It is rather amazing . He must script practice repeatedly before filming. No way anyone speakers line this for this long so smoothly without lots of prep
Peer reviewed is a joke. At a conceptual level that peer group is just as good as a cult. Nothing personal. Just stating what I feel about peer reviews. Bose did not care. Steve Jobs did not care. Elon Musk does not care. Bezos does not care. Says something about it.
Single author papers are often more a hobby project than anything else. That crap gets published too is a flaw of the system - in this case probably because no competent reviewers could be found by the journal.
Jay is completely untrustworthy. He told me a few days ago he doesn't take payments for reviews, but before, he's stated that he doesn't take payment "upfront", but if the company likes the review, then he will take payment afterwards. To me, that is taking payments for reviews. And it's his shady way of trying to get around YT's payment disclosure policies, by stating that he wasn't paid "upfront" for the review, but he may be paid some time after the review, so why would he disclose it in the review if he hadn't been paid yet? Shady AF.
When these guys say they haven't tried an equipment yet, they'll usually follow by saying that they're gonna talk to the brand to get a loaner or a test unit or a tester sample. Unbiased my a*".
Brilliant and thorough breakdown and explanation of the report Amir. No doubt this takes a lot of your time to review and present back and I'm sure it gets painfully repetitive so a huge thank-you and appreciation for what you do!
@@joesmith4443 What are you even talking about? As of this writing there is not a single secondhand eBay listing for a D90SE. On HifiShark there are 2 secondhand listings in Europe, nothing in the US. I get that they don't hold their value on the secondhand market quite like Schiit, but you're making it sound like we should be able to have a choice among a half dozen listings at any given moment.
@@YuengsNwings I counted 7 on hifishark second hand and the others are new from China totaling 23. Keep looking they are out there. It depends on the draw. eBay doesn’t show the sold ones in the past but hifishark does! The listings even site the ASR page of the review for 90se as advertisement. As of yesterday There’s one for the D90le for 600 on eBay which Amir ranked even higher! My point is that if it’s the “highest score” dac it SHOULD the best sounding (according to Amir’s testings and credibility). Plenty of toppings that Amir reviewed with high scores on eBay like the Topping DX7 Pro (ranked 3rd of all time) 14 of them currently selling on hifishark. So what’s his criteria then in his recommendation? How well they measure?
@@YuengsNwings Second hand on hifishark are 183 sold! And -four- seven currently selling. Head fi has at least 25 sold or taken off the market Topping DX7 on hifishark there are 14 selling now! It’s ranked 3rd on Amir’s all time list of DACs!
@@joesmith4443 Have you ever thought that you might be one of the people that like distortion and noise? ‘Better’ in engineering terms might not appeal to you (personally I like SET amplifiers, I like what they ‘add’, but from an engineering POV they are terrible), people selling DACs on eBay or any other second hand platform is no measure of the precision of equipment. I think you may be on the wrong RU-vid channel here, there are plenty of channels where people tell you what they like the sound of out there, but in terms of engineering, their subjective opinions are utterly worthless.
I just realized that I have a problem with Amir’s video reviews. When I read his reviews on ASR, I pictured Amir as a dude in his 20s, with a cool haircut and maybe a goatee. Che with Dan Clarke headphones. Maybe it was the pink panther, maybe it was the impish sense of humor that would bubble up here and there, maybe it was the sense of iconoclastic slaying of an older generation’s audio myths, storming the ivory tower of audiophile elites and liberating the hobby for the masses. Now I watch this dude who is my age , or thereabouts, and man, all those qualities of the “young rebel Amir” are still there but in the nicest, least snarky and most articulate package.
You need PRECISELY that combination of age, experience, snark, a rebel streak, good debating skills, AND the facts to back you up in order to confidently take everybody on the way Amir does - and quite successfully at that.
I just couldn't wait for your take on this one (and it didn't disappoint, mildly said) 😄 This felt like an autopsy on insane claims and also reminds of the Mofi incident, where 'golden ears' claimed they could here any digital step (except they couldn't). Thumbs up for your humoristic and non-offensive take-down of a 'scientific' document.
I really admire your passion and patience Amir. We all know that these "expert youtubers" are only influencers trying to make easy money speaking BS for naive people. Nowadays this is not only seen in consumer electronics but all market areas, pitifully. Thanks for another great, educational video. Keep it up!
