You could build your own using a seeed studio respeaker and raspberry pi however if you aren't comfortable with custom development of hardware and software it would be a challenge. https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-Raspberry-Pi.html
You could build your own using a seeed studio respeaker and raspberry pi however if you aren't comfortable with custom development of hardware and software it would be a challenge. https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-Raspberry-Pi.html