With due respect, self aggrandizing as having supernatural hearing does not count much as "evidence".
Besides that, statistically "samples of one" do not count either.
Show me an experiment involving 100+ people, consistently showing results statistically different than coin tossing, and we re talking.
A properly designed and controlled experiment of course.
Yes you can misinterpret anything I write. The point is that there are barriers to current flow that once punched through no longer matter.
As to copper oxide rectifiers they are still in production and used for a particular audio product. However in the application under consideration here the copper oxide is a spot on a conductor so any diode formed is shunted by a very low resistance conductor. That is why they don't matter. In the case where a bad connector design is corrupted by copper oxide the diode's reverse voltage breakdown is quite low and the diode can be destroyed or becomes a short circuit.
Of course there are almost no mechanical audio connections that are copper on copper. In most connections it is not the oxygen contamination that causes problems, it is often from sulphur at even very low levels.
But you are welcome to misunderstand as much as you need to. Pretty sure post 353 applies.
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Jim,
If someone tells me they use brand xyz because it sounds better to them than brand abc and the measurements show the same, I consider that evidence not proof. Even measurements are not perfect proof as there may be different conditions in use, production changes or something not yet identified.
It also means that if they suggest something I am more inclined to try it and see for myself. (Yes measure it!)
When someone tells me they read something on the internet and therefore it must be true... I see no reason to insult them. I think it is nicer to just ignore idiots, unless there is the chance their ramblings might confuse some.
When SinGun indeed used a similar circuit that he mentioned here
Resistor Sound Quality Shootout
that uses after the 22K shunt resistor a ferrite bead followed by a 560pF cap to gnd, I see no reason for possible instabilities that I feared, that could have taken their share in the mentioned perceived sound differences.
That's why I contacted him via a PM to ask for a picture showing his test set-up.
Let's see what happens.
Hans
Resistor Sound Quality Shootout
that uses after the 22K shunt resistor a ferrite bead followed by a 560pF cap to gnd, I see no reason for possible instabilities that I feared, that could have taken their share in the mentioned perceived sound differences.
That's why I contacted him via a PM to ask for a picture showing his test set-up.
Let's see what happens.
Hans
What evidence, I see zero. Claims of hearing need proof, again zero.
Just like his claims he can hear wire direction and bybees.
Sure, because no one measures first and then decides which "sounds better".
Again, zero proof.
So according to your logic, the 0.6V silicon diode barrier, or any Schottky barrier, are of a different physical nature...
Flash news, they are not. The height of the energy barrier is larger (0.6eV vs. 25KeV), but from a physics perspective they are phenomenological exactly the same, that is, the energy that an electron needs to acquire to pass into the conduction band. Applying a voltage over the device (0.6V or 25kV) is exactly that: potential energy passed to the electrons.
Really Ed, you need some undergraduate level solid state physics refresh, I'm sorry.
Really, so in your world plastic is a semiconductor! Causing an insulator to fail is the issue. But again you just want to misunderstand the issue.
Moving nothing, only asking for satistically significative experimenting.
Similar ones have been made by the hundreds or thousands and there is where our Acoustics knowledge comes from, nowhere else.
How do you think it was determined that currently accepted standards, such as minimum audible levels, equal loudness curves, etc. were determined?
By asking ONE guy?
Gimme a break.
ALL were determined STATISTICALLY, exactly what I am suggesting.
A couple examples.
* on hearing threshold:
Notice in Psychoacoustics the listening subject does not control what he´s supposed to hear or test which irremediably contaminates the "experiment" (what the OP did by soldering different resistors and claiming sound changes) but "somebody else".
At least blind testing (for the listener) and if possible double blind.
I HOPE you are not discarding Fletcher-Munson´s painfully
researched experiments in favour of a random Forum member and his wild "samples of one" claims:
No kidding!!!!
No, plastic is not a semiconductor, plastic is a solid state material. The physics of solid state (and the physics in general) applies.
Please do some reading on what is called a "MIM diode", Wikipedia is a good start. MIM stands for metal-insulator-metal diode, where insulator can be anything from vacuum to plastic. Lack of knowledge is no ground for denying reality: any IV discontinuity is rectifying, no exceptions.
I guess now everybody understand why I invoked tongue-in-cheek "microdiodes, Ed's specialty". Your claims have in common with the OP the lack of grounding in physics, as we know it, and/or inventing a new private physics to support outlandish claims.
You've asked for "proof" from individuals, now you want 100+ people to do the test, what's wrong with one person doing it a 100+ times if that's how many times they'd have to do it to satisfy you?
Your ability to misinterpret things is quite amazing. It is quite difficult to produce a MIM diode. The probability of it occurring by accident from contact contamination is virtually zero.
Any musician who has had a dead microphone and then tapped it to restore function has demonstrated how fragile many of these bad contact barriers are.
Of course in your world relays won’t work either.
Of course your posts have been both microdiodes are an issue and they aren’t.
Then my outlandish claims are followed up with tests and measurements.
So why don’t you show a single measurement and result.
First though we could discuss what a diode is!
Diode - Wikipedia
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a) Your measurements are at best not consistent and misinterpreted.
b) I can't measure what doesn't exist.
That plug is defective in several ways. Severely corroded. Design appears too lack a spring tensioning feature. Insolator on back looks cracked.
Speculation, but could the elevated noise just be that the plug just did not short at all and the elevated noise is the same as you would get without a plug installed?
Speculation, but could the elevated noise just be that the plug just did not short at all and the elevated noise is the same as you would get without a plug installed?
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