"We all know that these "expert youtubers" are only influencers trying to make easy money speaking BS for naive people." This is exactly why I can get so aggressive towards these *****. They are literally making a fortune at the EXPENSE of all too often decent, hard working but ignorant folk, who are not LUCKY enough to have yet fallen under the educational umbrella of the future legend that is Amir.
@@fwabble That "Amir" is also a youtuber generating clicks and making money running a website that delivers it's audience what that audience wants to read.
I can not imagine how much work had to go into debunking that report. You have my admiration. The report reminds of something I heard a while ago: "If you can not convince them, confuse them." ;)
Thanks and isn't that the truth. And it has worked given how youtubers put it forward and say, "here it is" without an ounce of explaining what the paper is saying.
The sad thing is that there seems to be more people believing the snake oil on Jays channel (which I just unsubscribed to). Placebo is real. It effects all of us. Just get a wire that's the proper gauge and call it a day. I love this channel and the Audioholics channel. You two are where I go to debunk the myths. Thank you!
Some well known audiophile reviewers admit that with higher end gear there are psychological factors to do with the look, feel and price that determine the perception of how good the product sounds.
So are the test and who measures them. Amir had this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Fa1y9JRip68.html removed from ASR instead of rebutting the claims on measurements. He also bans dissenters and collects users data via cookies to sell to advertisers. Ask any guitar player what amps sounds better and they say tube which measure terrible compared to solid state amps. Why do you think they say Elvis had that velvet sound. That’s a tube mic! What is accurate and what sounds pleasant two different animals most of the time. It’s best to get both when possible but I’d take sound over measurements any day. Gene from Audioholics admitted he and his wife prefer the sound of vinyl which doesn’t measure as well as a DAC. Go figure. Folks were NOT measuring medical equipment for precision performance. Sound is subjective so is music. Placebo or not, It will always be the case!
I have no issue with audiophiles who dismiss measurements and science. You want to spend thousands on cables, go for it, love them and enjoy then and I hope they bring you joy. What bothers me is when these people try to cross over to the world of objectivity and science to justify their beliefs. Who do they think they need to answer to? This paper was written backwards: the conclusion came first and the data followed. Why bother? I saw this on Jay's channel and thought Amir's going to tear this to shreds! Thanks again for another awesome video!!
I’m glad I came across Audioholics when I got heavy into audio years ago (back when Hugo was still on the channel), they always brought forth no bs information and I’ve learned a lot from Gene, Matthew, James, and the rest.
Amir, thank you. When the first you tuber came out with this “proof” from a college professor my question was, “who funded his research?” I tried to explain that college professors would generally find grants in order to do research as no college or university wants their professors working in unfounded projects. The old saying “publish or perish” refers to publish things you get paid for and bring money into your college. Of course people took offense just like in anything cable related. My thoughts, there are three important things when it comes to speaker cables: gage, quality of copper, connectors. Anything else is jewelry and things like little batteries and tinker toys are pure snake venom! Did I say Audioquest?
I’ve specified the cabling for passive audio monitors in TV outside broadcast trucks and studios with 2 core power cable in the past. Diameter was more than sufficient for the speaker power handling, and its easy for the cablers to route and terminate. We used a significant amount of it in the OB truck jobs for wiring up the UPS batteries and it made sense to use what we kept inventory of, as most monitors were active/powered. Never heard any complaints! Ditto, line level, mic, analogue/digital video, RF cable/waveguide, data, power, optical were all selected using… surprise surprise, knowledge of the signal on the wire and cable data sheets! (And vendor quantity discounts) Something I’ve never understood is what these audiophiles feel that they’re going to gain by spending money on far more exotic components than a professional recording facility would - the very source of the material they’re listening to. Pros are spending their budget on well engineered tools built with a purpose in mind, room acoustics and other things that create an accurate listening environment and/or otherwise facilitate their work. One suspects there’s a reason no one in the audiophile world thinks to ask them what cables they use.
You bring up an interesting point. If there’s one thing that Amir and most of his fans stand for, it’s their “belief in science”. Given that scientific research is overwhelmingly conducted by universities or product development teams, it begs the question: how can we fully trust any of it?
A classic Amir deconstruction. I enjoy these so much. The the highest resolution oscilloscope I’ve used was a LeCroy 12 bit, HDO6104-MS. This was used to attempt to measure ripple of a 2-10kV DC pulse for x-ray gridding. Being retired I sure do miss those challenges.
