Axial Resonance Frequency Calculator

I'm into this book called "How to Build a Small Budget Recording Studio", and it has this section on Resonance Frequencies, and it has charts with vertical lines showing distribution of modes. This was all quite confusing at first, but I gathered that the goal of the calculations and the chart was to discover any buildup around certain frequencies in the sounds traveling in the three basic directions (across width of room, length of room, and from ceiling to floor). If you find a buildup during design, you can adjust your design for a more desirable distribution. Or if you dimensions are permanent, you can then treat those frequencies with acoustic adjustments like absorbers, or whatever is appropriate. Anyway... I'm a programmer and after doing one set of these calculations by hand, I decided it was high time to write a program to do it for me. It's not very fancy, and there are some slight floating-point numerical inaccuracies, but it does the job of showing the distribution fairly well for a quick project. It can be found and downloaded freely from my website http://www.sethgorden.com/index.php/archives/62. I hope this is a useful tool for people. Like I said, this was all new to me, and I learned a lot from researching this way of evaluating a room.

Hai SMGorden! Did you know there's already a few good mode calculators on the net? I haven't checked yours, yet, but sure am gonna.