In a previous thread there were several members who wrote that they were interested in saxophone acoustics. I'd like to start a discussion on finding the length and volume of the "missing cone" for each member's particular set up. None of these exercises requires more than high school algebra to accomplish. Then I would like to follow up with a separate thread showing a method to determine the "effective volume" of a mouthpiece as it is being played. Comments, questions, criticisms of the methods being used are most welcome. I am certainly not an expert or authority on any of this, but I believe a healthy debate can get us all closer to the answers we are looking for.