Yes, I agree with this. If the DI is high and the speakers toed in the imaging can be excellent without wall treatment. I do that.
I don't know what you mean by "periods" for the time axis, but the way this is displayed is normal for waterfalls.
A decay waterfall with periods instead of msec, is a pretty simple transform, and with all the talk of measurements you don’t know? 35-40 dB is more useful.
Also called burst decay. This is an example from @Joseph Crowe site. Toole gives a good explanation why this formatis better.
One can directly comoare the Qs of resonances, and it makes it easy to read the ring down. A good ring-down has nice parallelism curve.
dave
Also called burst decay. This is an example from @Joseph Crowe site. Toole gives a good explanation why this formatis better.
One can directly comoare the Qs of resonances, and it makes it easy to read the ring down. A good ring-down has nice parallelism curve.
dave
I don't understand the hassle - there are products out there for decoupling loads. No, not these HiFi stupidities, proper vibration decoupling.
Search for Sylomer pads. Cheap and easy to use. Choose the right ones for your weight and you are done. (Sorry wrong country. But they are available world wide ;-), took 1 minute)
https://www.spillner-ssb.de/sylomer/pads.html
https://www.amazon.de/PolySound-Hig...ungsdämpfer-23-60kg-braun/dp/B07NLDJ8HM/?th=1
You get a resonance frequency 11-14Hz, that's pretty good for such an easy and cheap tool.
When you need BETTER - it get's way more complicated. Pure spring loaded decoupling gets very weak/wobbly with the usual loads and very low resonance frequency. Air decouplers would work down in the 5Hz area but are a hassle and pretty expensive. You have to maintain the pressure or get some permanently connected to the air pressure network - which you normally don't have in private houses ;-)
p.s.: a decoupling mechanism ALWAYS has to work with the load/weight! When there is no component weight specified - forget it, it's 100% to stiff.