Multifunction DAQ

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double buffering system

I am building an application which mimics software defined radio.  The hardware I am using is NIRFSA and I am acquiring continuous I and Q samples (i.e In phase and Quad Phase). I want to process those samples to FFT as sets of 4096. So I want to implement a double buffering system where the samples acquired (i.e First 4096) are stored in first buffer. During processing of this 4096 point FFT, The samples coming from the NIRFSA have to be stored in second buffer and the process should continue to and fro from first to second buffer.

I dont know where to start please help me with examples. I am using Labview 8.5




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