I know it 100% works. Used it for a long time. Is it using active cancellation by playing an opposing cancellation signal to cancel out frequencies that need cancellation. Or is it simply not playing that signal and instead using designated speakers to play the signal instead from a different location, so a particular resonance is never created in the firstplace.
Unplug all but 1 speaker and find out!
"I can hear the engine buzzing like crazy"
If frequency responses (phase and magnitude) are identical in the same points of the room, then decays will be identical as well, won't they?
I think you are mixing too many variables. Some did not have much improvement with ART except for decay. Phase, magnitude, distortion and several others are not what we have been cross-examining here. It just gets too complicated. At least we have some conclusions rather than none.
I have no opinion about ART; my point was to correct a wrong understanding of the relation between frequency response and decays:
That is true based on experience of some members. Some had better FQ response as well but that was relatively marginal.
My own test says no, it all comes down to how ART calculates i guess.
Yes, that’s right. If you know both phase and magnitude response, you also know the impulse response (by Fourier transformation), and this will tell you about the decay of the system.
Short answer - no - they are different performance aspects and are measured differently.
This is not correct, assuming we consider frequencies up to 150 Hz, which is the case for Dirac ART. This is the modal region, and it is not meaningful to speak about the measured sound at the listening position as the sum of direct and reflected contributions. We have minimal phase in this region. Magnitude and phase together provides the impulse response - this is basic Fourier theory - which again determines the decay.
If you measure anechoically - then there is no decay (other than mechanical limitations of the driver/speaker system, but these are orders of magnitude lower than the standard in room issue)...
I’m not sure what you are trying to say with this. We were talking about decay times of the response of the system. What I’m saying is that if we know the phase and magnitude response of the system in a location - or equivalently the impulse response - then we also know how fast sound decays at that location. No additional information is needed - about room modes or anything else.
Pretty consistent with my experience. Even 2 different 9 position calibration runs turn a bit different, even though I try to keep them consistent in terms of positioning. But difficult to control that within +/- 1 cm, so there it is. I don't really think about it. Just ultimately choose the one that sounds best (as they all measure good and close).
www.audiosciencereview.com
Hi guys, I have a question and wondering if anyone could help. I already took off for for extended Easter holiday trip and this question just keeps popping up in my head while can't really check anything in my system for like next 10 days. Wanted to check myself before the trip by unfortunately too many things had to take priority.
There is a another thread on the forum:
Does 'envelopment' exist? Can it be measured?
I hear trusted people use envelopment a lot. Can someone tell me what it is? How would I create more of it, assuming it's a good thing.
where there is active discussion about stereo bass being (much) better than mono - for 2 ch listening. In short, the way AVR/AVP would summon below crossover bass for LR for bass management with subs would alter the original signal and make it worse. There seem to be graphs to support that.
Now my question is how does that really work on D&M gear with ART engaged? Without ART it would seem that AVR would engage subs in 2ch mode if that option was checked in the audio menu, which would likely result is the mono summoning. But with ART, would ART do its usual thing in 2ch mode even if the option to use subs was not checked in AVR/AVP 2 channel bass management option (or even if checked would it just disregard it)? I.e. would it use ART settings and to the extent subs and other channels support LR, create a "virtual" LR channel spread between all these speakers?
I am not a big 2ch listener. Mostly movies/shows and multi-channel music, but from my recollection the second scenario is how ART handles 2ch signal, so there is no summoning to mono. However, I might be wrong, or there might be even a different scenario that I did not think of.
Many thanks for your help in advance.
Many thanks - this covers lots of it, and do get the point about having more direction/envelopment with FS Low being set lower. I just keep it high for convenience. Only 6 presets (5 of which I really use as that's the max on recall presets button) all of which are filled with same FS low/high and grouping, but from +2dB low shelf to +12dB low shelf. If there was more, would have more variety.
