Seismatters

Added Savitzky-Golay smoothing as a filter option in the latest version.

A description of the algorithm can be seen here:

https://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_filter

It essentially acts as a type of High Cut filter. Below, an unfiltered shot display

And here the same with an SG Filter applied:

As you can see below, it is not spectrally smooth, but can be quite useful in cleaning up noisy displays.

                     5 Point                                          9 Point

           19 Point                                       25 Point

As the program has not garnered much interest, I am suspending development of it for now.

There doesn’t seem to be much point in developing QC tools for an industry that doesn’t want them, or me.

I need to find some way of making some money, and this isn’t it!

The latest User Manual can be downloaded here:

http://www.seismatters.com/SMRefract/SMRefract%20User%20Ref.pdf

The latest version adds a Relative Phase display, accessed from the Relative Spectra Page.

Not a particularly elegant user interface, but it’s not something that will get a lot if use unless it is really needed.

Here a display of selected traces from a DSD GF file.

Possibly interesting for those who claim to understand the intricacies of vibrator control systems, but is likely to create all sorts of confusion for the rest of us.

Especially as any trace can be selected as the reference from which the phase difference is calculated, producing a totally different plot:

For diagnostic and research purposes it might be quite useful though, if interpreted carefully.

The latest user manual can be downloaded here:

http://www.seismatters.com/SMRefract/SMRefract%20User%20Ref.pdf