@@blanchbacker I went to a community college and got an associates degree electrical technology. I went to work for a audio/video store as an electronics service technician for 5 years then went to a manufacturing company as a electronics tech for 16 years. I was hired at GE Global Research, in upstate NY and worked there as a electronics research technician for 23 years, mostly in the healthcare, x-ray and military power electronics.
Sir you are an absolute treasure, thanks for sharing your knowledge.
2 года назад
By the way, you can "withdraw" a peer review publication by proving such things as wrong methodology, wrong claims and so on. You just need to write a paper :) If you need help with that, I am quite efficient writer who is also strongly interested in this topic
Thank you for doing such a detailed analysis on this and thank you even more for you fantastic knowledgeable treatment of all things audio. I am not an audio engineer but I have a good background in electronics so I have long been sceptical of the performance advantages attributed to expensive cables (not to mention expensive digital cables for audio) but I have never had the opportunity to test their claims myself. Your dedicated work has restored my confidence in science. The world is indeed a sphere and not flat. There are several good reasons to buy high quality cables (standards compliance, reliability, robustness, aesthetics or just pride of ownership) but imagining that a $500 ethernet cable is going to improve your audio quality is just foolish.
As we’re taking science, it’s actually an irregular ellipsoid, or oblate spheroid, not a sphere. But anyway…. Amir has done an excellent review as always. Shame AES didn’t seek his input before publication.
Someone really needs to crowdfund a massive blind test, and host all of these predominant youtube audiophiles who have been slinging this cable voodoo unchecked for forever and a day. I watch and enjoy a lot of these guys, but somebody seriously needs to put a nail in this coffin, it's absolutely absurd. Time to put their money where their mouths are.
@@rowanjones3476 AES was terrible. Post publication, as an AES member, I post three responses to the comment section. All three were rejected and I was told to get on a zoom call with the author instead! My head is down with respect to treatment from AES here.
@@giriprasadkotte9876 To me he does. Also he clearly doesn't know jack s. Either go full subjective like some do (admit you have 0 idea for the science) or do your homework and stop pushing stupid stuff like this "paper".
Thanks Amir. From my experience, if something is written on formal paper, by an expert, it doesn’t mean it’s 100% true. I always tell people to follow the money if you want understanding of the truth. How many times have we encountered “scientific research” which was paid or sponsored by a corporate or political agency?
Another great de-bunking video. Jay I is another channel that keeps getting pushed into my view through algorithms even though I keep telling RU-vid to quit recommending channel. I would be very interested to see your measurements on capacitors. Electrolytic vs Polypropylene especially when used in speaker crossovers.
Electrolytic decay (dry out) overtime, and it can behavior like a inductor with higher enough frequency thus distort the signals. Electrolytic is far susceptible to ambient temperature and humidity changes and in generally not suitable to use in signal paths. See www.wima.de/wp-content/uploads/media/WIMA-Audio.pdf.
Lol of course they are considering frequency loss above 100khz. They can't show cables matter if they consider human hearing range. The funny thing is that a lot of high end cable performs worst than regular stranded wire. Aren't they lucky that we can't actually hear a difference.
I just LOVE this channel! The first thing they hammered into my head in engineering college was; 1) Make dang sure you are measuring something relevant to the application, and 2) account for measurement errors induced by your imperfect setup before drawing any conclusion.
Jay is an awful reviewer. He really doesnt know what hes doing for his channel. He is all about subs and clickbating. He use to work for Audio Excellence Canada and moved on for his channel all for $$. Audio Excellence Canada continue with their reviews which are far more credible over the clickbait crap from Jay
So there is one guy in the world who can measure the difference they hear in different cables? Can’t wait. Also no way for others to reproduce his tests? Solid science… Edit: Oops. Edited out some typos and apparently RU-vid removes the heart thing given by the channel owner after the message has been changed. I guess I can see why that is.
Your ear with your brain can measure. You can defenetly say when difffrence in volume is persist in 1-2 seconds drum kick and how loud is it. Even that short sample have wave that very vary inside. Using same equipment, same sample in different days and daytime, changing only xlr or rca cable for example. I did that 5-10 times and heard it. So for me its something that persist in aspects/characteristics of that kick that didnt change and what I can hear in any other sample, but may way harder. (depends how clearly you can hear that sample)
The only exception is very very close to perfect equipment and very stable electricity, where any cable will not be noticeble, cause there is almost 0 distortion. Appart from that Ive noticed a lot of people got hearing abilities way worse than mine, but mine not that perfect as some proffessionals in musical world has. To underline all above, the thing ppl need is to understand how good their ears are.. to do some tests with live instruments at least... Did you hear some wrong playing on guitar or "broken notes" etc? Before you go and run look at measurments. I could defently hear difference between 98 and 100v - its 1-2% of voltage difference, but it affects sound and my ear response on the results. Any day, any track same equipment.
