How to design a microphone array to find direction of sound source using 4472?

I am trying to implement Labview to find the Time delay of arrival of a single sound source. How can do that using NI 4472 DAQ device?

Hi, nil,
First you can use Measurement & Automation Explore to check your hardware. It will appear in My System -> Devices and Interfaces -> NI-DAQmx Devices. Select 4472, and click Test Panels menu. I'm not sure if your microphones need ICP supply, but I guess most of the array microphones need this. So you need to enable the IEPE, and make sure choosing AC Coupling. Change the Acquisition Mode to Continuous. You can test if your microphones is working well one by one.
You can refer to Hardware Input and Output -> DAQmx -> Analog measurements ->Sound Pressure -> Cont Acq Snd Pressure Samples-Int Clk VI.
If you use more that 8 microphones, you have to use more than one 4472 boards. You need to synchonize the signals received by different boards. A good example is Hardware Input and Output -> DAQmx -> Synchronization -> Multi-Device -> Multi Device Sync-AI-Shared Timebase & Trig-DSA VI.

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