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Master Thread: Are measurements Everything or Nothing?

And some of us simply try to mimic the inflection of the spoken word ... to hell with "gravitas". (@mhardy6647 and me , for instance.) I don't see anything wrong with that.

You are half right. Imagining how @Newman was trying to say all that gravity-enhanced shite was the really funny part.

But getting back to the science and the thread topic, I think we can science it. Can you post some audio of you speaking in title case, versus normally? Level-matched. I feel an ABX coming on.
 
Oh dear :rolleyes: ..

Newman, you could’ve produced a perfectly reasonable comment on blind testing. But instead you can’t resist turning it into an undisguised broadside against my posts.
And so, as predictable as death and taxes , it is bloated with the usual strawman and hand waving.


We rely on expert professionally conducted experimental listening tests, interpreted and analysed by expert professionals, written into high-grade papers and tested by fire among the peer group. The Science.

We don't rely on home listening of whatever construction, to test the findings of The Science, as if The Science is under review in such manner.

We don't conclude that The Science is a bit iffy, lacks nuance, or needs further work, based on our home tests not confirming The Science.

Nobody here is suggesting their personal blind tests have contributed to “The Science”
nor challenged “The Science” - and quite obviously not me.

Starting off by lobbing out a Big Fat Strawman is the sign you are not engaging in good faith.

We for goodness sake don't strut about on science discussion forums, throwing smokescreens all over statements of others that accurately reflect The Science, even going chesties with the actual scientists who wrote some of The Science and who adorn the forum with their presence, because we reckon that their summary statements on the trustworthiness of sighted listening are not right,

Not THEIR summaries.

With which my arguments are compatible.

YOUR summaries, in which you extend scepticism to the point of incoherence (and which routinely strawman my views).


and all because our personal blind-ish

“blind-ish”

The last Blind Testing results I presented on the forum had the tube and solid state preamps in a separate room from the listener, sound levels matched (reconfirmed with a voltmeter at the speaker terminals), switching randomized using a random number generator.

Would you like to explain how you know this is merely “blind-ish” instead of “blinded” listening? Why not try honest analysis in place of smirky rhetorical neologisms?

I followed Amir’s recommendations for proper blind testing, and my post explaining my methodology and results were given a thumbs up by Amir as well.

Amir and others encourage members to do blind testing, and most members really appreciate people doing so and presenting the results. Except of course if the test results comes from the diabolical MattHooper, in which case of course the results have to be undermined and belittled, in your constant dishonest attempt to paint me as ignorant or naïve on the subject of sighted bias.

and non-blind tests suggest (to ourselves at least) that we have managed to 'calibrate' our personal sighted listening to the actual sound waves.

What in the world is wrong with deciding to TEST if one’s sighted listening impressions are accurate by using blind testing??

That’s literally the kind of stuff we encourage here!

It was because I knew I couldn’t be sure I wasn’t imagining a sonic difference that I engaged in the blind test in the first place (as well as plenty of other blind tests I’ve performed). That’s what intellectual honesty looks like.

And did I, as you imply, leverage that to suggesting “ therefore all my sighted listening impressions are entirely accurate?”

Of course not. I haven’t been able to do a blind test with my tube power amps, and when discussing them here I constantly acknowledgeI can’t be certain that my impressions aren’t due to sighted biases!

And because now we don't even do the blind tests any more because we can use our 'calibrated' sighted listening to make direct observations about the sound waves themselves. LOL I mean spot the error, and maybe roll out a few synonyms for overconfidence.

The error is easily spotted: your furious production of strawmen.

As I’ve argued: if you want to have high confidence levels, you want to use scientific controls no matter what gear you are testing!

But on a pragmatic level, in which we often don’t have such controls available, we have to have pragmatic justifications. As I pointed out here and which you have not refuted.

As Dr Toole agrees, scientific controls are always better, but that doesn’t mean sighted listening is useless.

Therefore, any claims of our fallible perception is going to have to include and account for successes as well - where our sighted inferences are not useless.

And I have given plenty of examples that you failed to address.

1. Take someone like Erin from Erin’s audio corner. He listens to loudspeaker first, taking note of the characteristics in sighted listening conditions and then measures. His sighted listening impressions have been most often confirmed to be accurate “ hearing the actual sound waves.” When he identifies for instance, an emphasis in the highs, a scoop out in the lower mid range, an emphasis in the midbass, Narrow or wider dispersion, etc, it typically shows up in the measurements. And he often identifies the correct specific frequency range as well.

