I found online, I cannot find the original link but there are numerous out there, an "air horn" made from a 35 mm film canister. Instead of making my own film canister I cheated. I used the film canister by smily77 and modified it for the new use that it will have. The note, as posted here, is 502 Hz or a B at roughly 84 dB. If I figure out how to make a configurable set I will replace the current files with one that will take a note wanted and scale the models. The horn has been printed, and while I perceive a difference in the volume, the sound meter that I am using, a phone app so meh, does not register anything more than 84 dB. Youtube Video: https://www.youtube.com/watch?v=3hJrTVICkbs I really hate being on film so ignore the stupidity. Please note. Use this responsibly. This is meant to be used at sporting events or concerts. Someplace where there is already a lot of noise. Soccer / Futbol is the best event with American Football being next.Edit: 9-November-2015After running through another balloon, I decided to play with different materials to form the diaphragm. Using regular notebook paper seems to work very well!The pictured NoiseMaker was printed at 0.47 mm layer height with a 0.6 mm nozzle. I did it this way as I was tooooooo impatient to wait for a 0.25 mm nozzle. After printing all items, minus the horn, assembly is as follows: 1) Take a large balloon and cut it in half. You need to cut it in such a way that you have enough material left over to stretch it over the large opening of the canister. a) If you do not have a balloon handy, latex gloves will work as will plastic wrap. The plastic wrap will likely fail sooner than the latex gloves or balloon. 2) While the balloon is stretched over the opening, take the large ring and snap it down into the canister trapping the balloon. a) This makes the diaphragm 3) Carefully wiggle the tube through the bottom of the NoiseMaker, the smaller hole, until the tube makes an indention into the balloon. a) If necessary, put the tube in first from the larger opening. I had to do this as it was difficult to push the tube all of the way into the canister. b) If necessary, trim the smaller opening ever so slightly until the tube snugly fits. If it is too loose you will need to find a way to secure it as the NoiseMaker works best if it is as air tight as possible at all of the seams. 4) Blow into the hole on the side of the canister. If everything was done correctly you should now hear a B note. 5) Print out the horn as attached and profit.