There's a decent amount of new stuff packed into this release. Most visible is a new "Bore" tab, where you can see a drawing of your bore, and optionally a view of what the pressure wave looks like at a certain frequency.
There are also some useful new tools, including the ability to choose a frequency, and have the program automatically scale the bore lengthwise so that it's fundamental (the drone) matches that frequency.
I've got the first release up. It's pretty basic at the moment. It allows you to enter in the bore dimensions and calculate and display the impedance.
For the next release, I'm thinking about adding a way to "morph" the charts from one set of dimension to another, so you can see how the impedance changes, as the bore changes. For example, you could extend the length of one of the sections, and it would animate the chart to show how the impedance changes as that section lengthens