Please explain to us, if sighted listening is so totally untrustworthy, how this could be?

And why, if you have routinely demonstrated an ability to accurately identify real sonic characteristics this way, you couldn’t be justified in presuming your next sighted listening speaker evaluation is
“ likely correct” (With the caveat it hasn’t been confirmed yet)?

2. This skill is hardly a novel one. If you’d had any experience in the professional sound world, you would’ve seen how experienced music and post production sound mixers are quite adept, under their usual “ sighted working conditions,” at quickly identifying Sonic issues, and quickly applying EQ To those frequencies to fix the issue or manipulate the sound.

How exactly would this work, under your hyper sceptical view of the untrustworthiness of sighted listening?

3. Consider Floyd Toole’s recommendation for the use of tone controls. He suggests having them handy to compensate for poor mastering or mixing (for instance adding some base to a thin master) or to adapt to personal preference.

Now, do you think that Dr Toole is suggesting these tools are to be used to
“ adjust imaginary sounds?”

Of course not. The recommendation are clearly aimed at REAL sonic characteristics “real sound waves” that we will identify in the normal course of our sighted listening while at home. It necessarily grants some credence to justifying that we are identifying real Sonic differences, and fixing those differences, in the context of sighted listening.

If this weren’t the case, and sighted listening was so insufferably unreliable, it would be like recommending to a blind personyour TV should have colour controls in the case that you find your TVs image to be too red or green tinted.”

At some point, you have to come back to the real world and start making sense as to how far you can push your scepticism. Ignoring these issues and constantly retreating to slogans about sighted listening being untrustworthy is a failure to grapple with inconvenient realities.

We do rely on the same process as the first paragraph to bring new expert insights, ie advances, to The Science. And if such advances are not forthcoming, we shrug our shoulders and move on to areas where advances are being made: we don't get all frustrated about it and start pumping smoke into the room.

The only “ smoke” being constantly pumped into this room comes from your furious torching of strawman.

Simply making bald pronouncements to the crowd, misrepresenting and maligning someones viewpoint, is not taking the highroad.

To do so would be a disservice to everyone in the room, from neophyte to luminary.

cheers

It does not serve neophytes or luminaries or anyone else on the forum to constantly engage in bad faith rhetoric, such as your post here, not to mention so many other posts.

Newman, as I have often said, I value many of your posts on the forum. You make some terrific contributions. I agree with so much of what you write. But for some reason, your commitment to truth seems to falter when interacting with what I write.

If at some point you want to engage in a reality-based discussion, which includes caring about the truth of what people actually write and addressing their real arguments, I’m sure I’m not the only one who would be grateful for this.
 
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Hello there!

New member (presented myself here)

I have to say I am a little disappointed to see philosophy pretty much completely absent of the discussion. At the very least, on the epistemological level. It seems, for instance, that many think we can refer to Science – as if Kuhn or Feyerabend don’t even exist!

I’m not saying one must agree with them, but if one is not themself a researcher in epistemology, I don’t see how they could take side so categorically in the debate on falsificationism and act like « The Scientific Method » is the end all and be all of any relevant approach to knowledge.

We don’t expect an art historian specialised in renaissance paintings to believe they discovered the essence of Art or pretend they can understand perfectly medieval Japanese sculptures as well as outsider music and 21st century french poetry.

One can be an excellent scientist and still lack epistemological understanding. This is why epistemology exists as its own discipline: because science is neither transparent to itself nor a unified practice. Different goals necessitate different methods. I think this is sometimes the issue here: arguing over methodologies when the finality hasn’t been clarified prior.

The question the thread raises is implicitly an axiological one and, in that regard, demands more than a binary opposition between « Subjectivists » and « Objectivists ».

One message here and there pops up, raising philosophical issues about « the thing in itself » or « perceiving reality as it is » – but just a wikipedia page or a Ted Talk… Quite disappointing! Why not be as demanding with these questions as you are with the methodologies of blind testing?

There seems to be something quite ironic with how quickly empiricism can become idealism. If measurements are everything, then how can one distinguish the two? You know there’s a subreddit entitled « do you believe in ASR? » depicting the website as a cult! I couldn’t help but laugh and think about Nietzsche’s view of science as new form of religion.

I sometimes want to joke: « true audiophiles don’t own gear. They just read the score ».

