• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Whenever you search in PBworks or on the Web, Dokkio Sidebar (from the makers of PBworks) will run the same search in your Drive, Dropbox, OneDrive, Gmail, Slack, and browsed web pages. Now you can find what you're looking for wherever it lives. Try Dokkio Sidebar for free.



Page history last edited by Noah Vawter 8 years, 3 months ago

  Complete Instruments      Instrument Bodies


     Generators           Switching Power Supply



        Synthesizers         Synthesizer Controls



      Loudspeakers        Amplifiers       Horn Design


This horn design was automatically generating using our new horn design program in Python:




     Most loudspeaker design is focused on creating as realistic or flat a response curve as possible in order to reproduce the beauty of the original instruments/recordings.  Exertion Instruments use resonance in a different way.  The goal is creating an electronic instrument with characteristic, beautiful sounds of their own through experimenting and controling the resonance.  There are many different resonance structures and some good books out there describing how the resonances of classic acoustic instruments work.  This page describes how to design resonant bodies for Exertion Instrument which you can actually build in your home or workshop in a DIY fashion.


Example Instrument Body

This link demonstrates an example instrument body which was prototyped in cardboard, then assembled from plywood.



Design Links





These are the main resonance types:





     This is one of the easiest resonance types to make.  It simply requires a largish body.  You can estimate the resonant frequency of the body by calculating its volume.  For example, you could use a 5 gallon water jug as a resonance.







Web Applets to aid resonance calculation:







Conical Horn


Web Applets to aid resonance calculation:





Exponential Horn






Folded Exponential Horn







Speakers     Instrument Bodies

Comments (0)

You don't have permission to comment on this page.