Tubes vs Solid State - Imaging, Soundstaging, 3D

I suppose the standards that are applied do correlate to some extent with human hearing rules. It would be hard to see how products could be sold if not.

What I am saying here in the last few posts is that for the most part, the measurement standards don't correlate all that well at all; about the only thing that gets much lip service is frequency response, based on the ear having response from about 20Hz-20KHz.

There is nothing in the measurements, for example, that acknowledges that the ear treats distortion as a tonality, other than 'low' distortion is supposed to be good. In practice though, it turns out that certain distortions must be very low, and others the ear does not seem to care about so much. There is no nuance in the specs!

I submit that there isn't[sic] any rules for human hearing. It's clear that very few audiophiles can agree on a regular basis when it comes to which piece of gear sounds the best, or even better.

You are confusing taste (for which there is no accounting) with actual perceptual rules, which vary over the entire population by about 1%. IOW there is a big difference here.

There are numerous examples, for example mp3s take advantage of the ear's masking rule (although not 100% successful in that regard) to reduce the amount of data storage.

"You are confusing taste (for which there is no accounting) with actual perceptual rules, which vary over the entire population by about 1%. IOW there is a big difference here."

Hmmm, not sure how far "rules" get you in lieu of "tastes" when it comes to people. I would expect one to reflect the other to some extent in general. Case by case, anything is possible.

I think another and more modern study might be called for. Technology has changed a lot over the years and peoples buying habits are the main driver. Maybe the rules get followed these days in more cases than one might thing otherwise.

I can only speak for my self. My system has NF applied and I am digging it! Then again, I am a bit of a rebel at heart. I might actually like breaking a rule or two now and then. :^)

Atmasphere, I suspect you are somewhat of a rebel at heart as well! I respect that!

All electronic components have a certain amount of noise associated with them that is additive through out the sytem. Look at the specifications of any device, solid state or tube and there are specs for the noise associated with that component. Therefore, signal or no signal, the circuit in questions will have some noise. Whether the gain in the circuit is there or not, there is noise, regardless of whether you can here it. It is measurable. The noise floor is there period. gain is added if gain devices are present and more noise is added if grounding is not good or ground loops are present. So, start off with a specific amount of noise (noise floor) of the device under test. It is there regardless. Connect this device to others and the other device's noise is also added. now you have system noise. For example. CD transport has noise A, DAC has noise B, Pre-amp has noise C, amplifiers have noise D. The total noise will be A+B+C+D. And if you have bad grounds or power line noise, then that adds also. Also, regardless of tube or solid state, a competent Engineer/Designer will design based on the noise, gain, input impedance, output impedance, load, etc. They pick electronic devices based on the load/gain characteristics and also based on the specified noise of the device. But, you get what you pay for. You want terrific gain/impedance devices? you want really low noise devices? you want devices that operate from DC to light? well, you will pay for it. This is also why some electronics costs soooo much.

enjoy

A rebel? Perhaps.
A businessman first and foremost.