And if measurements aren’t everything, what value should we give to the experience? How to define it? Very few are actually tackling this question seriously (@MattHooper, @tmtomh and @Galliardist come to mind spontaneously). Their posts are the only ones that seem to acknowledge a third way: actual pragmatism (Dewey’s or James’s).

Some oppositions here remind me of some debates in the skeptical realms online where they see reductionism as the only reasonable way to think and where they confuse atheism with the proof of God’s inexistence.

I’m always confused as to how science – a deeply humbling project – leads certain to such rigid confidence.

This is already a very long message so I should stop. If anyone is available for some email interviews, please let me know, as I will want to conduct some next month (as said in my presentation, I’m writing a paper on the topic).

I’ll finish this message with a Neils Bohr anecdote that, I think, fits perfectly this thread:

It’s said that a friend visited the home of the prominent physicist. The visitor was surprised to find a horseshoe above the front doorway of the scientist’s abode.

The visitor asked the physicist about the purpose of the horseshoe while expressing incredulity that a man of science could possibly be swayed by a simple-minded folk belief. The physicist replied:

« Of course I don’t believe in it, but I understand it brings you luck, whether you believe in it or not. »


[EDIT: I believe the anecdote to be funny and indirectly capable of making us feel something of an intuition on the topic even if it is entirely made up – Whether it about Neils Bohr or my cousin doesn't change its perceived value as a thought/intuition inducing story]

Peace!
 
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Finishing an admonishment on the application of science with a disputed anecdote: fitting.
 
Finishing an admonishment on the application of science with a disputed anecdote: fitting.
Had to add an edit then, if you thought I posted it as an argument from authority

as for "admonishment on the application of science": I believe you have entirely misunderstood the meaning of my post. I don't expect to be understood by everyone though I'm always disappointed when I fail to have the true meaning of what I try to say understood. I'm sorry you've perceived my message as such a dumb caricature. I hope my future posts will convince you more.
 
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I always said "to measure is to know" but I still believe correct and complete measurements can be a complicated subject. Magic I do not believe in!

We tend to look at anecdotal listening session 'tests' or reports that make claims that are as unlikely as me being able to run a 2 minute mile, as needing magic to be true.

Hard part is convincing people that our brains are very tricky, and it makes up a lot of stuff as we go through life. It's just part of being human, and we can't just decide to ignore our natural bias, we have to deal with it through the use of basic controls so that anecdote can become actual evidence.
 
I’ve had a long interest in philosophical subjects, so a bunch of your post resonates with me. A snapshot of my leanings here

I have to say I am a little disappointed to see philosophy pretty much completely absent of the discussion.

I have argued that the division between
“ subjectivists” and “ objectivists” as those clashes are typically seen in high-end audio is an epistemological division. The subjectivist approach holds a theory of knowledge whereby the performance of audio gear is most reliably known through informal subjective impressions. The objectivist approach by contrast incorporates scepticism of our informal subjective impressions, and therefore seeks outside objective confirmation and/or or controls for bias effects, as a route to more reliable knowledge.

I believe this epistemic division best characterizes and explains the type of clashes you see among audiophiles.

One can be an excellent scientist and still lack epistemological understanding. This is why epistemology exists as its own discipline: because science is neither transparent to itself nor a unified practice.

Yup.

if you don’t realize this, you can end up question-begging and blind to your own interpretive role when citing “The Science.”
It can feel like just “ citing The Science” automatically puts you in the right and on the side of logic and evidence, when in fact, you can be blind to the type of dubious inferences you are making from The Science.

I’m sure you have observed some of that playing out in this thread and others occasionally. :)

Though I find this place to be quite wonderfully populated with very smart people (smarter than I am !) and many balanced views.
And if measurements aren’t everything, what value should we give to the experience? How to define it? Very few are actually tackling this question seriously (@MattHooper, @tmtomh and @Galliardist come to mind spontaneously). Their posts are the only ones that seem to acknowledge a third way: actual pragmatism (Dewey’s or James’s).

Yup. Seems to be any sound epistemology has to incorporate pragmatism, given our lack of omniscience.

One thing: I would want to be careful about signing onto a proposition like
“ measurements aren’t everything” if only because it sounds so similar to the type of bogus arguments subjectivist audiophiles have made against the relevance of measurements.

But I think a properly made argument can sign onto that, which maintains the importance of measurements and doesn’t legitimize mushy, thinking or woo beliefs.