Amir, you forgot to sprinkle the magic fairy dust on the connectors. That is why you don't hear the difference between the cables. Thanks for the detailed analysis. Your videos are a breath of fresh air in the dim, squalid world of hi fi audio.
I just posted this under the Jay's iyagi video on this paper... ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a4R6I_TtKQQ.html ) "A bit of a rant... Note - you do not have to agree, and if you don't like what I have written that's fine - really. This video currently 342 comments and none point out the absurdity of sending a 4ns pulse down a cable intended for audio use as a test method? The paper barely mentions transmission line theory (highly relevant to 4ns pulses and fast transients, but not generally relevant to analogue audio signals). This becomes even more apparent when they try to measure transient response in section 4.4 when sending signals which would require the cable to have a matched terminating impedance and or matched source impedance, but they go with an arbitrary source of 100 ohms and a load of 10k ohms. This is reasonable for audio frequencies, even up to 100kHz or so, but they do not test with a signal that is reasonable for audio. A get it that audiophiles do not like engineering types (like me) questioning their beliefs, and I have little issue with that - they are entitled to their views. But I cannot accept "research" when the basic electrical principles of how signals behave in cables are overlooked to such an extent." Will see what happens....
A year down the road ... than this is still a discussion? Lets talk about what really makes the difference these people are hearing. Here's a simple experiment anyone can try... and audiophiles should. 1) Sit in a quiet room. No music. No TV... just you in a quiet room. Now relax, sit back, and just hear the room for a couple of minutes ... get used to what it sounds like. 2) Now gently, with your thumb and forefinger pull your ears back and up, just a little bit. Notice how the sound of the room changed? It got more open, airy and lively sounding... the sound probably also shifted slightly up in frequency. 3) Now add a mechanical clock or a quiet metronome ... tick tick tick tick. 4) Relax again and take in the room sounds. 5) Now focus your attention on the clock (metronome). Notice how the sound of the room changes when you focus in... You might describe it as being more open, airy and lively sounding... just like step 2, above. What you have just noticed is an actual human reflex. "Cocking one's ears"... and we do it automatically, without even realizing when we are focused on a specific sound. We use it to pick out conversations in noisy rooms, to hear a specific instrument at a concert... and... when listening to new cables in our systems. It is the difference between "hearing" and "listening". So now lets imagine we are testing a new cable... first we play a familiar piece of music, then we swap in our new cable. We focus in on the sound... we subconsciously "cock our ears' ... and lo and behold we hear a difference. This is also used to advantage during sales demonstrations... You're at the audio show, there is a cable maker's demo, so you go in and settle into a chair, with music playing as you wait for the sales pitch. Now the salesmaker comes out gives you the pitch about his miracle wire, made of single crystal, oxygen-free, cryo-harmonized, copper jacketed in unobtainium and polished to a fine finish by the virgins of valhalla. "Now lets hook up this cable... listen carefully, and see if you can hear the difference". So now he plays the same music again and son of a gun, everyone hears the difference! Why? Because the second time around they were paying attention, ears cocked, and searching for even the slightest difference... Yeah it's really that easy to fool huge numbers of people...
Nice work addressing this paper, Amir! Seems to really call into question AES and the reviewers on why the paper was accepted for publication. With those types of issues I don’t think it would have been accepted into other journals for publication. An easy google search quickly pulls up the professors webpage and CV. Looks like he mostly focuses on superconducting nanowires and thin films but then uses concepts from high frequency analysis in those areas to then apply them in psychoacoustics and high end audio. Interesting pairing. His webpage also states that he expects to publish an entire book in 2023 on topics in audio, will be interesting to see how that is received in the field!
I am pretty sure that Amir's video is addressing this paper: boson.physics.sc.edu/~kunchur/papers/Interconnect-cable-measurements--Kunchur.pdf If so, it is not a paper in JAES but some weird international paper that may not have credibility? IOSR Journal of Electronics and Communication Engineering(IOSR-JECE)
Thank you for this tireless work. Scammers and grifters suck. Anyone peddling these cables is EXTREMELY suspect. There is ample proof from you and Audioholics that you don't have to pay much for high quality, well engineered audio interconnects. We are in you debt sir!
