Frequency Spectrum of a Noisy Signal
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This Demonstration generates a sine wave signal with random noise. You can visualize a plot of the signal's amplitude or its frequency spectrum. The frequency spectrum is calculated using the discrete Fourier transform of sampled amplitude values.
Contributed by: Jon McLoone (March 2011)
Open content licensed under CC BY-NC-SA
"Frequency Spectrum of a Noisy Signal"
Wolfram Demonstrations Project
Published: March 7 2011