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Originally Posted by Ben
But in the end it's all maths and can be calculated, I guess?
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Although computers are a useful tool for calculating acoustics, wave behaviour in 3 dimensions is one of the most complex PHYSICS problems out there. I recently wrote a paper about this, and I was surprised that things like altiverb are possible.
What you are getting with IR is an approximation. There are so many variables. Air density is a variable. The advantage of the computer is that it can calculate many mundane tasks quickly. However, large calculations such as 3D wave behaviour would still take years for an exact answer. That is where the algorithm comes in. The algorithm in general is a detailed list of instructions on what to repeat and what to do when you get to the nth member. However, when you are dealing with a ton of data, a good algorithm is going to have to have some sort of approximation to get things done.
This is probably more than you were asking for, but I'm just trying to make it clear that computers are still far from the point of a perfect map of wave behaviour. Your actual wav files are also an approximation, so while I think you have a great idea, I would think it more useful to use the reverse IR just to get an idea of what frequencies are removed