Thank you very much for your reply.
The parameters I need to account for in the simulations are explained in these links.
I can model the horn in onshape, it would not be necessary to model the driver as it can be reduced to boundary inlet conditions.
To do this is currently beyond my pay grade, but I’ll try anyway.
The following tools will be able to export information that could be of help, and the algorithms are known.
[Hornresp] edit (2 link limit)
There should be some interest in such a solution in the DIY market for simulating driver and horn responses.