Some oppositions here remind me of some debates in the skeptical realms online where they see reductionism as the only reasonable way to think and where they confuse atheism with the proof of God’s inexistence.

Ugh. I’m currently battling a swamp of naïve reductionist arguments on another philosophy oriented forum. Maddening. Especially when deep intuitions are involved.
(Think: free will etc)

This is already a very long message so I should stop. If anyone is available for some email interviews, please let me know, as I will want to conduct some next month (as said in my presentation, I’m writing a paper on the topic).

I’d probably be up for that. Sounds interesting.

Having spent many long years in the trenches of philosophical debates, be it on forums, podcasts or wherever, it led me to develop some habits which I can understand can be annoying in a forum like this. I’m used to having people with formidable philosophical chops trying to tear down my arguments and worldview step-by-step to the very core. It can be quite humbling.

That means you really gotta come to those discussions with all your ducks already in a row, in terms of the coherence of your argument and how it fits into any wider worldview. So its just a habit of this point to do a coherency check when somebody (including myself ) makes an argument in any realm, audio or otherwise: to look at the implications of the argument, and how it spreads beyond the current topic at hand, and how well it holds up in the wider context of beliefs and accepted principles. (a bit of a Quinean gut check as it were.) Fairly often people can be arguing in a bubble, thinking they have an obvious truth in the subject at hand, without having double checked the wider implications of their particular argument.

I very much enjoy when somebody can point out when I am making similar errors.

But again, I recognize this can be somewhat annoying sometimes - the stuff of gadflies - on a forum where maybe people just wanna kick back and talk about audio gear, discuss the measurements, etc.
 
«The Scientific Method » is the end all and be all of any relevant approach to knowledge
It’s likely not. But from a purely practical perspective, I know of no other method that is more successful at explaining and predicting the physical world. Philosophy that doesn’t help improve the method is of no interest to me personally. I’ll stick with Science and Scientific Method, flawed as it is, until there’s something provably better.
 
And if measurements aren’t everything, what value should we give to the experience? How to define it?

One fun question that can be derived from that is just : why care about the measurements at all?

Why not just evaluate loudspeakers in the actual use case: sighted listening?
If ultimately, your perception is a combination of the sound and whatever other biases you bring or experience, then why appeal to measurements derived from blind listening, which ignores the real world influences you will be experiencing? Just purchase the loudspeakers that please your perception in sighted listening, because you’ll never get “ past” that perception (to the thing as it is), so your sighted perception IS the reality of how you will perceive the sound.

I think a fairly reasonable case can be made for purchasing gear along those lines, insofar as one advisedly allows the role of bias.

For instance, as I’ve said before: I don’t know for sure that I am not suffering from some form of expectation effect or some other bias which causes me to perceive the sound of my tube amps the way I do. And how they seem to sound more pleasing when to me than the solid state amps I’ve tried.

On the other hand, if the particular pleasing sonic qualities I seem to perceive is a bias effect, then that is a fact about how my perception is working. And I can incorporate that fact into my decision to hold onto these amplifiers. In other words, The bias effect has been a reliable one over the decades that I have owned these amplifiers, so I am fine with availing myself of that effect. I can do this without having to make any absolute commitment to my belief in how the amplifier really performs, and without making objective claims that anyone else ought to accept.

Our experiences are influenced by any number of factors, and it can be reasonable to take advantage of that fact.

At least for somebody comfortable with that.

On the other hand, as I’ve defended many times, it is also entirely reasonable for somebody to conclude that appealing to certain measurable criteria is the way to go.
I’ve argued for the relevance of data from blind listening studies in guiding a purchase.
And for neutrality and high Fidelity in gear.

Different approaches can suit the different personalities, proclivities, and goals of different individuals.
 
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It’s likely not. But from a purely practical perspective, I know of no other method that is more successful at explaining and predicting the physical world. Philosophy that doesn’t help improve the method is of no interest to me personally. I’ll stick with Science and Scientific Method, flawed as it is, until there’s something provably better.

That seems to me, generally speaking, the germ of a fine personal philosophical defence for science in a nutshell.
 
If ultimately, your perception is a combination of the sound and whatever other biases you bring or experience, then why appeal to measurements derived from blind listening, which ignores the real world influences you will be experiencing?

Our perception is a combination of the sound, our biases, and a control element. That control element is evidentiary; it's based on science.

Let's explore this a bit differently. Our perception of sound is simply one of our perceptions. We also have sight, touch, taste and smell. I have seen each and every one of these perceptions fooled ... once with horrible consequences. (Eating poison mushrooms.)