Jay's WTF moment was when he took Danny's advice and compared the GR Research XLS to the Sonus Fabers instead of the Polk. It was a no-lose situation for Danny when comparing his kit to the much more expensive Italian
28:30 I busted out laughing here! 😂🤣 I love your method of busting these ridiculous myths. As someone who grew up being taught electronics engineering by a lead RCA engineer (my grandfather), went on to develop microphones and speakers based on the hardest science we have on the subjects... just to say one thing - a mic with character, warmth, body, and other non-scientific terms people use - the sexiest mics have a good bit of self noise and distortion created by the “exotic” parts, such as discrete circuits with high end transformers, vacuum tubes, etc. There are mics today that minimize these effects, but the most sought after mics often have some rough measurements that do not turn us off. I appreciate that you measure what matters on the playback end and discuss what is useful vs useless information. 💚
The highly touted MQA streaming technology actually adds high frequency distortion to the signal. Presumably to create a psychoacoustical perception of better sound brightness.
@@dingdong2103 This is total madness.The person who get this "brilliant" idea should be treated as bad as the people who accepted it... Anyways streaming is a compromise... Cheers.
hahaha that is one of the most ridiculous answer on RU-vid.... "most credible reviewer".... have you seen all reviewers on RU-vid? Is this "credible reviewer" peer reviewed? Can his reviews been backed up by scientific evidence, does he have an understanding of human hearing and brain functions? Etc. Etc....... stop kissing your self proclaimed guru's a**.
I work in medical science, if a researcher does a paper promoting a specific brand, data should be not only irrefutable but corroborated by other researchers, otherwise you loss your credibility, your money and sometimes your freedom
That kid from Canada (Soulsik) has a history of making outlandish claims about anything "audiophile". Every new piece of kit he talks about, is the "best thing ever", especially if it's esoteric/expensive. Laughable ; zero competence ; snake oil pedlar. Pass.
So funny how audio works these days. Musicians record with really expensive microphones, producers make is sound really shitty trying to make the record as loud as possible using crappy plugins. Then the mastering enginner destroys the sound even more to make it sound good on boom boxes or cars. Then rich audio freaks come along and try to convince themselves why to buy expensive cables to make that crappy recording sound better while ignoring basic physics.
Sadly most people lack the necessary basic education to even understand why the cable differences don't matter (edit: Outside of noise and EMI, of course). Even if you can explain it to them, they wont have the needed knowledge to evaluate your argument vs. the subjectivist one. I have had that similar arguments with, shall we say, certain other "people" on this platform who are also purveyors of audiophile cables and its pretty much hopeless since the necessary concepts are outside of their mental purview. Its not that they are unintelligent. Most are simply ignorant when it comes to technological topics like this.
Cables are passive components, they do not generate noise nor EMI or RFI, these quantities measures susceptibility or radiation of EMI, RFI in equipment.
Peer review is critically important. Unfortunately, it's not always critically done. I've come across multiple peer-reviewed papers over the years that were simply wrong and the generous people who chose to review those papers did not notice the mistakes, whether through lack of competency on the subject or mere oversight. This professor should have asked an EE colleague for help; it could have avoided this entire charade.
I was calmly enjoying this video, but the "Subjective Frequency Response" had me howling at my desk. That is a hilarious joke for someone who isn't kidding at all.
You peaked my interest. Figuring that lump sum parameters are all that are really important here, I found three old RCA cables and wondered what the capacitance was for them. I was surprised to find that the junk cable that came with a cassette recorder over 45 yrs ago measured the best at ~75pf. And a high end video cable from Monster measured at ~85pf. Then a Radio Shack AV cable measured ~175pf for the audio and strangely ~110pf for the composite (Y). All cables were about the same resistance. So even the worst cable if driven with a 600 ohm source won't hit the 3dB down point until over 1.4MHz.
Thanks Amir. It is very sav that there is so much nonsense like this in our hobby. The truth is that audio frequencies are barely above DC and most budget cables are perfectly fine. Coat hanger wire to connect speakers may not look pretty but will have no audible effect on sound quality. It is only at Radio Frequencies that cables and connectors become important. At very high frequencies it becomes more like plumbing, but this does not apply in any way to audio.
