Multiple microphones in a system

Is there a value to connect 16 microphones in a system
        – is there a simple way of connecting these 16 microphones to the system
        – what requirements would be needed to fulfill the use case?

Always on for voice recogniziton is becomming popular. It is a tough use case as voice recognition requires to be accurately recognize a voice amongst a crowd  of people and react on the right voice. This could requrie to add more microphones. How to connect those microphones easy to the main chipset and what are the requirements for this.

Other considerations are: standby current (while being always on)