Dear Mosin: +++++ " True, but the rub is in what is measured, and how it is measured. Let's use speed control as an example. I make a turntable that is "speed accurate" to at least one part per million, which is the theoretical limit that can be achieved with an idler type drive due to the inherent tracking error of an idler wheel. I know that sounds impressive, but what does it tell us? The answer is not much, really. Why not? That is because such a measurement is an average. " ++++
yes but then you have to go on the whole TT design about that inertia you are talking about to mantain always the speed accuracy. All these is clear and when that is achieved then we have accuracy all the time it does not matters stylus drag or problems in the elcetric source or whatever.
That kind of accuracy ( between many other things in the TT design. ) helps to have or approach for neutral performance target.
Seems to me that in all audio orders/items the accuracy word is an eveil word a forbidden word when accuracy is the norm that moves all the Universe and moves inside the Mother Nature.
The Earth planet spins around the Sun with absolutely accuracy that with out it the Earth could be burning or a celestial piece of ice. With out accuracy the perfect equilibrum that exist in the Universe fall down and collapse.
With out the kind of accuracy that has the Earth " forces/energies " the equilibrum will collapse too and the sea water ( example ) could goes six meters high.
When a lioness is hunting every single step on that hunting must be accurate to have success and the lioness knows a lot about accuracy and when non-accurate it fail on the hunting ( 60% of the time. ).
As with those examples there are " millions " on every day stages that its behavior foundation is accuracy as the human been organism: our heart or lungs works with exceptional accuracy as any other of our organs/glands.
Accuracy is ne name of the Phisycs Laws or Mathematics. Accuracy is the foundation and prevail in all life stages all over the Universe.
Your example: +++ " I make a turntable that is "speed accurate" to at least one part per million, which is the theoretical limit that can be achieved with an idler type drive " ++++
speaks of accuracy.
Why no one in audio accept or wants to speaks about accuracy?, when is the norm/rule elsewhere.
In a phono cartridge accuracy is showed at different stages: cartridge tracking abilities makes a difference between cartridges because : how accurate the cartridge track the grooves makes those differennces. At other stage we can see how accuracy is part of a cartridge design: how accurate the cartridge can convert the stylus/cantilever movements on MUSIC.
In a phono stage we can have different levels of accuracy in the RIAA eq. due to the deviations in every single phono stage from the RIAA eq. standard.
Why are we looking that our cartridge and tonearm stay matched?, because the quality performance will be more accurate and neutral that if not!!!
I can follow mention hundreds of examples how accuracy lives inside any audio item design, so why not name it wioth the name that belongs to all those: ACCURACY.
Even each one ears/body has different accuracy level.
Neutrality has a hard relationship with accuracy and is way different from that " natural " that Dkarmely mentioned.
In your post: +++ "
"speed accurate" to at least one part per million ... " +++
the word accurate you writed inside quotation marks, why? when you achieved the limit of idler drive mechanism. Why that " fear " to name things as they are!!!!!
IMHO even if you audio item designers ( not all. ) preclude the use of accuracy/neutrality each single step in your designs ( not all. ) carry on the mark of: accuracy/neutrality even if you can't achieve it but you work for it in each single step in a TT design ( or other audio item) because I can't think and make no sense that a TT designer can design the plinth or arm board with out accuracy and dead neutral as targets.
Of course that all of you can follow denyying: ACCURACY AND NEUTRALITY with out no single reason.
Agree with you that today tipical measurements ( I posted ) can't tell us all thye history but today those kind of measurements is all what we have and for good or not that's all what we have and a useful tool along our listener experiences that through many years we developed several abilities and one of that was to be to have and discern more accurately with a better understand what is wrong or what is good more that what we like.
Many os us like wrong or average " things/colorations " but this is not the whole audio subject
I try every single day to learn for I can improve my awareness on accuracy and neutrality.
Of course that any one of you can have way different targets.
Regards and enjoy the music,
R.