There have been many optical illusions posted in various threads on this site. Many people didn't believe them until the method for overcoming them was published. Their biases were so strong, that they would not otherwise have believed that the illusion was actually that ... an illusion.
So seeing was not enough. Biases and experience were not enough. Only impartial and dispassionate science helped them see the truth of the illusion.

So measurements and science saved the day. Unfortunately the people who ate those mushrooms that they thought were OK and actually proved to be poison depended on sight, touch, smell, biases and experience ... and they're now dead.

Admittedly, this hobby isn't going to kill you. :rolleyes: But that's not my point. My point is that we need more than our senses and our experience to navigate the swamp of sensory evaluations.

We need science, discipline and exactitude. :)

Jim
 
I like apples, and I like tomatoes ... just not together. :) And are you sure that it's an ABX test that you feel coming on?
Jim

No Mom's Green Tomato-Apple Pie for you?

1729640582060.jpeg
 
It’s likely not. But from a purely practical perspective, I know of no other method that is more successful at explaining and predicting the physical world. Philosophy that doesn’t help improve the method is of no interest to me personally. I’ll stick with Science and Scientific Method, flawed as it is, until there’s something provably better.
That seems to me, generally speaking, the germ of a fine personal philosophical defence for science in a nutshell.
I’m always confused as to how science – a deeply humbling project – leads certain to such rigid confidence.

Yes, it shouldn't, but I keep in mind that many (my guess is more) participate here from an engineering background than a scientific one. Generalising of course (some do both, or neither) but I'll argue that scientists formulate hypotheses about the universe, then conduct experiments to falsify them (or not) while engineers learn complex rule-sets, than apply them to solve practical problems. When less aware participants here invoke (title case incoming) "The Science" they often mean "The Rules". Which is my take on why our irascible friend often comes across as a scold.
 
OK, this is fun. Keeping in mind that I have agreed there are reasonable counter arguments to the “ just use sighted listening” idea I floated….

I’ll just prod a bit on this.

Our perception is a combination of the sound, our biases, and a control element. That control element is evidentiary; it's based on science.

How do you see this working specifically?

Let’s say you have a pair of loudspeakers that you are listening to in sighted listening conditions. So you have a perception of their sonic profile. And let’s say there is some bias effect shaping the perception. Maybe you think voices sound ultra natural on them or something, or whatever.

How does the “ control” you are thinking of actually change that perception, so that with the control it will now sound different?

And why do you want it to sound different, if you are already pleased with your perception of the sound?


There have been many optical illusions posted in various threads on this site. Many people didn't believe them until the method for overcoming them was published. Their biases were so strong, that they would not otherwise have believed that the illusion was actually that ... an illusion.
So seeing was not enough. Biases and experience were not enough. Only impartial and dispassionate science helped them see the truth of the illusion.

Yes, I already brought up the analogy to optical illusions earlier. And is interesting to ponder the implications of how you come to know something was an illusion.

So take the classic checkerboard illusion:

1729646536896.png


Due to perceptual heuristics and built-in expectation effects, even though square A and B are exactly the same shade, we strongly and helplessly perceive B as lighter than A.

So how can we find out the truth that it’s an illusion? One way is as you say
“ measurements to the rescue.”

Without changing anything in the illusion itself, you can objectively measure the luminance of each square. And then the objective numbers tell you the squares are exactly the same values and has the same brightness.

But interestingly, what you get with this combination is an intellectual knowledge about the truth the squares are the same brightness, but the very strong perception that they are different remains!

Another way of discovering it is an illusion is to make some changes in the variables involved in the illusion. Where you actually alter or take away some of the bias effects that are causing the illusion, as in this video;


No measurements required, it’s just removing variables and relying on our perception to discover the truth.

(and as I said before, this would show why appealing to such optical illusions to make an sceptical account of the untrustworthiness of our vision would not make sense, since The steps involved discovering it is an illusion actually relies on the trustworthiness of our vision!)

An important point here is that if you are going to own a copy of the checkerboard illusion, a painting of it that you put on your wall, even if you know the measurements you will still perceive the illusion. And if you are not going to actually engage in changing the variables in the painting, so as to reveal the illusion, you will still be seeing that illusion.
In either case, knowing it’s an illusion doesn’t change your perception - it’s going to look how it looks due to the bias effect!

OK, so how does this relate to your and my argument here?

