The ADC on the arduino is definetely too slow, even if i tamper with the microcontroller. That is the reason i left this method and started using a "trigger".
The idea behind the trigger is that if it is set at a certain level then it should - in theory - trigger at the same wave on both of the microphones(Given that it is a clear cut sound like a sharp bang or a clap). And that I should use this in combination with a high frequency counter circuit and the Arduino to measure the TDOA.
My question being; would the circuit i linked to, set at a certain gate, be a better choice than the one I already have? And would it be possible with this circuit? (Given that analog analysis is out of the question as far as arduino is concerned)