Features:

• The ReSpeaker 4-Mic Array is a quad-microphone expansion board for Raspberry Pi designed for AI and voice applications.
• With the ReSpeaker, you will be able to build a more powerful and flexible voice project with your Raspberry Pi that integrates Amazon Alexa Voice Service, Google Assistant, and more!
• The ReSpeaker is developed based on the AC108 IC, a highly integrated quad-channel ADC with I2S/TDM output transition for high definition voice capture.
• This HAT is also equipped with LED ring, which contains 12 APA102 programmable LEDs.
• 4x Analog Microphones
• 3x Meter Radius Voice Capture
• 2x Grove Interfaces
• 12x APA102 Programable RGB LEDs (connected via SPI interface)
• Software Algorithm: VAD (Voice Activity Detection), DOA (Direction of Arrival), and KWS (Keyword Search)
• Raspberry Pi compatible (Support for Raspberry Pi Zero and Zero W, Raspberry Pi B+, Raspberry Pi 2 B, and Raspberry Pi 3 B)
• Dimensions: 65mm x 65mm x 9mm