It may not answer your question but different people have different hobbies and things they are experts in. It may be the reason.
Sound engineering? 'cause I seriously have no idea how you get that name out of that ad by being an engineer. You don't happen to have reached a mystical level in your Google-dao, do you?
Pfffft. No actually its a mix of mechanical and civil engineering. Its basically like a self study class. The teacher explains basic concepts and formulas. The rest is up to you.There are various things to research like materials, design, location, and eficiency so I am used to using google and doing long research.