Software

Executable

Source

Digital filtering using
a Butterworth 6th order filter. The user must supply an input
time history file. Both lowpass and highpass
options are available.



Fast Fourier transform
(FFT) of a time history. The transform operates on a time
series with 2^n points, where n is an integer.
Also, corresponding
inverse FFT.



Conventional Fourier
transform of a time series with an arbitrary number of points.



Generation of time
history signals:
1. sine
2. damped sine
3. sine sweep
4. white noise
5. pink noise


_

Firstorder trend
identification and removal.



Secondorder trend
identification and removal.



Cubic Spline Curvefit:



Integrate a time
history via the trapezoidal rule.



Differentiate
a time history.


