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08/14/2018 Spirograph in R.
11/01/2014 New program Fourier Series 3D for interactive demonstration of Fourier series added.
6/18/2013 MATLAB source code of ACR method - Autoregressive causal relation: Digital filtering approach to causality measures in frequency domain added.
1/22/2013 New version of Music Notes Training - Noty 2013 to easily learn how to read music sheet.
2/13/2009 New homepage of Software Strobe Tuner for Windows, TB Strobe Tuner: