Interesting info re: digital cable "deniers"

Michaels HiFi

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It's interesting to watch on the forums people who have never actually used their ears say digital cables CAN'T make a sound difference as they are "only 1's and 0's" and any who claims there can be a difference is a "fraud".

I know I've been on the receiving end of plenty of "professional A/V installers" on my steaming test videos claiming they are experts and there simply is no difference.

Puma Cat has shared a link to a white paper that was very interesting and explained the concept of ramp up time and noise.

I came across this the other day and felt it was another great short explanation that unfortunately many will still choose to ignore. I know so very little about the true technical of digital (other than it does NOT all sound the same), so appreciate easy explanations like below:

From "There's no Such Thing as Digital: a Conversation With Charles Hansen, Gordon Rankin, and Steve Silberman" by Michael Lavorgna, AudioStream June 24, 2013.

Michael Lavorgna: It's common for people to envision and represent a digital signal as a series of 1s and 0s. As such, there's really no room for error, at least according to this binary theory. Is a digital signal simply a series of 1s and 0s?

Charlie Hansen: Unfortunately not. The "1"s and "0"s are just abstractions that are easy to think about. But in the real world, something real needs to represent those two abstract states. In modern digital electronics, we have almost universally chosen a voltage above a specific level (that varies from one "family" of electronic parts to another) to represent a "1" and a voltage below a different specific level (that again can vary) to represent a "0".

In the real world, those two voltages are not the same, so there is a "grey" zone between the "black" of the "0" and the "white" of the "1". Also, it takes time for the signal to change levels, and the time required to do so can depend on dozens (or even thousands) of other external factors.

All of the problems with digital are analog problems.
 
"It's interesting to watch on the forumspeople who have never actually used their ears say digital cables CAN'T make a sound difference as they are "only 1's and 0's" and any who claims there can be a difference is a "fraud."

Well, most of the vast majority of those folks are amateurs and have virtually no professional education, scientific or engineering training and domain expertise with respect to digital audio (or 'analog audio' as well, for that matter). If you asked them what a "transfer function" was, they would look at you blankly, let alone understand that EVERYTHING is a transfer function.

Charlie, Gordon, and Steve are 100% correct, and these guys have the domain expertise to actually know what they're talking about. Gordon, in particular, is one of the "luminaries" of digital audio.

As is John Swenson, who has designed the UpTone products, e.g. EtherREGEN. John worked for over 40 years as a professional Ethernet enginerer for Broadcom and Cisco. He also really knows WTF he's talking about.

Again, I really encourage folks here to read John's white paper. He discussses the impact of low- and high-source leakage impedance current, threshold jitter, and phase noise. ALL of these have a discernable and audible impact on audio quality.
https://cdn.shopify.com/s/files/1/0660/6121/files/UpTone-J.Swenson_EtherREGEN_white_paper.pdf?v=1583429386

Some folks think the Universe is simply f=ma. It isn't, it's Ĥψ=Eψ. Just ask Sean Carroll.

And it doesn't care one bit about people's...feelings.
 
Ugh…. This topic.

I applaud anyone who wants to go toe to toe with the na-sayers because, and frankly their obstinance obfuscates the basic reality that everything matters. To what extent can certainly be an open debate and I’m not convinced some of the differences are as flushed out on some systems as others ( don’t read that as expensive vs not expensive systems)

Good luck guys, this is the Mount Everest of cable debates.

In the meantime, you will be prying my ( ridiculously expensive) high end ethernet cables out of my dead hands . They matter
 
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Hey ADCO,

Unfortunately there is no discussion nor convincing the nay-sayers. It's not worth the time or effort to try and converse with them as they really just don't care. That's OK - that is their right.

I only thought it was a nice basic explanation of the technical which is why I shared.

I'll be right next to you with the cables in the hands! LOL
 

Yup! John has got it goin' on. One of the most knowledgeable and truly experienced people I know of in this domain. His expertise come from...>40 years professional experience in this domain. Funny how that works....😜😎
 
It's interesting to watch on the forums people who have never actually used their ears say digital cables CAN'T make a sound difference as they are "only 1's and 0's" and any who claims there can be a difference is a "fraud".

I know I've been on the receiving end of plenty of "professional A/V installers" on my steaming test videos claiming they are experts and there simply is no difference.

Puma Cat has shared a link to a white paper that was very interesting and explained the concept of ramp up time and noise.

