There are some practical problems with that approach. The first big problem is that good quality human studies are hard, time consuming and expensive. Not something a few people in a forum like this could undertake. Also, not something likely to be funded soon.
What I can do as one individual is offer individual people a chance to listen in a setting where the same people can listen to the same sound in the same room at the same time, and what clues to listen for can be mutually discussed. For example in the way of clues, I mentioned before about cymbal sound and also about vocal harmonies. I have some real cymbals here for direct comparison. There are other clues that can be listened for. One person at time now and then is a level of effort I am willing and able to offer. That's the limit of what I can do, funding expensive research is out of my pocket-depth league.
One other thing: I continue to think about making some recordings as Matt keeps badgering me to do. When I have the AK4499 dac working again and between other experiments I want to do, I will think about making some time to try recording. If I do try and if recordings reproduce differences realistically enough, then there should not be any reason not to post them.
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It's not bait. It is a direct observation that you cannot help but resort to denigration. And it came almost instantly after you hoisted a post as your assertion that you are innocent of that schtick but that others are making things up or being too sensitive.
It is unfortunate that everybody here has to put up with your constant derogatory remarks. One would hope that you would learn to use language in a more reasonable manner, but no, you are the scorpion on the frog.
Jn
Matt,
How much do you think there is to gain on a full range? Your gonna need dsp for manipulation.
Do you use subs? If so would this work in that range? I think phase relationships at the sub xo is very important even in focusing the upper frequencies. Have no idea why just hear it.
How much do you think there is to gain on a full range? Your gonna need dsp for manipulation.
Do you use subs? If so would this work in that range? I think phase relationships at the sub xo is very important even in focusing the upper frequencies. Have no idea why just hear it.
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Bob, it isn't just static phase. If you are using a modern delta-sigma dac then clock jitter has various insidious effects including blurring of imaging.
No it wasn't, someone showed the quasi-DC I/V characteristics of a homemade copper based "diode". I asked how that extrapolates to a multi-strand cable with a good connection at each end. Simply pointing out a typical inappropriate analogy.
That would be for 10' of #10 wire about -60dB of static non-linearity, not hard to measure and I would expect that Belden would have an engineering brief on that.
If the post I linked to earlier had images I probably wouldn't bother, but those that saw them said they were good, I want to see what I can measure as I have the same speakers (near as damn it). I will use them full range without the subs for the test
So asking how copper oxide contact degradation of a multi strand cable on an audio website isn't about audibility? That was precisely why I injected both E/M and testing, otherwise it's just hand waving to no end other than argument.
I am confident Belden has no briefs on measurement accuracy in the audio band for ten feet (give or take) for Ls/Rs, with long term degradation of proximity as the goal. Belden does not have that level of measurement accuracy. In fact, when I collated data on many of their cable product, I found roughly ten percent of their data sheets terribly inaccurate w/r to inductance and capacitance per foot. Nowadays, they don't even list inductance per foot on a lot of their data sheets.
I don't see Steve even going down this path, it serves Belden no useful purpose.
Belden would simply say buy new wire..
As to static non linearity, with no dI/dt, as I mentioned, no proximity/skin, just end to end bulk cable assuming you use RA flux to establish good end connection. Bad looking, but as long as the cross section isn't heavily compromised, nothing at DC to look at, unless you want to track room temp using the .343 % coefficient of copper.
Jn
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Mark,
Probably so, but with manipulation of dsp both phase delay and group delay around the sub frequency xo there are notable differences in the upper register focus. Don’t know if it’s just a perception or an actual sharpening of focus......either way it makes for better (I wish I could measure it) and I know this because I can manipulate this focus in/out landing on the same settings.....make any change to the system down to even speaker wire and that setting moves a little.
Probably so, but with manipulation of dsp both phase delay and group delay around the sub frequency xo there are notable differences in the upper register focus. Don’t know if it’s just a perception or an actual sharpening of focus......either way it makes for better (I wish I could measure it) and I know this because I can manipulate this focus in/out landing on the same settings.....make any change to the system down to even speaker wire and that setting moves a little.
"Men are born free and equal in rights".
Some are more equal than others. ©Coluche.
That was the point in the first place, no need to go berserker on me. The same poor analogies keep coming up with caps and resistors too.
JN,
How could you forget the cardinal rule of engineering; "There is nothing new to be learned after college!"
All you can do in practice is to look up stuff in your old textbooks.
😉 😉 🙂 !!!
How could you forget the cardinal rule of engineering; "There is nothing new to be learned after college!"
All you can do in practice is to look up stuff in your old textbooks.
😉 😉 🙂 !!!
Yah, I get that a lot.
Making a toroidal winder in my basement. Don't like the slider or belt style as they do not control wire lay as the feed drops through the toroid. So I'm building it two ring internal drive. Using an arduino and an L293D chip fed by a 74HCT595. (If I get tired of that approach, I'll punt and use step/direction into a drive unit that can also give me 512 point micro-stepping.)
Rings are sized at 3 inch diameter, initial target is 1000 turns 28 to 34 AWG on a .2 inch section toroid roughly 1 inch ID. Just have to make sure I can load 80 feet onto the spool.
Next hurdle is tapping the aluminum rings either 0/80, 1/72, or 2/56 to make hinges. I look forward to not breaking a tap or a drill bit during this process, one can only hope..Then I split the rings using my newly purchased 5 mil thick razor saws.
The four jaw and six inch lathe plate adapter arrives Tuesday, then I can turn the offset shaft part needed for adjustment of the v groove bearing spacing as well as turn down the vertical 1/4 inch thick aluminum plate from 6 by 6 square to something that looks like it's high tech..
So much fun, so much to learn but luckily I have some very good tech friends at work to draw on.
Oh, btw...this project is not about going into the toroid winding business...it's about slowly climbing the machining learning curve, and more importantly, about having excuses for buying more tools..or, if I break a 1/72 tap in the work thereby ruining it..a reason to drink..😱😀
Jn
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I am not going berserker on you. We absolutely agree on the DC aspects of a heavily oxidized stranded cable.
Bob mentioned audible differences using a badly greenified cable..(spoiler alert, new verb)
I discuss that in reference to non DC operation.
Jn
I have an HP Z analyzer if that would help.... HP4192A.
Too big to bring with me but Jam has it now and Mark can use it.
I used it for cables, wires, insulation, dielectrics of passive parts etc. learned a lot.
5Hz to 13 Mhz. Extreme resolution of phase et al. .
THx-RNMarsh
Too big to bring with me but Jam has it now and Mark can use it.
I used it for cables, wires, insulation, dielectrics of passive parts etc. learned a lot.
5Hz to 13 Mhz. Extreme resolution of phase et al. .
THx-RNMarsh
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Surprisingly a tap head mounted to a drill press has allowed me to wear out titanium nitride coated taps without breakage.
The secret is an adjustable torque limiter. Also it doubles the reverse speed for finishing.
My suggestion is two pieces of telescoping brass tubing between the tap holder and tap. Length out the back can adjust the torque.
The secret is an adjustable torque limiter. Also it doubles the reverse speed for finishing.
My suggestion is two pieces of telescoping brass tubing between the tap holder and tap. Length out the back can adjust the torque.
While clearly stating you have no clue if that non DC effect is audible:
which is what was clearly questioned, as quoted earlier. And showing you know well how to hold a grudge, in the applause of the peanut gallery of innocents or less innocents with an agenda.
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