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ReSpeaker has released its 4-Microphone Raspberry Pi HAT (Hardware Attached on Top), a quad-microphone expansion board for Raspberry Pi which has been designed for AI assistant and voice applications.
This board will enable you to build your own voice interaction application, or create your own AI assistant. The board can be used in robotics or in smart homes, IoT scenarios, and conference rooms, and is customisable as you add new modules.
ReSpeaker
The board has been developed based on AC108, an integrated quad-channel ADC (Analog to Digital Converter) with I2S/TDM (Time Division Multiplexing) output transition which will give a high definition voice capture.
The four microphone version also comes with an LED ring, which will flash in the direction of your voice.
This HAT has four analog microphones and 12 APA 102 programmable RGB LEDs in a ring. When this is connected, the Raspberry Pi will have the ability to do Voice Activity Detection (VAD).