Some time ago I spent 'a lot' of time looking at digital signal processing and time series data.
There is a good discussion on Tradestation forum the subject is there is anything in phase, amp, or frequency that can be used to trade. The consensus was no. Previous phase, amp, or freq has nothing to do with the next bar, only the past. Too bad, it makes great charts.
You can look at 'Rocket Science for Traders', get all of the ELDs from Tradestation.com and see for yourself.
A better set of C++ tools is available on Numerical Recipes site
http://www.nr.com/.
Between the Tradestation ELDs and the NR code you can look for yourself to see if there is anything helpful.
Or, study price action by itself which is a better use of ones time. The written work by J.M. Hurst is much more helpful that the more recent computer tools. (At least for me...)
Has anyone found anything useful with signal processing????
Good trading next week. Should be interesting!!!