I came across this the other day and felt it was another great short explanation that unfortunately many will still choose to ignore. I know so very little about the true technical of digital (other than it does NOT all sound the same), so appreciate easy explanations like below:

From "There's no Such Thing as Digital: a Conversation With Charles Hansen, Gordon Rankin, and Steve Silberman" by Michael Lavorgna, AudioStream June 24, 2013.

Michael Lavorgna: It's common for people to envision and represent a digital signal as a series of 1s and 0s. As such, there's really no room for error, at least according to this binary theory. Is a digital signal simply a series of 1s and 0s?

Charlie Hansen: Unfortunately not. The "1"s and "0"s are just abstractions that are easy to think about. But in the real world, something real needs to represent those two abstract states. In modern digital electronics, we have almost universally chosen a voltage above a specific level (that varies from one "family" of electronic parts to another) to represent a "1" and a voltage below a different specific level (that again can vary) to represent a "0".

In the real world, those two voltages are not the same, so there is a "grey" zone between the "black" of the "0" and the "white" of the "1". Also, it takes time for the signal to change levels, and the time required to do so can depend on dozens (or even thousands) of other external factors.

All of the problems with digital are analog problems.

Are you open to the counter-argument on this issue? If so:

Is Digital Audio Transmission Really Analog? - YouTube


The thing is, beyond the technical back and forth, someone could actually demonstrate a sonic difference between a boutique digital cable and a properly functioning cheap cable, by seeing if...only using their ears not their eyes...they can reliably identify between them in blind test.

For some reason this type of evidence seems to be lacking...which is further grounds for skepticism.

It reminds me of before we made the change to HDMI for TV and home theater equipment. There were lots of purely subjective "reviews" of analog video cables, naturally things like Component cables by Nordost claimed to "make obvious differences in color saturation, picture sharpness and contrast."

But those are eminently measurable qualities. Increased sharpness/resolution effects would show up on resolution test patterns, and any decent calibrator has equipment that would immediately detect changes in color saturation/gamma/contrast. And more reliably than the human eye. That's why, after all, they use such equipment. And yet those claims were NEVER accompanied by the type of objective evidence one would expect. And you don't see professional calibrationists saying they had to compensate their calibrations for the "obviously different contrast/color/sharpness" in higher end video cables.

Similarly, recently on another forum an audiophile swore his new $1,000 HDMI cable improved the color/clarity/contrast of his image over his previous HDMI cable. It didn't matter how many technical explanations were cited showing the type of changes he felt he saw was literally impossible, even quotes from the technical head of the HDMI committee, nothing could budge his view "I know what I see!"

This is essentially where one gets stuck when one party is completely committed to the truth of their subjective impressions. No counter evidence need apply.

(BTW, I thought I was seeing differences in high end video cables too, e.g. Nordost vs cheaper cables. But understanding the nature of sighted bias I managed to blind test between them and then...no discernible difference. As technical theory would predict. It's sobering to really put one's perception to such tests).

Personally, I would welcome a digital cable that improved the sound of my system. But...I prefer to wait for better evidence than audiophile anecdotes before I spend time and money on such a purchase.

Cheers.
 
Ugh…. This topic.

I applaud anyone who wants to go toe to toe with the na-sayers because, and frankly their obstinance obfuscates the basic reality that everything matters.

Everything doesn't matter. It really doesn't. Ask any good engineer. There will be a point at which "doing more" will not get you "more."

"Everything" can't matter, unless human perception was infinite in it's sensitivity. But it's not. We know we have limitations, that's why humans invented instruments to see/hear/detect things our senses can not and/or with better reliability. You really can't see X-rays with your naked eye. And you really can't hear some levels of distortion once low enough (even though it can be measured). We don't have Super Hearing.

What IS closer to "infinite" is our imagination. That really is the only thing that could make sense of the "everything makes a difference" mantra, since we can always imagine a difference.

No, that all doesn't mean "every audiophile is just imagining things." Obviously not. But rather, some audio claims (like in most hobbies) veer in to the Extraordinary Claims side of the ledger. It's no problem for any individual audiophile if he/she wants to ignore measurements or the relevance of blind testing or the fact we really can imagine differences pretty easily and that's a variable to consider (especially with technically dubious audiophiles claims). But, lots of audiophiles (it seems a growing number) are ok being a bit more demanding of evidence for some of the stuff often taken for granted in high end audio.

Cheers.
 
Are you open to the counter-argument on this issue? If so:

Is Digital Audio Transmission Really Analog? - YouTube


The thing is, beyond the technical back and forth, someone could actually demonstrate a sonic difference between a boutique digital cable and a properly functioning cheap cable, by seeing if...only using their ears not their eyes...they can reliably identify between them in blind test.

For some reason this type of evidence seems to be lacking...which is further grounds for skepticism.

It reminds me of before we made the change to HDMI for TV and home theater equipment. There were lots of purely subjective "reviews" of analog video cables, naturally things like Component cables by Nordost claimed to "make obvious differences in color saturation, picture sharpness and contrast."

But those are eminently measurable qualities. Increased sharpness/resolution effects would show up on resolution test patterns, and any decent calibrator has equipment that would immediately detect changes in color saturation/gamma/contrast. And more reliably than the human eye. That's why, after all, they use such equipment. And yet those claims were NEVER accompanied by the type of objective evidence one would expect. And you don't see professional calibrationists saying they had to compensate their calibrations for the "obviously different contrast/color/sharpness" in higher end video cables.

Similarly, recently on another forum an audiophile swore his new $1,000 HDMI cable improved the color/clarity/contrast of his image over his previous HDMI cable. It didn't matter how many technical explanations were cited showing the type of changes he felt he saw was literally impossible, even quotes from the technical head of the HDMI committee, nothing could budge his view "I know what I see!"

This is essentially were one gets stuck when one party is completely committed to the truth of their subjective impressions. No counter evidence need apply.

Personally, I would welcome a digital cable that improved the sound of my system. But...I prefer to wait for better evidence than audiophile anecdotes before I spend time and money on such a purchase.

Cheers.

Time to put on your asbestos underwear.
 
Are you open to the counter-argument on this issue? If so:

Is Digital Audio Transmission Really Analog? - YouTube


The thing is, beyond the technical back and forth, someone could actually demonstrate a sonic difference between a boutique digital cable and a properly functioning cheap cable, by seeing if...only using their ears not their eyes...they can reliably identify between them in blind test.

For some reason this type of evidence seems to be lacking...which is further grounds for skepticism.

It reminds me of before we made the change to HDMI for TV and home theater equipment. There were lots of purely subjective "reviews" of analog video cables, naturally things like Component cables by Nordost claimed to "make obvious differences in color saturation, picture sharpness and contrast."

But those are eminently measurable qualities. Increased sharpness/resolution effects would show up on resolution test patterns, and any decent calibrator has equipment that would immediately detect changes in color saturation/gamma/contrast. And more reliably than the human eye. That's why, after all, they use such equipment. And yet those claims were NEVER accompanied by the type of objective evidence one would expect. And you don't see professional calibrationists saying they had to compensate their calibrations for the "obviously different contrast/color/sharpness" in higher end video cables.

Similarly, recently on another forum an audiophile swore his new $1,000 HDMI cable improved the color/clarity/contrast of his image over his previous HDMI cable. It didn't matter how many technical explanations were cited showing the type of changes he felt he saw was literally impossible, even quotes from the technical head of the HDMI committee, nothing could budge his view "I know what I see!"

This is essentially where one gets stuck when one party is completely committed to the truth of their subjective impressions. No counter evidence need apply.

(BTW, I thought I was seeing differences in high end video cables too, e.g. Nordost vs cheaper cables. But understanding the nature of sighted bias I managed to blind test between them and then...no discernible difference. As technical theory would predict. It's sobering to really put one's perception to such tests).

Personally, I would welcome a digital cable that improved the sound of my system. But...I prefer to wait for better evidence than audiophile anecdotes before I spend time and money on such a purchase.

Cheers.

Hi Matt,

I respect everyone's opinion. Unfortunately it is the Anti-Ear crowd that attacks those with ears with a vengeance and viciousness. I've had to block quite a few of them from my channel (I'm not saying you are like them - I'm just having a polite conversation with you).

When it comes to weighing who has more credibility, knowledge, and a clue, I'm going with John Swenson who worked for over 40 years as a professional Ethernet engineer for Broadcom and Cisco, and not ASR which openly advocates NOT using your ears to decide what you like and bans people from their site who actually choose to use their ears.

I'm not going to be one of those people who has his ASR buddies over and says while listening to my system "I know it sounds like crap, but MAN you should see how great it measures!"

This is not aimed at you and respect your differing opinion. But I again would suggest people use their own ears and not allow others to tell them what sounds good and what doesn't. I would never be so arrogant to tell someone what they can and can't hear.

I challenge anyone who says they can't hear a digital difference to actually tell us what their system is. It's amazing when I've got them to finally admit to it in the past how incredibly low-resolution it is.

