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freeware
 FFT Spectrum Analyser (arbitrary waveform function)
This JAVA applet, which works together with JavaScript, allows you to view the FFT spectrum of a specified input signal.
Although it limits the input signal to be described by a combination of mathematical expressions of a few waveforms, you can still have fun seeing the output of the FFT.
preview:
http://www.dsptutor.freeuk.com/jsanalyser/FFTSpectrumAnalyser.html
5/13/2000
Tags: fft
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