| Wow
Hi John, thanks for joining in. I am kinda gobsmacked here. As another poster has said Ethan's graph is 'extraordinary'. I have never seen anything like it in my practice or in any textbook. I use Ethan's Traps and others in treating mostly small Control Rooms. I have never seen such a dramatic improvement. That may be partly because I have never gotten useful EDT information from FM2, although I find the Waterfalls very reliable and can happily work away with them. So I hope you and Ethan both will forgive me if I poke at this a little to be sure of it. Something 'extraordinary' has happened here and I am very excited about it.
RT60 etc.
In my experience FM2 does not deliver reliable EDT T20 T30 graphs in small rooms.
Ethan has described a very similar experience with ETF.
Bruel and Kjaer equipment (costing multiples in tens more) goes to a great deal of trouble to get over the uncertainties. It uses multiple sweeps. It has 'quality indicators' for the results, prompting one to go again when it is not happy with them.
ISO RT measurement techniques use averaging with multiple source and measurement locations.
Clearly it is not easy to get trustworthy decay readings in small rooms.
I suspect that the reason for this would be that RT60 is not defined in small rooms. The sound field is not mathematically diffuse over the frequency spectrum of interest.
Thus any formulae based on classical RT60 theory cannot be fully valid in small rooms, and results using these formula will be compromised.
John, from your description ( and I am no mathematician) I can tell that you have experienced similar flaky results in experimentation and you have found a way out. In my simplistic view, your method seems to be based on using several classical approaches simultaneously, plus a good deal of your own seasoning and special sauce.
To me right now, this looks like a major breakthrough. I applaud you for that.
I don't have a PC, but if this all turns up fully true I will buy one! Perhaps it is time for an Intel Mac, then I would be able to move up to FuzzMeasure 3 also.
In the meantime perhaps you would be so kind as to advise and provide me with a version of REW suited to my Mac G5 OS 10.4. I will send you a PM to get in private touch.
Ethan, could you please show us the Waterfall? I am getting a bit suspicious. This miracle room thing, the multi-instrumentalist thing, the cat thing........
.Are we talking Wicca here or have you been to the Crossroads?
DD |