Acoustic phase Measurements

[dcibel]

For capturing accurate timing/phase, any standard XLR mic and 2 channel audio interface should be preferred over a USB mic solution. Timing reference is easily captured just with a loopback connection on the other channel of the interface, all you need is a short patch cable. It avoids the need to set up an acoustic reference, and keeps a constant timing reference for all measurements, so phase information includes complete time of flight from speaker to mic. Easy peasy.