WIDesigner is a Java application to assist woodwind instrument designers, an open-source program hosted on GitHub, available for free under the GNU Public License. As a stand-alone Java application, it should run under Windows, Mac OSX, Linux, and more, with a suitable JRE installed.
Although WIDesigner brings more complexity to instrument design than other tuning calculators, it offers a number of advantages:
- It models notes over the full range of an instrument, including arbitrary cross-fingerings, and notes in higher registers.
- It supports tapered bores, including multiple tapered sections.
- It uses multivariate optimization, varying multiple instrument dimensions to get accurate tuning across the full range of notes.
- It is the only tuning calculator and optimizer I know of that supports reed instruments.
If you try WIDesigner, please let me know how it works out.