Seeed’s ReSpeaker 4-MicsLinear Array Kit for Raspberry Pi is an extension board, aka HAT designed for Raspberry Pi. It's a linear microphone array kit, comes with four 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 4-Mic Linear Array Kit for Raspberry Pi consists of two boards, one is voice accessory HAT, another is four microphones linear array.

ReSpeaker 4-Mic Linear Array Kit for Raspberry Pi support 8 input & 8 output channels in Raspbian system. The first 6 input channel for microphone recording(only first 4 input channels are valid capture data), rest of 2 input channel are echo channel of playback. The first 2 output channel for playing, rest of 6 output channel are dummy.

Features

2 ADC chips and 1 DAC chip

8 input and 8 output channels

Four microphones array

Grove support

Compatible with Raspberry Pi 40-pin headers

Headset and speaker voice output

Application Ideas

Smart speaker

Intelligent voice assistant systems

Voice recorders

Voice conferencing system

Meeting communicating equipment

Voice interacting robot

Car voice assistant

Other scenarios need voice command

Assembly drawing

Technical Details

Weight	G.W 132g
Battery	Exclude
AD/DA Chips	2 x X-Power AC108 ADC; 1 x X-Power AC101 DAC
Voice Output	3.5mm headset audio jack / Speaker jack (JST 2.0)
Microphones	SPU0414HR5HSB
Sensitivity	-22 dBFS (Omnidirectional)
SNR	59 dB
Raspberry Pi 40-Pin Headers	support Raspberry Pi Zero, Raspberry Pi 1 B+, Pi 2 B, Pi 3 B, Pi 3 B+