This is not a flame war - just stating my personal experience and again I respect yours. I know you "prefer to wait for better evidence than audiophile anecdotes before I spend time and money on such a purchase", but I think you misunderstood my post if you think I was in any way trying to sell you anything.

Have a great night and thanks for sharing your opinion - differing opinions and hearing is what makes this hobby so great.
 
Thank you for such a nice reply!

I'm also not here to convince you of anything. I truly believe we should all approach this hobby in the way that suits us and allows us to find our bliss. I mean to simply present my view and how I look at justifying my beliefs and purchases.


Hi Matt,

I respect everyone's opinion. Unfortunately it is the Anti-Ear crowd that attacks those with ears with a vengeance and viciousness. I've had to block quite a few of them from my channel (I'm not saying you are like them - I'm just having a polite conversation with you).

I'd just like to point out, that while take your response in good cheer, it could be seen as poisoning the well somewhat to start with declaring some crowd "anti-ear" insofar as it means to demean others as "not having MY hearing abilities."

It would be like me using the term the "anti-science crowd" or something like that. Most of us have more nuanced views.

When it comes to weighing who has more credibility, knowledge, and a clue, I'm going with John Swenson who worked for over 40 years as a professional Ethernet engineer for Broadcom and Cisco,

I can understand why you would find Swenson compelling.


and not ASR which openly advocates NOT using your ears to decide what you like and bans people from their site who actually choose to use their ears.

It depends what you mean by that. If you mean that Amir would recommend seeking speakers that tend to measure in a certain way, I'd say that's true to a degree. Though he also listens and reports on listening impressions in his reviews.
Also, some people seem to think that ASR isn't about listening or trusting one's "ears." They certainly advocate listening, but also recognize the validity of tests (and research based) using blind testing, when one is really trying to get reliable knowledge. It's really in blind testing that you are REALLY "using JUST your ears," and not your eyes as well (or that is, your knowledge of which gear you are listening to). That's really when the rubber hits the road, but few audiophiles are willing to truly put JUST their ears to such tests. (I've done it fairly often).


I'm not going to be one of those people who has his ASR buddies over and says while listening to my system "I know it sounds like crap, but MAN you should see how great it measures!"

I don't recognize that as a realistic characterization of ASR folks or...audio gear in general. So for instance, take gear that measures fantastic in terms of low distortion, like Benchmark preamps/amps/DACs. Perhaps you would listen to such a system and not like it. But that wouldn't mean it "sounds like crap" as many other audiophiles would think it sounds amazing.


This is not aimed at you and respect your differing opinion. But I again would suggest people use their own ears and not allow others to tell them what sounds good and what doesn't.

I'm sympathetic to that and in fact I wouldn't go telling anyone what they ought to do. In fact over on ASR I often explain why, for speakers, I find the measurements only "so" helpful and I will ultimately go with what I perceive in sighted speaker auditions. I have preferred a number of speakers that do not measure like, for instance, a Revel speaker (Revel epitomizing the type of measurements seen as most desirable on that forum, at least by some members).

However I think where you and I would part is that I would not rely strictly on what I think I can hear when it comes to determining more controversial claims in audio, or what many cite as technically dubious claims. Like...super expensive servers sounding better, expensive USB/digital cables etc. Completely relying on what one believes to hear can lead to imagined differences, which isn't as helpful if you really care about understanding what is going on.


I would never be so arrogant to tell someone what they can and can't hear.

In some cases there really isn't any arrogance in telling someone what they can and can not hear. Human hearing, like sight, has limits. You can't see X-rays, whether you thought you could or not. You can not, in all likelihood, hear up to 30kHz, whether you thought you could or not. In fact if you get your hearing tested, that's a type of blind test. If the test shows your hearing drops off like a rock at 14kHz, then you can protest all day long but your test shows you can't demonstrate you can hear any higher than that. And it would be right for the audiologist to tell you "sorry, you can't hear beyond 14kHz.

Similarly, there really is all sorts of research regarding the limitation of our hearing in terms of dynamic range, distortion thresholds, masking effects etc. If two cables measure distortion below the known hearing threshold and you still claim to hear a difference, there is every reason to presume you really aren't hearing a difference and are imaging it. Of course, you could demonstrate otherwise by submitting to a blind test, but again...most audiophiles who "Trust Their Ears" won't bother with that.



I challenge anyone who says they can't hear a digital difference to actually tell us what their system is. It's amazing when I've got them to finally admit to it in the past how incredibly low-resolution it is.

