003e1x 2-Pin Speaker Connector;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e5V Input: Via USB Type-C or 5V JST Connector;\u003cbr\u003e\u003cbr\u003e12V Input: Via 2-Pin Terminal 12V Connector;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e\u003cstrong\u003eMic Array Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 19.5938px;\"\u003e1x 24-Pin FPC Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e\u003cstrong\u003eButton\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 58.7812px;\"\u003e1x Reset Button;\u003cbr\u003e\u003cbr\u003e1x Boot Button;\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 39.1875px;\"\u003e\u003cstrong\u003eMaximum Sampling Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center; height: 39.1875px;\"\u003e16kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eMic Array Board\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eMicrophone\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e4x High-performance PDM MEMS microphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eArray Topology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e44 mm spacing arranged Circular Mic Array\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003ePickup Pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e360° omnidirectional audio capture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003ePickup Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; text-align: center;\"\u003eUp to 5 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e1x 24-Pin FPC connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(217, 217, 217); padding: 12px; text-align: center;\"\u003e3 × M3 mounting holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e","brand":"ThinkRobotics.com","offers":[{"title":"Linear-4","offer_id":51809653096765,"sku":"null","price":0.0,"currency_code":"INR","in_stock":false},{"title":"Circular-4","offer_id":51809653129533,"sku":"null","price":0.0,"currency_code":"INR","in_stock":false}],"url":"https:\/\/thinkrobotics.com\/products\/respeaker-flex-xvf3800-circular-4-ai-mic-array-for-robotics-and-embodied-ai","provider":"ThinkRobotics.com","version":"1.0","type":"link"}