It’s analogous to measurements and/or blind testing to uncover “ illusions” or errors in our perception in regard to audio gear.

So let’s say you have a pair of loudspeakers that you formed an impression of under sighted conditions. And maybe you have formed the impression that they are particularly natural and highly linear sounding, which you think is what creates the natural sounding vocals.

But is this perception accurate?

Measurements to the rescue!

You could take measurements of the speakers (or maybe very good in room measurements as well well) and discover there is a pronounced “BBC” type dip between 2k and 4K. Not as linear as you perceived! (this is just a quick example I thought of there’s probably better ones.)

However, whatever the measurements show you, you perceive the speakers as you perceive the speakers anyway because in your normal listing the bias effect is in place. Just like in the checkerboard illusion after you’ve objectively measured the squares, it doesn’t do away with the illusion. Whatever bias effect was happening would likely remain.

And IF THAT IS THE CASE even after you know the measurements, why care about the measurements? Ultimately, you were going to perceive the speaker as you perceive it in sighted conditions, even if you now know intellectually otherwise. Just like if you were hanging the checkerboard illusion on your wall.

OK, what’s another way of breaking through an illusion and discovering a bias effect.

Blind testing !

This is like the second version of discovering the checkerboard illusion, where you control for some variables, take out the variables that are causing the illusion, and then you can actually directly perceive the reality.

So you start with an illusion - a bias effect in sighted conditions when listening to loudspeaker or comparing loudspeakers.

Then using blind testing you remove some of the variables, causing the misperception. You remove the visuals or knowledge of what you are listening to. And just as you can accurately perceive the real brightness of the squares in the checkerboard illusion, now, under blind testing, you can actually perceive the sound coming from the loudspeaker, and it sounds somewhat different now.

Controlled perception to the rescue!

But what are the consequences for choosing the speaker?

Well, are you going to be listening in a situation in which you are controlling for bias?
If not, why expect to perceive the sound in the same way as you do under blind conditions?

It’s the same as if you are hanging the checkboard illusion on your wall and not messing with it. You’re going to be experiencing the bias effect in your perception of loudspeakers when listening normally.

Therefore, once again: why care about either measurements or the results of blind testing?

Either way of knowing your perception is distorted will not change the outcome of how it “ sounds” to you.

So why not just skip measurements and blind testing and enjoy the illusion as it’s going to happen and you’re real world, listening scenario?

What say you? Does this not speak to your “ control element,” undermining its relevance?

(I’ve already expressed my own solution to make sense of all this many times before)
 
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Measurements do not say much about perceived 'sound quality'.
Measurements can say something about signal fidelity which is an entirely different matter and what ASR is mostly about.
In general, measurements have to be really bad for that to become audible in well performed blind tests (which are very difficult to do properly).
There usually isn't any clear relation with subjectively determined 'sound quality'.
I believe this depends on which measurements we are talking about. A very high RT60 in a listening room for example would be a strong indicator of perceived bad sound.
 
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I seek the closest approach to the recording that I can achieve. That becomes most clear with tests and measurements, and not by use of my biased perceptions.

But what does it matter if you’re speakers are producing “ the closest approach to the recording” if you will only be hearing it “ through your biased perceptions?”

I mean, It would be like listening to the most accurate system in the world, but over YouTube on your laptop. You’re going to hear what your laptop does to the sound not with the speakers are actually doing. Likewise, if your perception is that biased, you are going to be hearing what your biases do to the sound not what the speakers are actually doing.


Some people may want it to sound different, and some may not. It depends on what you seek.

But you don’t have a choice. If your biases mean your perception is that unreliable you have to appeal to measurements, then doesn’t that say you are going to be hearing through your biases under your normal listening conditions? Do you think you can turn them off?


Not only that, but being "pleased with the perception" can change over time. It can change when you move to a different house or apartment. It can even change if you remodel the room where you listen. Understanding tests and measurements will give you an accurate idea of what the DUT is capable of, so that as your perceptions change under those circumstances, you know that a change is not due to the DUT, but the changed environment.

Sure, but whether your biases change or not, you are still listening to your biased, perception of the sound and not “ the actual sound” that the measurements deliver.

Unless of course, you think sighted bias is not that strong?


The rest of your post is TLDR.

OK, fair enough.

I wish I had a heads up you don’t read longer post but that’s OK now I know. I was thinking given your bringing an optical illusions you might’ve appreciated the illustrated examples. Oh well…
 
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