Its called "fraud"..... report to poliice ANYBODY who quotes this to help persuade you into parting with cash.... Charge is "obtaining money by deception"......
Cables types do make a clearly audible difference for electric guitars, but they are a very special case with high source impedance (>50kohm) pickups and very high impedance valve inputs (>10Mohm). Apart from that type of application any perceived differences at lower impedances are due to other factors. When making random comparisons between hi-fi equipment it is important to consider what the cable screens are connected to, or not, they are highly unlikely to conform to AES48 recommended practise. Be very suspicious of measurements below 100dB. What is that referred to? Usually it is digital full scale where 0dB may be +22dBu or higher so you have to subtract that to convert to absolute measurements. The only thing I would disagree with you on is that "noise is noise: you either hear it or you don't". Most analogue audio equipment has a noise floor between -95dBu (good) and -60dBu (bad) and you can't hear either without amplifying it, but it does effect the perceived quality of the sound. After a lifelong career in professional audio the one thing I can say about comparative tests is that most people don't know what they are listening to or for. Very few people will be prepared to be the first to pass an opinion, they usually wait to see what other people say first, and very few people will go first and be right. Fools jump in, hence all the nonsense you get. Very few people can identify a 0.5dB change for what it is, they might notice a difference, but then it becomes a Rorschach test and they go off on their favourite hobby horse. Very few will just say "It's louder" and if they say "it sounds like 0.0025% distortion to me" they are bluffing. (Yes, that has happened!)
I am so glad I have not fallen into the serious audiophile rathole. Thank you for validating my ability to enjoy my $600 speakers, $600 receiver (Yamaha R-N602 with built-in DAC), my generic interconnects and 16 GA Zip-cord speaker wire (from that famous American audiophile store called "The Home Depot"), strung willy-nilly without "lifters". Even though your typical audio setup exceeds my car budget, I still enjoy these science based debunking videos, even though I would never have the patience to sit through some random RU-vidr like Kuncher trying to convince me I need $500 audio cables.
Thank you for breaking down that paper. I saw Jay’s video and one other … very disappointing to see people who don’t understand testing & engineering latch on to this paper and hold it up as fact … as you mentioned up front, when the paper doesn’t get into the specificity of the cables, etc., preventing anyone from replicating the measurements, it should immediately put up a “red” flag as to the paper itself. My take away from reading the paper was that it’s a justification paper for high end cables that not even the manufacturers can back up with measurements. Thanks again Amir!!
My pleasure. What disappointed me about Jay's video was him saying how he also was in science and was vouching for this work. That made a lot more people believe his read and ignore the fact that Jay didn't present any of the technical detail.
@Douglas Blake I know a few folks in research, and I assure you, they definitely don’t have the luxury of having someone do their lunch fetching! Packed lunches and constant belt tightening is where its at.
Amir, great respect for your analytical and objective approach towards reviews and in my opinion that's the correct way. I'm still laughing after watching Jay's video where he is so happy that finally he discovered a scientific paper that proves something, at least he thinks. Hilarious and sad in a same time.
The error in the testing methodology in Paper 1 reminds me of the arguments people have regarding Bluetooth codecs. There are people who SWEAR they are hearing a difference in sound when switching between LDAC, aptX, AAC or what have you. What they often don't realize that the differences rarely come from the codecs themselves but the way the way the receiving device is processing the audio, which can sometimes be different between various codecs, leading to a perception that the codec is making a difference when it's usually just poorly inconsistent audio processing.
Agreed. Even good old SBC can be very good and has often been used by quality brands in hi-fi components. Of course there are differences between codecs, but good implementation and integration is what matters most.
Low bitrate standard bluetooth will always sound worse than LDAC and that has been proven with measurements by Amir. Low bitrate is highly compressed and cuts off a large chunk of the top end (over 16khz, like MP3).
@@formdissolve Agreed. Those differences are audible. I was simply agreeing with the earlier post that the implementation also has a big role to play. That is especially true for some brands that aren't able to build the lower-level audio processing software themselves. It's not much different to how a poor hardware design can destroy the performance of a good DAC chip.
Thank you Amir, you made me laughing so hard. It is amazing how some so-called scientists can go so wrong. Unfortunately, he is not the only one...check out the hyperloop afficionados,
fortunately, for me and my pocketbook, old ears & damaged hearing (ie don't have 'golden ears')negates differences in audio even between speakers, amplifiers, DACs, parts, wiring, etc, etc. Saves me a lot of time seeking the latest & greatest marginal improvements.
