New update of dBSea - while we wait for 2.0

A smarter, more streamlined dBSea

dSBea 1.3.10 has hit our webpage. While not much has happened on the graphical output side, quite a bit of work has been done on the inner workings of the solvers, along with some productivity tweaks.

So if you've never seen dBSea before, this post might not be for you, but by all means, feel free to read on anyway! (and download a copy)

The Parabolic equation solver has got an overhaul, and now uses "Greene's Approximation" for first steps, unless the user decides to use any number of Padé terms. These two methods allow the Parabolic Equation solver to have a much broader sound emission angle from the source.

While this sounds very technical, it means that sound will now propagate in a more realistic fashion from the source - this is especially important for accurately predicting more complex scenarios. We have also improved on the energy coupling algorithm to facilitate even steeper propagation angles.

To make the solving even faster solvers now stop when they reach land (unless you choose otherwise)

We have included a slider for you to select the number of CPU-cores you want to use, so you can keep some of your processors for other tasks.

dBSeaModes modal solver is now even faster!

We have changed the way the total time of the scenario is set, so it is now harder to misunderstand exposure levels due to differences in exposure time.

For quick checks of your solution, we've added 20log and 10log transmission loss lines to the cross-section plot. This plot allows a radial view of all the calculated transmission losses and is a very useful tool for investigating results.

Thanks for reading!

We are working hard on a dBSea 2.0, and rumour has it that it will feature full 3D-solvers!

(By the way, this post was all done with examples from dBSea running in linux (wine usp10.dll set to native, then built-in))