Why HiFi Gear Measurements Are Misleading (yes ASR talking to you…)


About 25 years ago I was inside a large room with an A-frame ceiling and large skylights, during the Perseid Meteor Shower that happens every August. This one time was like no other, for two reasons: 1) There were large, red, fragmenting streaks multiple times a minute with illuminated smoke trails, and 2) I could hear them.

Yes, each meteor produced a sizzling sound, like the sound of a frying pan.

Amazed, I Googled this phenomena and found that many people reported hearing this same sizzling sound associated with meteors streaking across the sky. In response, scientists and astrophysicists said it was all in our heads. That, it was totally impossible. Why? Because of the distance between the meteor and the observer. Physics does not allow sound to travel fast enough to hear the sound at the same time that the meteor streaks across the sky. Case closed.

ASR would have agreed with this sound reasoning based in elementary science.

Fast forward a few decades. The scientists were wrong. Turns out, the sound was caused by radiation emitted by the meteors, traveling at the speed of light, and interacting with metallic objects near the observer, even if the observer is indoors. Producing a sizzling sound. This was actually recorded audibly by researchers along with the recording of the radiation. You can look this up easily and listen to the recordings.

Takeaway - trust your senses! Science doesn’t always measure the right things, in the right ways, to fully explain what we are sensing. Therefore your sensory input comes first. You can try to figure out the science later.

I’m not trying to start an argument or make people upset. Just sharing an experience that reinforces my personal way of thinking. Others of course are free to trust the science over their senses. I know this bothers some but I really couldn’t be bothered by that. The folks at ASR are smart people too.

nyev

@thespeakerdude ,

I have asked the the ASR admin about the brain interpreting the sound waves question and he has managed to dodge the question before. You can go and check the previous discussions from a different thread. When a person claims that "I know all that I have to know", that tells me that it is a "closed brain" which is not open to learn anything new. Search the 'Gon and you should see my interaction with him. Look - he is most likely an expert in measurements. But he is not above the scientific world which has yet to find the answers on why each human being intercept sound differently.

I think he dismisses folks who will not buy a piece of equipment once they evaluate with their ears and do not find differences with the current one. I don't want to pay my hard-earned money on something that makes no difference. Only if I find a difference will I be convinced to buy. And I don't need anyone telling me what I should like or not.

@milpai ,

I am only advocating that people behave maturely and stick to discussing audio, free from personal insults, lies and libel.

I am not sure what aspect of human hearing we do not understand you are referring to? I did a quick perusal but it is hard to make a detailed search here or at least that is a skill I do not possess yet. For understanding audio, we know a lot. However, we don't know, beyond general statements, what any one person will prefer though there are theories about environmental exposure (what those around you like) and also genetic wiring. It am not sure that is relevant though.

One statement that Amir made, was that a tube amplifier with a non-flat frequency with a particular speaker is a flawed design. I do not agree with that assessment for many reasons. First is that the resultant frequency response, in room, may be preferable, even more accurate. Second is that at an individual level, preference trumps accuracy, so the only person who can state flawed, is the final user. Last is that there are many flawed humans in the chain of musical production that all recordings are inherently flawed. We don't know what the best final playback function is, though Amir could make the argument, that on average, for that case at least, flat is best.

To the ASR crowd:

Are you using a 1KHz tone?

Do you do some basic IMD3 test?

I mean music is infinitely more complicated than that.

@amir_asr , thank you for sharing your perspectives. I have an education in computer engineering. But being an audiophile, I just don’t agree with the position that the science and measurements can totally explain our perceptions. I have a fundamental belief that science cannot explain all of the dimensions that impact our subjective interpretation of physical sound waves. Why? You have suggested folks get upset when ASR rejects a component that they subjectively praise. I think you are correct in many, many cases. It’s why people get so fired up about ASR. In my case I don’t care if ASR rejects a component that I subjectively enjoy - that doesn’t bother me in the slightest because if I enjoy it that’s all that matters to me. So why do I follow my subjective judgement over science? I simply don’t believe that science can FULLY explain, at our present level of understanding, how sound waves are subjectively interpreted by humans. Why do I believe this? My own blind testing experiments, over decades, that offer results that are not explainable. Differences in power cords, the effect of burn-in, vibration control products etc. Sure there are theories why these things make a difference even when blind testing, even with generalized theories that are proven, but to my knowledge none are proven in the specific application of HiFi audio.

My engineering buddies think I’m absolutely nuts when I say music servers and USB cables make a difference in audio, but, with their knowledge, I can’t blame them at all for coming to those conclusions, as I have the same knowledge. But the difference is, they’ve not had the blind subjective test experiences that I’ve had, which leads me to question whether science really knows everything about the manner in which humans subjectively perceive sound waves.

Without going into details that may be taboo on this board, I don’t consider myself to be a particularly spiritual person, despite the objective evidence that our universe could be part of some grand design. But if I had some sort of personal subjective experience that clarified a particular spiritual path for me, I could see myself heading down that path. But nothing remotely close to this has happened. But in the world of audio, it has! That’s why I feel we need to go beyond the science!

What we perceive through our senses is not at all a “fantasy world” as you have suggested. That “fantasy world” is actually all that we have.  Sure, measurements can tell us what is happening in the world.  But no measurement, as of yet, can explain how we perceive it.