@great100m Unfortunately..... many of us are circuming to poor or bad hearing.... I guess like "eyesight" 1 by one our sences begin to fail us as old age crreps upon us like a fog bank that just becomes thicker and thicker with no resolve..... For me, its like i am being slowly robbed of the things i love, and its quiet intolerable to understand that there is nothing i can do but accept this "degridation" of my sences..... I do sympathise and share your grief, i suppose its inherent of our age... God bless and keep well 🙂
Odd, my old and my hearing is not top notch. I could hear the difference ( I was shocked at how quickly I could hear it ) when I changed different types of headphone cables. It was literally stupid obvious.
No-one objects on this point (yet on the web one can lead lively debates on that level of assumptions and general statements) but are you sure the paper of discussion has not been peer reviewed? The one i am glancing here is published in the JAES..
Sadly this one is peer reviewed. Problem is that the review board is not experienced in this domain either and gave it a pass due to formal look of the paper with all those references and all. And no doubt the title of the author.
@@gioponti6359 The author Kunchur has two papers, one is published in JAES, the 2nd, I am sure is what Amir is reviewing in the video, is not in JAES but an international organization of dubious value, IOSR Journal of Electronics and Communication Engineering(IOSR-JECE). The graphs in this video is in the international organization paper. This is also a reference number 49 in the JAES paper. The JAES paper is also of dubious value. Kuncher had 16 subjects, and each had 3 trials to guess correctly. Really?
@@charlesbiller4371 thanks for making me aware of it.. i have gone through what I believe was the IO paper and found it in parts quite interesting (longterm listening tests and their justification for example - quite in contrast with Amirs blitz A/B tests, which also in my experience are less revealing), mostly however I was wondering who would finance such studies .. ;)
There's lots of articles bashing the entire process of "peer review". I think like a lot of things, peer review sounds nice and official but you still never really know if that designation is meaningful unless someone was to investigate what went into the peer review and exactly who did it.
It's a sad state of affairs when it has come to this. I feel like Alex Jones should be selling "premium audio cables" on his website that will "boost your audiophile experience" along with some cable lifters....
Honestly, audiophiles couldn’t care less whether it measures differently. If they sound different, that’s what does matter to them and that’s why people choose different speaker cables because different cables can accentuate certain specific characteristics. Audiophiles choose the characteristics they wish to accentuate for their system by what cables they they select.
I just sold my cardas XLR interconnects and replaced them with 45$ XLR interconnect for AliExpress. and I precise no difference on my audio research system. So don't waist your money 💲💰 on cables. There's plenty of good 👍 quality cables at reasonable prices. Stay away from the audiophile bleeding edge. Buy a better speaker or amp not a perceived better cable
Someone on the internet is going to be massively annoyed that you've used science, facts & experience to show that most "audiophile" stuff is snake oil. Great video!
I spent a year in engineering school studying electrical measurements. It is a discipline that laymen usually find baffling. That is because to measure something accurately and usefully, you must understand it very well. This fellow seems to have replaced that understanding with prejudice. And the the most common error in making measurements is prejudice. This fellow might well have started out in his project definition by saying, "The purpose of this effort is to prove that expensive audio cables are better (in some way) than cheap cables. In this effort, I will work with generalized, readily available asserts to prove that postulate." ..... As an aside, years ago I muted the RU-vidr, Jay, from my accessible group of pundits when I heard him describe the relative position of the volume controls as describing the power output capability of two amplifiers being compared. That demonstrates a 4th grade level of technical understanding. That level of knowledge is fertile fodder for the carnival cable touts. ..... Reluctantly I say, "Lottery tickets are probably a better audiophile investment than expensive interconnect cables."
Well that was interesting! It reminds me of when Linus Pauling, a Nobel Prize-winning physicist, became obsessed with vitamin c, and made some unfounded claims about its efficacy in treating everything from the common cold to cancer.
