Raspberry Pi 3 For Respeaker 4-Mic Array For Raspberry Pi 4 Microphones Array For AI Voice Quad-Microphone Expansion Board

Raspberry Pi Intelligent Voice Module ReSpeaker 4 Microphone 3m Far Field AI Recognition Array Expansion Board Different from ReSpeaker 2-Mics Pi HAT, this board is developed based on AC108, a highly integrated quad-channel ADC with I2S/TDM output transition for high definition voice capture. Besides, this 4-Mics version provides a super cool LED ring, which contains 12 APA102 programmable LEDs. With that 4 microphones and the LED ring, Raspberry Pi would have the ability to do VAD(Voice Activity Detection), estimate DOA(Direction of Arrival), and show the direction via LED ring, just like Amazon Echo or Google Home. Technical detailsDimensions:65mm x65mm x9mmWeight:G.W 38gBattery:ExcludeMIC:4 analog microphonesLED:12 APA102 programable RGB LEDs, connected to SPI interfaceRaspberry Pi 40-Pin Headers:support Raspberry Pi Zero, Raspberry Pi 1 B+, Pi 2 B, Pi 3 B, Pi 3 B+AC108:highly integrated quad-channel ADC with I2S/TDM output transitionSoftware Algorithm:VAD(Voice Activity Detection), DOA(Direction of Arrival) and KWS(Keyword Search)Grove:2 Grove InterfacesVoice Capture Distance:3 meters radius voice capture Package Included:1*Array Expansion Board