tu meke!
I'd parse this overblown hype-ridden drivel down, but that would take the fun out of it for all of you.
Enjoy
Townshend Audio Fractal Wire Interconnects | Trade Me
I'd parse this overblown hype-ridden drivel down, but that would take the fun out of it for all of you.
Enjoy
Townshend Audio Fractal Wire Interconnects | Trade Me
Sorry. This line is too good...
"Because signal and return conductors are so tightly spaced external electric fields cannot get in."
Commerce Commission investigation pending.
"Because signal and return conductors are so tightly spaced external electric fields cannot get in."
Commerce Commission investigation pending.
Well it's better than some other geometries I can think of wrt rejecting EMI, so it's not entirely a false claim - at least they're not claiming anything to do with gravity, quarks, tachyons or "quantum".
There is something interesting about that geometry that they don't mention, though - the spiral conductor will add distributed inductance, which should bring it closer to meeting the Heaviside condition.
I doubt the added inductance in that particular cable is enough to be useful, but a more extreme implementation of the same idea could get the cable closer to "ideal".
Do I think there's any benefit for audio? Probably not, but JN's been banging on for days about aledgedly audible problems due to transmission line effects. A cable with constant characteristic impedance and propagation velocity throughout the audio band, properly terminated at the receiving end would solve all his problems, IMHO.
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Nope, totally wrong.
Maybe one of my problems, but there are soooo many...😀
Nah, it's not the cable's fault. It's the load. If it doesn't vary it's impedance in the midband/hf range, the delay goes away.
That said, I do have a solution to the issue I couldn't mention earlier, as the patent was recently awarded, and the DARPA authorities finally signed off on the legal paperwork with only one restriction. I'm not allowed to discuss the technology in any great detail.
I can say however, that it relies on backward modulation of the skin effect via electron spin over the shield braid, something I achieved by intermixing niobium titanium 5 micron fibers with the seven 9's electroless tin plating over the 50 micron nickel/iron flash, followed by a high intensity slow antiproton beam bath.
Cost per meter is only 35K, which is quite cheap considering that the only source of slow antiprotons is down for maintenance at the moment.
Oh, I forgot to mention, there is a wearout mechanism, but I've put together a service contract where I can have them beam a new dose of antiprotons at your system to re-enhance the cables. All for the cost of 2,000 dollars per year..
Act now, while supplies last..
Good enough, George??
jn
You don't find it amusing that those drivers are manufactured in the poorest nation on this side of the continent ?
In jn's defense I beg to differ, both domains (bulk RLC vs. Tline) give the same answer, the same delay. I wish folks would stop bringing up the characteristic impedance at low frequencies. The energy lost vs. energy stored in 10-5 of a wavelength of cable is orders of magnitude apart and can not matter to the answer (especially the parallel conductance loss).
BTW I remain unconvinced about the IAD stuff in general in the free field.
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Uh Oh
Sounds good, except I'm not buying the seven 9's electroless purity level..... not achievable, and pretty hard to measure as well... 😉😉 especially trying to adhere to Nb/Ti fibers😀😀
Sounds good, except I'm not buying the seven 9's electroless purity level..... not achievable, and pretty hard to measure as well... 😉😉 especially trying to adhere to Nb/Ti fibers😀😀
I don't particularly find it amusing, rather 'Snake-Oil' in practice. Alibaba is your friend, buy your "pretty" cast Aluminum baskets (Minimum order 1000), have your minimum wage worker polish some edges on the basket, take some allen screws & screw down the magnet assembly (Way oversize) and call it "handcrafted". Having sorted thru the dozens of coils available, you've found one that seems way too shallow but your sales pitch will do you right.
Now that you've put together your Frankenstein driver you test it, same old ragged response but, that's OK......you'll just sell it for a couple thousand, they'll think it's "worth it". Publish your data on your slick web-site, make sure the response graphing is tiny & un-readable. Pay particular attention to the frequency graph, just a few notations for frequency......just the LOG lines will do. You don't want them to clearly see that 12Db drop at 850 hertz.
_________________________________________________Rick...........
I thought you were going to say , "except the rockettes only do one show on Saturday".
