Talk:Engineering Acoustics/Simple Oscillation

This chapter doesn't identify what any of the variables mean. It's as though it's a textbook on Acoustics written for people who already know about Acoustics.

I'm trying to understand Solving for the Position Equation. It doesn't state how you get from one point to another. Is that we are trying to reach the equation of x(t) and we actually reach this point twice? We do a little round trip with the variables A and B but I don't see what they mean.

If anyone understands this please explain it more graphically. The Wikipedia article is actually of better help than the book on this matter...