Cables are not and cannot be directional. And if they were, it would be simple to demonstrate it…which of course no one does.
Try to go to molecular level, try to go to electron level. Then you can visualize (both cables and spaghetti).
In another industrial process, some filters are manufactured by extrusion. The characteristics of those filters are VERY directional. Even when using isotropic and homogeneous materials.
We think cables are very good conductors (they are), but we would use superconductors in the perfect audio system (where nobody and no instrument would be able to detect directionality or burn in). Because Cu and Ag or even Au are not perfect (and much less in alloys), we are having this discussion.
Sorry, we are trying to demonstrate burn-in here. Directionality was demonstrated one or two centuries ago.
Personally I would not be quite so dogmatic.
I can’t see a definitive reason as to why they should be directional, and nor can I see a definitive reason as to why they should ‘burn in’. Furthermore I can see a number of proposed mechanisms that I can be fairly certain can’t be the cause of each effect, I don’t believe I have exhaustively investigated every single one of the remote possibilities that could (separately or through interaction) result in these behaviours.
Ergo I don’t rule out either effect as being impossible.
How are directional effects produced in materials that are isotropic and homogeneous?
Are there some examples you can give? I’m curious.
Combining differing materials that are homogeneous and isotropic can result in an anisotropic effect across the interface, but then the material is no longer homogeneous!
I’m not ruling anything out in principle, only that people have been trying (and failing) to verify any of these claims about cables. Like, really trying. And what has consistently been found is that it makes no audible difference (and often no measurable difference either).
Just somewhat improbable
And currently inexplicable
OK, yes, not currently sufficiently consistent to be shown to be statistically significant within limitations of the tests done so far.
I can live with that!
I do not wish to comment on the possibility of future statistical information!
Self explaining picture that shows that the properties of extruded materials are directional.
Perhaps is not the best picture, sorry I am in a hurry, I have to pick up a taxi.
Answer directed wrongly but please see above.
OK, those materials are anisotropic [ diagram (g) ]
I certainly don’t have enough strength to pick up a taxi, that’s quite impressive!
Thanks. But you have a load of work to do to show that this matters to audio and that it has an effect on anything.
Thank you for the encouragement, I will try my best.
Yes, but, we will need to know the amount of time which has passed since their extrusion…we will need to take into account their entropic loss of order which was set up by the original extrusion process.
First time I can read some irony from you. But yes, I like to dig out. But my motivation was to find if theories and experiments, tests…exist and can or cannot prove the burn in cable process and explain if it can be audible.
Unfortunately no real serious research was done for now. I would be glad to find it because for me the burn in is an evidence, be it audio, digital or ethernet cables.
Of course, this is also burn-in in itself, albeit not by signal propagation. I thing this one is several orders below the burn-in by listening to music.
There will be also burn-in by solar radiation and by natural radioactivity and… Let’s factor those off.
I did my research and experimentation. 0,5 dB is a difference I can notice. Perhaps it needs a better definition, but let’s see if this can be used in a mathematical calculation.
Would be curious to see it. All the process, how you recorded, the results, graphs….