The thing is Nathan, this training won't be about how techniques work. I mean it will be once we get t that portion and you need to know what techniques do what and such. However Sound release, it's important that you know the basic foundations of how it works. If not you will end up miss using it for lack of knowledge. You are a sensei, thus I expect for you to know the basic principles of how a jutsu works. Thus Manipulating sound chakra and forming it how you want it and release it for damage/etc.... is something that you should know. When we get to techniques, we will only going to be covering what the out come of the jutsu would be. Like end results of the jutsu, how fast it travels and what not, advanced stregnth and weakness. However lets cover what actually is SOUND.
In the posts above you expland Frequencies and Waves. Thus we will not go into that portion, as i think you understand that portion of this element and how it works. When I asked you about advantages and weakness, it's quite different in my opinion. You have the basic weakness down as the wind element will successfully negate the sound release as it's used as a medium. However Sound can be used with other mediums. Gas', earth, solids... ect.... The trick is to know why is it a weakness. First ask yourself what is the main strength of sound release is. I'll tell you as it's easy and to futher this training quicker. It's speed!!!!!!!!!!!! Probably already knew that. Though i did say there are other mediums that sound can be used with. "Pretty much anything" Though there are down falls or weakness to this. Same as strength depending on what kind of medium.
So with a little research, tell me Doton, what would sound release do when used with doton as a medium???