Analysis and Mathematics: LabVIEW Player Demonstrations

From this page you can link to a number of LabVIEW demos: All of these demos require that you have the LabVIEW player installed. Click here to install the free LabVIEW player.

The following links don’t have detailed explanations, but can still be fun to explore on your own.

Echo Detector: This detects the envelope of a damped exponential signal in a simulated acoustic environment. Since the first echo comes back to the measuring microphone at a time when the signal is passing through the zero crossing, it is very difficult to see the effect of the echo. However, the envelope of the signal (computed using the Hilbert transform) clearly and precisely identifies the echo.

Vibration: This simulates a car which is set to run at a user-defined speed. The vibration spectrum of the car is then shown. The example also shows how LabVIEW can be used for servo control. The user defines a set-point and the program drives the car speed to that value.

Finite Element Modeling of a beam: See how the wave patterns change when you change the applied force.

Tomography: Highlights the 3D graphics capabilities of LabVIEW.

Statistics:

• General LS: Explore Least square curve fitting
• Noise Statistics: See the histogram and statistical parameters of noise
• Non linear LevMar Exponential Fit: An here's some more curve fitting
• Statistical Solver: Computes basic statistical parameters on and between two records.
• Regression

Spectrum analysis and Fourier Transforms

• 2D FFT: Yes, LabVIEW can also do two-dimensional Fourier Transforms!
• Multi-tone: Generate 3 tones of arbitrary frequency, amplitude, and phase. See the resulting time domain plot and the spectrum.
• Frequency Analysis of a Filter Design: Interactively see the Frequency Response of a filter.
• FM Modulated Signals A simple sine or square wave generator is modulated by the frequency of your choice.
• Joint Time Frequency Analysis (JTFA)
• Nyquist Plot of a filter: Interactively play with the filter type and coefficients
• On line Noise removal: Use a Bessel low pass filter to remove noise from a sine wave.
• Power Spectrum

Shows different averaging techniques. See how synchronous averaging removes noise.

• Window Comparison: Generate two tones of desired frequency and amplitude, and see how the various windows weigting functions affect you ability to find the tones in the frequency spectrum.

Math:

• Linear Algebra: Solve Matrixes
• Formula Waveform: Write any formula and see the corresponding waveform.

Test

• Limit Testing: Look to see if a square wave lies within test limits as you add noise.
• Limit Test of Filter: Interactively "tune" a filter to get it to lie within test tolerances.

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