Thanks for the resources. On the first link do you have the article they speak of that gives detailed directions. I have plugged in my dimensions and it answer a lot of questions. Am I supposed to fill in anything else? Thanks for your insight.
I just plugged in my room dimensions in cells C4,C5, & C6 and estimated "ear location" in cells C12, C13, & C14. Then look for the lowest problem frequency in cell B27. By changing the room dimensions, I able to reduce the problem frequencies to only 4. Most everything else is over my head. When framing, make an allowance for the sheetrock so the dimension is correct when finished. If you google "room frequency response" there are other excel sheets. This is the one I liked best.