The ReSpeaker 4-MicsLinear Array Kit for Raspberry Pi is an extension board, (HAT) designed for Raspberry Pi. It's a linear microphone array kit which comes with four microphones designed for AI and voice applications. This means you can build a more powerful and flexible voice projects which can integrate Amazon Alexa Voice Service, Google Assistant, and more with your Raspberry Pi.

This ReSpeaker 4-Mic Linear Array Kit for Raspberry Pi consists of two boards, one is voice accessory HAT, the other is four microphones in a linear array.

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

Some applications this array is great for include:

• 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

• Sensitivity: -22 dBFS (Omnidirectional)
• SNR: 59dB
• 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

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