Hi unclebump,
Those examples that I found are only available if you have the LabVIEW Sound and Vibration Toolkit. However, there are several LabVIEW regular examples that involve sound and signal analysis. The location of these VIs are located at C:\Program Files\National Instruments\LabVIEW 7.0\examples\sound. Then if you open the sndExample adv.llb, you will see there is bunch of sound examples. You can also access these examples in LabVIEW by browsing to Help >> Find Examples >> (Switching to Search tab and typing sound). I was looking at the examples Sound Card Simple Spectrum Analyzer and Sound Card AutoSpectrum Analyzer.
The overall picture is that you could use for example the "Snd read waveform" VI, located in the functions palette under Graphics & Sounds -> Sounds. Then once you read the actual sound in the wave file, use the appropriate FFT VI in the signal processing menu (From the functions palette, select Analyze >> Waveform Measurements for FFT VIs). The "Sound Card Simple Spectrum Analyzer" for example, acquires a waveform, windows it, computes the autopower spectrum and the power and frequency of the peak frequency component. The power spectrum is graphed in the desired units.
You also may want to refer to this thread.
Hope this helps!
Best Regards,
Jonathan N.
National Instruments
