Philip Orr Posted November 15, 2008 Report Share Posted November 15, 2008 Hello! I am using LabVIEW Real-Time to analyse samples from a measurement system. The analysis is quite simplistic: FFT on a window of the samples, extract the 50 Hz signal from the FFT array, perform some work with these values (magnitude and phase both required). My problem is that by using the FFT to give me the phasor for the 50 hz signal in the input data, I am generating lots of useless data (the data for all frequencies not 50 Hz) and thus my programme is not exactly efficient... Could someone tell me a smarter, quicker, way to get just the 50 Hz component's information, and not bother having to get all the others. I heard somewhere that correlation with a 50 Hz sinusoid would yield something like this, but I'm not sure really. Any advice appreciated - Thanks. Quote Link to comment
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