| Understood
Claro, Amigos. However I do not at all agree that below 80 can set aside, due to measurement or other difficulties. Later ISO and other Standards use extended spectra e.g. 63Hz - 10K and such. They extended because they were getting wrong results.
I believe John is working on some innovative ways to look at the lower frequencies of interest, getting away from Classical definitions and formulae. What I would like to to see is 'how long a room rings on' in third octaves. If a particular band is dominated by a mode, I don't really mind, that is still good info and the Waterfall will indentify the mode. I believe the shape of the decay spectrum is much more indicative of a room's sound then either Freq. Resp. or Waterfalls. I look forward to John's new takes on this.
DD |