USMC_Trev
Axe-Master
Volterra kernels
talk dirty
BTW Volterra also got involved in population/ecology biology (specifically Lotka-Volterra competition)
flubby, flabby and farty
Out of context, this is even more awesome.
Volterra kernels
flubby, flabby and farty
If it was intended, disregard, but in this case it was kinda weird. A more logical start point would have been 1:39. Not a big deal, just thought you might like to know.
Right on, then.Interestingly enough, I actually did just that and copied it right from the address bar and it still did it that way. I know I didn't use the share feature because I went back to look at the video and had to remember where its at, so I didn't recently do that for sure.
But I did kind of want it to start at that point anyway because thats around when he starts discussing the modeling portion.
Really interesting discussion, but a question arises: could the method to capture IRs hide some phenomena that occurs only on some circumstances?
I mean, an IR is almost always captured with a sine sweep which is just a single frequency being reproduced by the speaker at a time, but this would not detect for example some irregular motion of the cone that might occur when the speaker tries to reproduce more complex sounds.
Could be interesting to compare IRs of the same cab+mic configuration captured using different test tones (white noise, pink noise, double sine sweep, music program) to see if the frequency response remains the same across all of them.
But maybe someone has already done this kind of tests or maybe my knowledge is too limited to talk about these things and my argument is just "bovine stools"
...Anyone want to take bets on "cone cry" being 2018's guitar related buzzword ?
Found another link for ya of actual tests being done:Is this "in theory" or actual tests have been done?
I'll surely check both your and @AlbertA 's links, thanks!Found another link for ya of actual tests being done:
http://www.montefiore.ulg.ac.be/~stan/ArticleJAES.pdf
Quality of the impulse response can be different with different methods, but not in the way you're insinuating, which seems to be "maybe we're missing something with a sine sweep" vibe. An impulse response is an impulse response. It's a mathematical process, and math is just... true period, not "in theory"
@AlbertA knows a ton more! Follow his link! I don't know why I'm still replying to this thread with all these qualified DSP people present! Haha.
What I would love to see is some way to capture the sound of the speaker across its whole surface as opposed to just one fixed mic position. You could then maybe have the ability to move the mic position and angle around the speaker cone virtually instead of changing IR's for each fixed position. That would be really freaking cool for tweaking out exactly the cab sound you want.
Maybe something like taking a series of IR shots from a bunch of measured positions around the speaker and then interpolating some kind of master "image" of the whole speaker's sound?
I misread your previous post and so deleted my response to it. Your main point is that you want a more automated speaker compression & drive values, but I thought you were trying to say something else and responded in an irrelevant way. My bad!The speaker compression parameter mimics the compression that comes from the speaker
I pointed some relevant papers here: https://forum.fractalaudio.com/threads/firmware-supplied-irs.48818/page-3#post-637628
That was certainly one of my points, but also, I am not convinced that all speakers can be described with the same "Compression amount", "Time constant" and "Speaker drive". I would expect AlNiCo, Ceramic and Rare Earth magnets in speakers to relax in quite different ways - not just with different time constants.I misread your previous post and so deleted my response to it. Your main point is that you want a more automated speaker compression & drive values, but I thought you were trying to say something else and responded in an irrelevant way. My bad!
I wouldn't think different magnet types would affect Speaker Compression and Time Constant parameters, as that's related to the power amp and voice coil related compression to my understanding.That was certainly one of my points, but also, I am not convinced that all speakers can be described with the same "Compression amount", "Time constant" and "Speaker drive". I would expect AlNiCo, Ceramic and Rare Earth magnets in speakers to relax in quite different ways - not just with different time constants.
But again, I think FAS has taken giant steps down this path already, I just hope, it will be even better in the future.
I wouldn't think different magnet types would affect Speaker Compression and Time Constant parameters, as that's related to the power amp and voice coil related compression to my understanding.
It might affect Speaker Drive...? Maybe the differences in magnetic strength will affect the knee and ratio of the magnetic compression as the driver goes into over-excursion. Would this be noticeable? Is this already accounted for in the Speaker Drive parameter? Dunno But I get your point.