Seeed’s ReSpeaker 6-Mic Circular Array Kit is an extension board, aka HAT designed for Raspberry Pi. It's a circular microphone array kit, comes with six microphones and designed for AI and voice applications. That means you can build a more powerful and flexible voice product with Raspberry Pi which can integrate Amazon Alexa Voice Service, Google Assistant, and so on.

ReSpeaker 6-Mic Circular Array Kit for Raspberry Pi consists of two boards, one is voice accessory HAT, another is six microphones circular array.

ReSpeaker 6-Mic Circular Array Kit for Raspberry Pi support 8 input & 8 output channels in Raspbian system. The first 6 input channel for microphone recording,rest of 2 input channel are echo channel of playback. The first 2 output channel for playing, rest of 6 output channel are dummy.

Technicial Specifications:

• 8 Input and 8 Output channels
  
• 6 pcs circular microphone (MSM321A3729H9CP)
  
• Sensitivity -22 dBFS (versatile)
  
• 2 ADC (AC108) chip and 1 DAC (AC101) chip
  
• Compatible with Grove
  
• Compatible with Raspberry Pi 40-pin
  
• Supports 3.5mm headphone and speaker audio output.
  
• SNR (Signal to Noise Ratio) 59 dB
  
• Compatible with Raspberry Pi cards with 40 Pin Headera.
  
• Application using with Raspberry Pi.

Package Included:

• 1 x ReSpeaker Voice Accessory HAT
• 1 x ReSpeaker 6-Mic Circular Array for Voice Accessory HAT
• 1 x Ribbon Cable