Two simple questions are often asked in Time Series Analysis. The first is – When did it happen? The second is – What frequency is it? These two questions have been answered by standard analyses. Thirdly, however, the simple question – What frequency was it when it happened? – is less easily answered.
In the Time-Frequency Analysis package, Prosig have been able to implement a number of different algorithms including Wigner Ville, Atlas Zhao Marks and Born Jordan. These all give slightly different emphasis to features of the signal.
This package also includes a comprehensive suite of wavelet analysis tools.
What frequency was it when it happened?
- Wigner Ville
- Zhao Atlas Marks