I honestly think the whole " you need a super high resolution system to hear X changes" tends to be a red herring. The first thing is that claims about, for instance, cables changing the sound are made by all sorts of audiophiles, from those with low priced systems up to sky-high priced. That is consistent with both the idea cables make significant differences OR with the idea many people can imagine these differences. And the sonic differences often claimed for cables are significant enough they would show up on any decent speaker system (even cheap types).

I work in post production sound. I have to have very acute hearing to do my job. I'm literally doing things like matching the "air tones" of a room - literally just the slight barely noticeable rush of air a microphone captures in an empty room. And I'm juggling sometimes 40 tracks of sound or more at a time, so I have to be able to hear when I'm making slight changes to even one of those tracks. And yet I have been able to do this on a whole range of systems, many of which I have no doubt you would judge "low resolution."

As for my own experience with equipment, I used to do reviews for a while and have been in the audiophile game for a long time, having owned speakers such as MBL, Thiel 3.7s, various Audio Physic, Von Schwiekert, Waveform and many, many others. Right now I have (among my speakers) Joseph Audio Perspective2 speakers, which are very "high res."
My main amps are CJ Premier 12 monoblocks, though sometimes I use a Bryston 4B3 (borrowed). I use a Benchmark LA4 preamp (among the most transparent you can buy), a CJ Premier 16LS2 tube preamp, Benchmark DAC 2L, Transrotor Fat Bob S turntable/Benz Micro Ebony L cartridge etc.

I also have used all sorts of cables in my system, because I know other audiophiles who can lend me some when I need it. So for instance for a while I've had a pair of XLR cables that cost a little under 5 grand. I didn't need them anymore because I bought some basic Audioblast cables (which I believe use Mogami cabling) for about 50 bucks. I detected NO sonic difference when I replaced the expensive cables, as cable theory predicts. I hear every iota of detail still. I've also sold speakers I own to another audiophile who put around $50,000 of cabling - much of it the highest end Nordost.
There wasn't anything I heard on those speakers with that cabling that I didn't hear at home with standard Belden cabling.

Now, the inclination might be to say "well, I guess you must have poor hearing abilities, not like ours." But, if we wanted to talk challenges, I would challenge anyone here to try doing my job - if your ears don't perform picking up the most minute defects in sound, you are out of a job!

But that's the thing: If we stick to a purely subjective paradigm, in which the audiophile's ears are Always Right, then none of these issues can ever be settled. If I use exactly the same method you use and don't hear a difference, that can never be taken as counter evidence because you can always say "Well, so what? I hear a difference so that's that."
It's unfalsifiable.

This is why I don't mind REALLY putting my ears to a test when I want to know what is going on. I thought I heard a difference between two music servers, even though I knew it shouldn't be the case. But when a friend helped me do a blinded shoot out, where I couldn't know which was which and ONLY had my ears to rely on, well the "difference" vanished. I find that not only sobering in terms of accepting the liabilities of uncontrolled listening, I also find it enlightening and helpful. YMMV. No one else has to engage in such tests who don't want to.

This is not a flame war - just stating my personal experience and again I respect yours. I know you "prefer to wait for better evidence than audiophile anecdotes before I spend time and money on such a purchase", but I think you misunderstood my post if you think I was in any way trying to sell you anything.

Have a great night and thanks for sharing your opinion - differing opinions and hearing is what makes this hobby so great.

Have a great night right back! And thanks. Sorry for blabbering on...

Cheers.
 
Hi Matt,
Unfortunately it is the Anti-Eyes/Biases crowd that attacks those with Eyes/Biases Anti-ears with a vengeance and viciousness
FIFY


45 Years of Stereophile | Stereophile.com
As far as the real world is concerned, high-end audio lost its credibility during the 1980s, when it flatly refused to submit to the kind of basic honesty controls (double-blind testing, for example) that had legitimized every other serious scientific endeavor since Pascal. [This refusal] is a source of endless derisive amusement among rational people
-JGHolt, founder Stereophile
 
Thank you for such a nice reply!


Have a great night right back! And thanks. Sorry for blabbering on...

Cheers.

It's all good and I appreciate you keeping it civil! It's great we can have such different opinions.

At the end of the day, I really don't care if others believe I can hear a difference or not and they need to learn to not care that I can.

It's my system, my money, and my ears and cable deniers (not aimed at you) shouldn't get so upset we can hear a difference. :).

Thanks Matt for letting us have an adult conversation about this! I'm sure comments will follow from the snarky people in the room who like drama trying to derail the civil conversation you and I are having.
 
Happy New Year Mark, hope 2023 finds you well...and able to just sit back and enjoy some tunes.
No knives.
 
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