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*** FFT PROPERTIES 3.5 README **************
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Real time spectrum-network analyzer with build in signal generator and filter offers an easy and quick way to learn about the properties of FFT and to gain the fundamental insight in to digital signal processing and analysis. The application also offers extensive capabilities for quick analysis of real world signals. It features  parametric windows, peak interpolation, rich set of peak marking features, wavelets decomposition, higher order spectral analysis, cross and auto correlation, cepstral analysis, cross spectral analysis, FIR filter designer, decimation and interpolation.

* Version: 3.5
* Windows 95/98/NT
* 3000 KB disk space.
* Memory: 16MB minimum, 32MB recommended
* Sound card
* To install unzip and run setup.
* This is shareware.(on-line registration support)
* Distribution is free
* Author's Email: janez.makovsek@usa.net.
* Technical support: Free (24h response).
* Home page: www.teemach.com/FFTProp
* Released: August 1999.

Distribution:

USA: 		RegSoft: www.regsoft.com.
SPAIN:		TeeMach: www.teemach.com
SLOVENIA: 	

Company:MA.JA
Tel/Fax:+386 62 819 634, 
Author:	Janez Makovsek
Address:Ulica Pohorskega bataljona 22, 2317 Oplotnica, Slovenija, Europe
Email:	Janez.Makovsek@usa.net
WWW:    www.teemach.com/FFTProp


FFT Properties version 3.5 features:

1. Real time record and play monitoring.
2. CPU load indiciator.
3. User definable screen update frequency.
4. Double precision allows phase angle measurement with 0.000001 degree accuracy.
5. Auto and single trigger.
6. Trigger on peak, border pass, (post/pre trigger).
7. Trigger channel can be different from data channel.
8. Bode plots: Amplitude - Frequency, Phase - frequency.
9. Peak hold averaging.
10. Write on trigger.
11. User definable sine sweep speed.
12. On-line wavelet analysis.

FFT Properties version 3.01 features:

1. Peak filtering
2. SNR, SFDR, SINAD, Noise-floor.
3. accurate measurement of the phase angle of non-periodic signals.

FFT Properties version 3.0 features:

1. Real spectrum
2. Imaginary spectrum
3. Cross-correlation
4. Auto-correlation
5 .Discrete cosine trasform
6. Real cepstrum
7. Cross spectrum
8. Transfer function
9. Coherence.
10. Total harmonic distortion % and Noise %
11. Two new text files.
12. Reads windows PCM  (*.wav) support.
13. Signal overlapping. (samples and %).
14. Hilbert transformer generator and filtering
15. Kaiser parametric window
16. Chebyshev parametric window
17. Zero padder.
19. Higher order spectra: Bispectra and Bicoherence
20. Periodogram.
21. RMS, Mean, Crest, Peak, StDev - Time charts.
22. Peak Amplitude, Phase, frequency - time charts.
23. Wavelets decomposition.
24. Multirate Decimation/Interpolation.
25. Chart cloning.
26. Parametric printing (down/across) (sequential /mulitplexed) of files.
27. Automatic detection of multiplicative components (sidebands and modes)
28. Automatic marking of harmonic components.
29. Interpolation of marked peaks achieving up to 500 times better frequency estimation
+/- 0.1 phase degree estimation, and 1000 times better amplitude estimation then with standard 
FFT resolution and considerably better time-frequency resolution (obsoletes Cohens general type of time-frequency distributions).
30. Traces peaks: current or largest.
31. Automatically finds largest peaks.
32. Prints while tracing peaks.
33. Each chart can save: marks, picture, values.
34. Fully configurable marks (color, shape, size...)
35. Single line bispectra/bicoherence analysis.
36. Real time emulator.
37. Last used file list.
38. Drag and drop file capabiliy.]
39. Intel Pentium, Pentium II and Pentium III optimized.

Version 2.5 features:

1. Multichanneling. (8 parallel channels.)
2. FIR filter with Designer and speed profiler.
3. Multi-series charts with legend. 
4. A new product support: The basic Delphi signal processing package. The package mirrors the main features of FFT Properties with three Delphi components.

FFT Properties 2.0 features

1. Two displays: Time signal, Frequency Spectrum.
2. Power Spectrum
3. RMS Spectrum
4. Phase Spectrum
5. Three input signals support.
6. Separate adjustment of DC, Phase, Frequency and Amplitude.
7. Real time emulation. (Smooth animation)
8. Log/Lin Scale.
9. Static/Dynamic Scale.
10. Single/dual screen display.
11. Import of signals from files.
12  Export of signals to files.
13. Export of charts to: BMP, WMF,  JPG, to clipboard and Files.
14. Zoom and panning.
15. Logarithmic amplitude and frequency.
16. Put picture behind the chart.
17. Background of chart can have gradient.
18. 3D free space Waterfall.
19. Three ways of scaling.
20. Averaging: linear and exponential infinite.
21. Separate configuration of charts for screen and paper.
22. Serial printing and page layout. Put 1,2,3,4 charts on signal page.
23. Tutorial on basics of frequency spectrum interpretation.
24. Configurable sample time and samples number (Sampling frequency)
25. Marking of peaks.
26. Completely serialized and automatic signal processing and printing.
27. Chart templates. 

Signal generator:

* Sinus
* Impulse
* Triangle
* Square
* Transient
* Multiplication
* Delta function
* Gaussian noise
* Random noise

FFT Windows

* Rectangular
* Hamming
* Hanning
* Blackman
* Exponent Down.

The following phenomena can be observed in combination with the build in signal generator:

* FFT and signal type.
* FFT and Window type. 
* Amplitude accuracy at different Windows.
* Frequency accuracy at different Windows.
* Power and RMS Amplitude towards normal.
* Phase spectrum and Windows.
* Beating of Amplitude in real time.
* The effect of DC and relation of DC towards signal average.
* FFT aliasing.
* Time signal aliasing. (Sampling)
* The effect of convolution: time signal and rectangular window. 
* The effect of non-integer number of periods per Window. (In amplitude and Phase)
* Higher harmonics and aliasing.
* Sum and difference frequencies.