Wasn't sure who'd gig me first on the plating, you or Sy.
jn
Him, of course. I develop technologies to remove metal, he develops technologies to add metal.
I don't buy 1.5 uSec free field either. My guess would be 5 to 10 min free field, and only if there's a reference image to gauge against.
jn
Science or snake oil? You decide.
Newest Focal car woofers ( $600) are a cloth sandwich of glass/flax/glass. " The nature of sound".
OK, flax is light as a core material between the glass. I have to guess some resin too. But If I understand multi-layer structures with different propagation times, this is a well established bad thing to do for a speaker cone.
Has any one heard these things? These guys usually sell pretty decent stuff, if a bit over-priced.
Newest Focal car woofers ( $600) are a cloth sandwich of glass/flax/glass. " The nature of sound".
OK, flax is light as a core material between the glass. I have to guess some resin too. But If I understand multi-layer structures with different propagation times, this is a well established bad thing to do for a speaker cone.
Has any one heard these things? These guys usually sell pretty decent stuff, if a bit over-priced.
On ITD numbers:
Why back in 2006, j.j. wrote:
As I said before, showing 10 microsecond ITD to people is pretty much trivial, at, of course, 44.1 sampling rate. People just her it, and ABX it pretty easily at way over chance rates. Been there, done that. Haven't had a solid hit at 5 microseconds, but then again I haven't tried to actually train someone to hear that.
****************************************
David Griesinger wrote in his PowerPoint:
Pitch, Timbre, and Source Separation
Sound separation: Localizing a String Quartet
From the author’s seat in row F behind the lady in red the string quartet was +-10 degrees in width.
But in the presence of substantial reverberation it was possible to distinctly localize all four players with eyes closed, even when they played together.
This implies a localization acuity of better than three degrees.
With just slightly more reverberation it was not possible to localize the musicians at all.
...........................................
Localizing separated sounds in natural hearing
It is well known that we localize sounds through:
- the Interaural Level Difference (ILD)
- and the Interaural Time Difference (ITD)
Experiments with sine tones show that ITD is not useful above 2kHz due to frequency limits on nerve firings.
- And that ILD loses accuracy below 1kHz as head shadowing decreases.
- But high harmonics in the 1kHz to 4kHz range of low frequency fundamentals contain nearly all the information of speech
And also provide timbre cues that identify musical instruments.
When these harmonics are present we find that we can localize tones accurately with ILD
Why back in 2006, j.j. wrote:
As I said before, showing 10 microsecond ITD to people is pretty much trivial, at, of course, 44.1 sampling rate. People just her it, and ABX it pretty easily at way over chance rates. Been there, done that. Haven't had a solid hit at 5 microseconds, but then again I haven't tried to actually train someone to hear that.
****************************************
David Griesinger wrote in his PowerPoint:
Pitch, Timbre, and Source Separation
Sound separation: Localizing a String Quartet
From the author’s seat in row F behind the lady in red the string quartet was +-10 degrees in width.
But in the presence of substantial reverberation it was possible to distinctly localize all four players with eyes closed, even when they played together.
This implies a localization acuity of better than three degrees.
With just slightly more reverberation it was not possible to localize the musicians at all.
...........................................
Localizing separated sounds in natural hearing
It is well known that we localize sounds through:
- the Interaural Level Difference (ILD)
- and the Interaural Time Difference (ITD)
Experiments with sine tones show that ITD is not useful above 2kHz due to frequency limits on nerve firings.
- And that ILD loses accuracy below 1kHz as head shadowing decreases.
- But high harmonics in the 1kHz to 4kHz range of low frequency fundamentals contain nearly all the information of speech
And also provide timbre cues that identify musical instruments.
When these harmonics are present we find that we can localize tones accurately with ILD
Fine, except JN's the one who brought up characteristic impedance at low frequencies in the first place, and shot down anyone expressing an opinion similar to yours.
Anyway, turns out he was just trolling after all.
Your brochure lucks the drama.
I see no virgin, no alien, no reference to the centuries required for the formation of these metals by natural processes in the centre of globe (and you mention iron
), no mystery, no mysticism.I see an apologetic style for the cost.
Replace “only” with “as a minimum for the entry version”
George
😀
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