Originally Posted by AustinJerry
80dB is still too low. I am in the process of updating the guide, and I'll recommend a higher setting.
I misspelled "Spectrogram". I am adding a section for this graph as well.
Something that the group should discuss is when a waterfall will be more useful for diagnostics than a spectrogram, above and beyond the FR plot and ETC that we already have in our tool kits as well. Based on the past few days, for looking at bass decay it's a slam-dunk that spectrograms communicate more useful information on one chart than a waterfall. You might want to make sure that the settings that are the defaults in the spectrogram are the ones we want to use, or add the ones that any experts are recommending.
BTW, I did approximately 85 db on my plots on Saturday and I had to plug my ears. Picking up noise-limiting protective devices for your ears is HIGHLY recommended for serious measurement above 85 db IMO (and depending on where you're sitting when measuring, IMO maybe 80 db). Hopefully there's an 85 db exception for special cases (urban living in our case or WAF), with 90 db as the lowest GAAP otherwise. That's an abbreviation for generally accepted acoustic practice on the thread, with apologies to accountants LOL. Yes, we've gotten that formal...
DK about you, Jerry, but I notice a fairly drastic difference between 75 and 85 db. Maybe I'm not deaf enough from listening to rock close up in my misspent "youth" (the 80's)....Edited by sdrucker - 11/3/13 at 7:55pm