How to record in to matlab using two microphones simultaneously?

[sudevschiz]

I’m working on a project to make a sound source locator. My theory is to detect the sound using two microphone located at a known distance and find out the time delay to make out the direction of the sound.
I am using matlab to take input from the microphone.
To take input from two microphones, I used two laptops.
I need the recording to start automatically, so I used Internet time synchronisation in both the laptops and then wrote a code in matlab to start the recording at a specified time.
But the problem is that, the internet time synch is not accurate enough. I need something like millisecond precision.
That’s not happening with internet time synch.
Any solutions to any part of the problem?

[mariadesouza]

This would be an easy problem to solve if the computers can be connected to cables (just record a common sync signal and use that to sync the signals in post-processing)?If not, you need some sort of external hardware.

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