I was thinking that it might make life easier for everyone if various calculators were provided and, if possible, consolidated somewhere. For example, I am attaching a simple excel spread sheet for calculating the weight of your floated room - a critical number in determining spring (pad) placement and quantity. This make it easier to change parameters and get immediate feedback. This spread sheet is nothing fancy, but I found it very useful. I will update it as I get more info on weights of various common materials. For this first pass I used the values provided by knightfly somewhere else on this site. It has two pages. On the first page you put in all your building materials. On the second page you put in all your other stuff. A running total is shown at the bottom of the first page. The total weight of materials plus your gear is shown at the bottom of the first page.
If this is useful - great! Feel free to change it at will or to totally ignore it if you have everything figured out already.
Here is another useful spread sheet. It calculates all of the modes of a rectangular room using the formula on page 144 (12-1) of "Sound Studio Construction on a Budget" by F. Alton Everest long link I find this book to be killer (albeit somewhat academic) reference material.
I am pretty sure the spread sheet formula is accurate (but if you discover otherwise, please let me know). The second page gives the frequencies for notes in the audio spectrum so you can quickly figure out which notes are going to be most heavily impacted by the modal frequencies of your room. You can use this to figure out modes for any parallal surfaces (even if your room has non-parallal side walls) and I have color coded the different mode flavors (axial, tangential and oblique) for "easy" visual reference.
Again, feel free to modify to taste.
Eric
BTW - if people feel that this stuff is not of any value - please let me know and I'll hold off on further posts - I just made these spreads to help me design my rooms and figured that I may not be the only guy on the planet trying to plan ahead and avoid the avoidable....
I'm about out of time for now, I changed your long link so it doesn't make us scroll sideways to read - I'll check these out later, but feel free to post; I've been considering a separate forum (or maybe just a sticky) just for calculation tools, so thanks for "getting me off my ass"... Steve
Man, If I had known about that great mode calculator I would have snagged it long ago - more motivation to have a central calculator depot!
Steve - from the reading I have done you may be physically on your ass a lot (unless you type standing up) but you are definitely putting in the above and beyond effort on this amazing site! Infinite thanks!!
