10981
EXPLORE
LATEST
ABOUT
AUTHORING AREA
PARTICIPATE
Your browser does not support JavaScript or it may be disabled!
Frequency Spectrum of a Noisy Signal
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
THINGS TO TRY
Slider Zoom
SNAPSHOTS
RELATED LINKS
Discrete Fourier Transform
(
Wolfram
MathWorld
)
Fast Fourier Transform
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Frequency Spectrum of a Noisy Signal
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/FrequencySpectrumOfANoisySignal/
Contributed by:
Jon McLoone
Share:
Embed Interactive Demonstration
New!
Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site.
More details »
Download Demonstration as CDF »
Download Author Code »
(preview »)
Files require
Wolfram
CDF Player
or
Mathematica
.
Related Demonstrations
More by Author
Beat Frequency of Sound Waves
Christopher Engberg
Kaiser Window Transform
Jeff Bryant
Fitting Noisy Data
Rob Morris
Correlation and Covariance of Random Discrete Signals
Daniel de Souza Carvalho
Power Content of Frequency Modulation and Phase Modulation
Nasser M. Abbasi
Data Smoothing
Jon McLoone
Sounds of Waveforms
Marilyn F. Bishop (Virginia Commonwealth University, Department of Physics and Center for the Study of Biological Complexity, Richmond, Virginia)
Estimating a Centered Ornstein-Uhlenbeck Process under Measurement Errors
Didier A. Girard
Complex and Real Planes of Discrete Fourier Transforms
Daniel de Souza Carvalho
Pulse Width Modulation Principle
Harley H. Hartman
Related Topics
Approximation Methods
Astronomy
Audio
Data Analysis
Data Compression
Discrete Mathematics
Electrical Engineering
Experimental Methods
Physics
Signal Processing
Statistics
Browse all topics
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have
Mathematica Player
or
Mathematica 7+