Great debunking presentation wrt the papers from Dr. Kunchur Amir. I was hoping you would address those someday. I quickly glanced four of his papers some time ago and my eyebrows raised a few times. For a PhD, his scientific methodology and experimental rigor are lacking, at least in the field of audio engineering; he should stick to astrophysics. There's another RU-vid audio channel called ANA[DIA]LOG that also put out a video about a month ago titled:"Audio Cables: Scientific proof of impact on sound?" (z-48th1gS2U). The RU-vidr, which is a likeable fellow but an audiophile that unfortunately believes and makes videos on many of the industry myths, also referenced the papers from Dr. Kunchur as the basis for his video. I think I'll go post the link to Amir's video on his cable video so that those folks that like to dig deeper can have a more informed point of view on the subject.
Excellent video Amir! Sadly Professor Kunchur seems may be promoting his bad science to his students (from his homepage): "Courses taught Physics 155: Musical Acoustics Physics 155L: Acoustics Laboratory..." 😐
Oh Amir, great video. When I saw Jay's I was firstly disappointed in Jay for taking comfort in that nonsense and secondly, I was hoping you or Gene might do a rebuttal video and here it is and not just a short 10min one stating how the paper is tripe but instead a real detailed analysis as to why. Lol I don't know why we would have expected less from you though!! Anyway again, great video, I hope the RU-vid algorithm sends watchers of Jay's here next as this deserves many hits.
It gets even better. Jay has done one on cable risers now! He hears a difference but caveats it with only hearing the difference in certain treated rooms, on certain systems and with only particular cables! But here's the thing, he admits he likes how they look and that also the difference could be in his head, but that that's OK because if his head says it's better and he enjoys it more then so be it. Now that might be ok if he wasn't a reviewer.. but as a reviewer doesn't it mean that his reviews are compromised since what he 'hears' is dependant on what he sees? Anyway that's one channel I can happily unsubscribe from!
This kept getting funnier the more it went on. I expected some minor mistakes in methodology due to a lack of knowledge in the field, but wow, this was beyond terrible! I'm glad you spent your time on this Amir, it was not just educational, but also quite hilarious. I appreciate your work a lot!
Finally !! I was waiting for you to make a video for this topic. From my own investigation, there is no measurable difference between cables when measured directly (the cable in question as DUT), but there is when I put it on a mic, then I can see TINY TINY difference in phase (few degrees in 10KHz+) and frequency response (less than 0.5dB), and that's it...
This professor is giving Creation Scientists a run for their money! This guy is bringing his pre-existing beliefs into it, not deriving his conclusions from scientific testing.
@Douglas Blake An affront to science. And an embarrassment to the education system. This kind of nonsense, his "paper" wouldn't get him past a second year term paper in the sciences. It's unbeilevable.
Amir, you are awesome and brings me hope that humanity has not lost its mind completely. I don't know what motivates professor Kunchur to do such an utterly flawed report and it puts a great deal of shame on him. Let's see if any cable company is using this nonsense in their marketing.
@Douglas Blake The audio cable industry has always needed someone's "scientific" arguments for getting customers to pay those insane margins since Polk Audio launched their Japanese Cobra cable in the 1970s.
@Douglas Blake I don't think those original Monster cables I have from almost 40 years ago are any inferior to any newer speaker cable I have. As a college student I worked in my summer holidays and spent most of the money on audio gear. I'm not sure audio fidelity overall has really progressed all that much e.g. comparing a modern system with my first setup and in particular I am quite convinced I had more resolving qualities out of my student system of my first Stax headphones with my Denon CD player and NAD3020 back from the 80s than most modern audiophile systems of today. Rather, when I compare my latest computer or smart phone with my first computer or the home phone from 1982, progress has been insane.
This is like Amir with a Sharpie marker slowly drawing things on the researcher's face until the researcher's face turns into a clown. The bigger clowns tho are the RU-vidrs that ate the research paper.
Section 3.2 at 20:00 and 29:50 - he says he uses 4ns pulses... For audio cable testing? WTF...? (Maybe it's to justify the expensive test gear?) If that's a decent pulse generator the harmonics could reach tens of GHz. The guy has no clue. Also, at 28:10 - the "subjective frequency response"... I think it's that warm fuzzy feeling you get when you know you've spent far more than any sensible person on interconnect cables and you've just convinced yourself that it was money well spent. 🤣
Jay: As someone with a scientific background and a day job as a researcher, this paper is legit. Me: But, but it is just one paper with no repeatable experiments and in a questionable journal..? Jay: Trust me. I also used to work in a high-end audio store. Me: Okay.
I have to express my deeply gratitude to all those people who believes in expensive cables, without you there would not be a reason for Amir to put these masterful lectures, than you!!
