acoustic source localization digital teaching board

{"cid":"91201763","title":"All In One 12ms Interactive Digital Display Board 65\" Wallboard Digital Signage","imgUrl":"https:\/\/img.chinax.com\/nimg\/81\/c7\/c333af675f867da1a33846928902-200x200-1.jpg","attrs":{"Price":"USD470","Brand Name":"IDP","Model Number":"ID651AWT","Minimum Order Quantity":"1-100PCS","Delivery Time":"7-8 works","Certification":"CE,Rohs,FCC,CCC,etc","Place of Origin":"China","Payment Terms":"L\/C, T\/T","Supply Ability":"100PCS\/15days","Packaging Details":"standard export package","Type":"Whiteboard","Whiteboard type":"Interactive Whiteboard","Resolution":"3840X2160","Color":"Black(other colors optional )","Warranty":"12 Months","Touch points":"10 Points","Brightness":"500cd\/m2","Cpu":"Intel Core i3 (i5 i7 optional)","Response time":"12ms","Viewing angle":"178\u00b0(H) \/ 178\u00b0(V)","Size":"65\"","Product name":"All-in-one PC interactive digital wall"}}

{"cid":"91222842","title":"110 inch LCD board smart Interactive Flat Panel smart board for classroom","imgUrl":"https:\/\/img.chinax.com\/nimg\/07\/9b\/61431745041c6485ed7921d081ef-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"ZXTLCD","Model Number":"ZXTLCD-IFP1100NIC","Minimum Order Quantity":"1","Delivery Time":"3-5 working days","Certification":"CE\/Rohs\/FCC","Place of Origin":"Guangdong, China","Payment Terms":"L\/C,T\/T,MoneyGram,Western Union","Supply Ability":"2000 pcs per month","Packaging Details":"wooden case, carton, flight cases are optional","Screen Size":"110 inch","Resolution":"3840*2160 , 4K","Brightness":"350cd\/m\u00b2","View Angle":"178\u00b0\/178\u00b0 (H\/V)","Color":"16.7M","Response time":"8 ms","Fresh Frequency":"60 Hz","Surface Glass (Optional)":"Fingerprint-resistant, protective glass with anti-glare surface","Touch Technology":"Infrared touch screen","Touch Points":"20points","Audio system":"Built-in 15 W X 2 Speakers","Language":"3000 : 1","Built-in wifi":"150Mbps 802.11n wifi integate","OS":"Android 13.0","CPU":"Quad-core ARM Cortex-A55\uff0c1.9GHz","GPU":"Mali-G52 MP2(2EE)","RAM":"4G","SSD":"32G","Power Supply":"AC 100~240V, 50hz-60hz","Front interface":"HDMI*1\uff0cTouch USB*1\uff0cUSB*3\uff0cType-C*1","Rear interface":"RJ45*1 ,AV IN*2, AV OUT*1\uff0cUSB3.0*1, USB2.0*1, RS232*1, HDMI IN*1, TOUCH USB*1, Earphone*1,SPDIF*1","CAM + MIC\uff08optional\uff09":"Built-in 48MP camera + 8 array MIC on the top","OPS Slot":"Available","Max power consumption":"\u2264880W\u3010OPS not included\u3011","Standby":"\u22640.5W","Protype":"Floor standing \/wall mounted(Optional)"}}