acoustic gain control usb conference speaker

{"cid":"91226353","title":"DSP Noise Reduction Dual Directional 4 Array Usb Conference Mic 3.5mm Audio Output","imgUrl":"https:\/\/img.chinax.com\/nimg\/46\/0b\/3569d35ba53dc47e00f688073bf2-200x200-1.jpg","attrs":{"Price":"USD 8-20 \/ Piece","Brand Name":"HAOKAI","Model Number":"M20","Minimum Order Quantity":"100 Pieces","Delivery Time":"15-25 days after order confirmation","Pickup Distance":"Best within 3m","Storage Temperature":"-20 to +70 Degree C","Sensitivity":"-26 +\/- 1dB","Directivity":"Greater than or equal to 60 degrees (dual directional)","Working Temperature":"-10 to +60 Degree C","Main Board Size":"38mm x 38mm","Audio Algorithms":"Voice Enhancement, Beam-forming, Directional Pickup, Noise Suppression, AGC","Supply Ability":"10000 Pieces per Month","Off-angle Voice Suppression":"Greater than or equal to 12dB SPL","Interface":"1 x USB Type-C + 3.5mm headphone \/ audio output","Mic Board Size":"53mm x 6mm","Payment Terms":"T\/T,PayPal,Western Union","Place of Origin":"Shenzhen, Guangdong, China","Packaging Details":"Anti-static bag with export-grade carton packaging, OEM\/ODM packaging available","Microphone Type":"Dual Directional Independent Pickup Array, 4 MIC","Applications":"Service Counter A\/B Role Separation, Translation Booth, Meeting Room, Large Display Terminal, Smart Kiosk","Audio Protocol":"USB Audio Class 1.0 (UAC1.0)","SNR":"65dB(A)","Power":"USB 5V +\/- 5%, 0.5W (5V, 100mA max)","Certification":"CE, FCC, RoHS","Noise Reduction":"Greater than or equal to 20dB","Hardware Features":"Adjustable pickup volume, one-key mute, single interface output","Audio Capture Rate":"16kHz \/ 48kHz @ 16bit"}}

{"cid":"91200288","title":"Auto tracking cameras motion tracking camera video conferencing equipment wireless speaker supplier from China","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/77\/4149eac1f11ab9f2cfa02b8ac058-200x200-1.jpg","attrs":{"Price":"100","Brand Name":"HAWKVINE","Model Number":"VC008","Minimum Order Quantity":"10PCS","Delivery Time":"15days","Certification":"TS16949","Place of Origin":"CHINA","Payment Terms":"L\/C, T\/T","Supply Ability":"1000 Per month","Packaging Details":"Carton Packing","Hawkvine NO.":"HV-VC008"}}

{"cid":"91201324","title":"VINCAN NLP88-AEC 4-Channel AEC Audio DSP Processor with USB Audio and Automatic Mixing for Conference Rooms","imgUrl":"https:\/\/img.chinax.com\/nimg\/45\/c4\/714982f5aadf8a93602905269e90-200x200-1.jpg","attrs":{"Price":"negotiate","Brand Name":"VINCAN","Model Number":"NLP88-AEC","Minimum Order Quantity":"1 pcs","Delivery Time":"2-3 work days","Packaging Details":"carton package","Additional Functions":"USB sound card, camera tracking, real-time saving and centralized control","Payment Terms":"T\/T","Series":"NLP Special Series","Audio Processing Functions":"AEC, AFC, ANS, AGC and AMM","Supply Ability":"100 pcs per week","Model":"NLP88-AEC","Certification":"FCC CE Rohs","Independent AEC Channels":"4","Processor":"ADI SHARC 21489, 450 MHz SIMD","Place of Origin":"China Mainland"}}

{"cid":"91159203","title":"Poly Sync 40+ USB-A, USB-C & Bluetooth Smart Speakerphone - 218765-01, 772C5AA","imgUrl":"https:\/\/img.chinax.com\/nimg\/5a\/e4\/f33d5816bb1a2dd95a061aa5e331-200x200-1.jpg","attrs":{"Brand Name":"POLY","Model Number":"SYNC40+","Minimum Order Quantity":"1","Delivery Time":"2-3 days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T","Product Name":"Conference Phone","Part Number":"SYNC40+","Shipment":"DHL","Condition":"New","Lead Time":"2-3 days","Warranty":"1 year","Keywords":"SYNC40+"}}