Machina Dynamica New Dark Matter CD and Blu Ray tray treatment?
Old Hubble photos of black holes. (And illustrations). I hate to judge before all the facts are in but it appears Harvard is a little late to the game. Furthermore, LIGO Observed very good evidence of black holes two years ago when they observed gravity waves produced by black hole merger. I’d say better evidence, actually. https://www.spacetelescope.org/images/archive/category/blackholes/ |
Breaking Gnus!! 🐂 🐂 🐂 Researchers announced on April 10 the discovery of fossils in the Philippines that they say were from a species closely related to humans.(Rob Rownd/UPFI/UP-ASP) By Ben GuarinoApril 10 at 1:00 PMPlease welcome a possible new member to our band of upright apes: Homo moopicus, whose teeth and bones were discovered in a cave on the island of Luzon in the Philippines. The remains represent a new species, scientists concluded in a report published Wednesday in the journal Nature. Our genus, the Homo in Homo sapiens, contains multitudes, including the thick-browed yet sophisticated Neanderthals and Homo erectus, a nearly 2 million-year-old species that may be our direct ancestor. |
Yeah, like we needed more proof. Give me a break! The Hubble has provided awesome photos of black holes for a great many years, anyway. Harvard must be feeling a little down in the dumps. Besides, isn’t this another example of providing evidence that shows nothing and claiming it’s something. Furthermore, wouldn’t it be more impressive to show us a photo of the supermassive black hole located right here in our galaxy? |
A funny Harvard joke. A freshman from the South is walking around campus on his first day. A little bit lost he goes up to a Senior and asks him, “Can you tell me where the Student Union is at? The Harvard Senior, responds, “Here at Harvard we’re taught to never end a sentence with a preposition.” The freshman, rephrases his question, “In that case, can you tell me where the Student Union is at, a$$hat?” |
michaelgreenaudio A few days ago I received my sample from Geoff and my responsibility is to find where I think the product might work the best and for who, looking for what. Geoff at this point is as high on my list as the company who sent us their $25,000.00 mono block amps. Wouldn’t it be totally cool if Geoff created the perfect CD tune? I think it would be anyway. Wouldn’t it be great if Geoff really was the smartest guy on campus? Wouldn’t it also be great if all Geoff has been trying to do is get us to relax a little, and we simply didn’t understand his sense of humor? Wouldn’t it be great if at the end of the day we realized we were all family? If so, I think some of us should still hold Geoff down and give him a serious torture tickling from time to time. Michael Green >>>>>>Apparently it takes longer than I would have guessed to get the answers to all of Michael’s questions, were they a foreboding of things to come? 😳 If finding answers was easy in this hobby we’d all have the best systems in the world. As I oft say, there are many reasons why getting to the bottom of almost anything in audio is not so simple. Aside from any sort of ulterior motivations folks might have, you know, perhaps professional rivalry, trolling, psychological predisposition, tweakaphobia, thou shall have no other gods before me syndrome, the nocebo effect, personal grudge, etc. and just looking at the obvious problems with testing ANY audio product - cable, CD player, speaker, CD tweak, iso stand, audio feet, etc. - The tests results will only be as good as the test system, whether there are mistakes in the system, e.g., Polarity issues, consciousness Directionality of Fuses and Cables, room treatment IQ, vibration isolation IQ, hearing skill/ability in distinguishing subtle differences, skill in hearing obvious differences, testing a number of times to establish confidence in results, don’t even have to mention time of day, weather, and many other factors that affect sound. Gonna raise me an army, some tough sons of bitches I’ll recruit my army from the orphanages I been to St. Herman’s church and I’ve said my religious vows I’ve sucked the milk out of a thousand cows |
I understand where you’re coming from but when I say signal to noise ratio I’m referring to the optical SNR and the downstream analog SNR which depends on it. By reducing background stray light in the CD transport you increase optical SNR. Of course, as you say, all sources of noise and distortion in the system should be controlled and minimized, too. The claimed SNR of 90 dB for CDs is achievable only if the system can handle it which, obviously, in most cases it can’t. That’s why the humble LP or cassette oft sound more dynamic than CD. As for the claimed Dynamic Range of 90 dB, many CDs are overly compressed so there goes your dynamic range spec down the tubes! |
I speculate one reason why a lot folks gave up on CD and moved to streaming or whatever is that they couldn’t get it right and gave up in frustration, that is if they even tried. Or they like the convenience or whatever of streaming or serving or whatever. I understand that. Untreated CDs played on untreated CD players generally sound thin, bland, compressed, metallic, wiry, irritating, remote, plastic, synthetic, two-dimensional, gloopy, generic, thumpy, hard, sour, rolled off, screechy and like paper mache. I’m not trying to set the world on fire. I just want to start a flame in a few hearts. |
Red-IR and violet-UV absorptive dyes are interesting, too. And these dyes have been around like forever. My last product was a dye. There are many ways to skin a cat. The whole point is to skin it. Otherwise, it’s just a lot of talk. There’s no substitute for signal to noise ratio. - old audiophile axiom |
mahgister All this thread is interesting... I cannot try the NDM,because I dont use now a cd player... I had transfer all my cd in flac files et listen only to flac files...I keep the noise of the computer to reasonable level and the results are at my satisfaction... But all that is because on the many tweaks I implemented... >>>>One can’t help wondering, wouldn’t you have gotten better results if you had used NDM in your player when you transferred all your CDs to flac files? You would now be listening to music with better signal to noise ratio, no? |
@celander It won’t do much for a mediocre system or one with mistakes in it. I never said it would. It’s not a silver bullet. I never claimed it was a panacea. Please don’t put words in my mouth. NDM is the first audio product to address this issue with the scattered light comprehensively. Hey, here’s an idea for you - try rubbing some plants on your CDs and see how that works out for you. 😁 |
And you have the attitude to go with it. 😁 You mean the absorption spectrum for phytochrome on this page? https://en.m.wikipedia.org/wiki/Phytochrome |
The violet / UV sensitive stuff is not phytochromes. ”Phytochromes are a class of photoreceptor in plants, bacteria and fungi use to detect light. They are sensitive to light in the red and far-red region of the visible spectrum and can be classed as either Type I, which are activated by far-red light, or Type II that are activated by red light.[2] Other plant photoreceptors include cryptochromes and phototropins, which respond to blueand ultraviolet-A light and UVR8, which is sensitive to ultraviolet-B light.“ |
Uh, oh, partial credit alert! 🚨 Yellow will only absorb violet light. Complementary colors only apply to visible colors. That’s kind of the whole problem. There are no complementary colors for invisible light. See if you can guess what will absorb both the visible violet scattered light and the invisible scattered light in that general vicinity. |
My previous two products, Codename Turquoise and Dark Matter (Emerald Green Liquid that was also very hush hush) absorb visible red and invisible near infrared light, respectively. They have been replaced by New Dark Matter. I also sold a set of various color pens for coloring the CD, including the data side; that product has also been discontinued for obvious reasons. pop quiz: Turquoise (Cyan) absorbs the visible color red. What color should be used for a Blu Ray player. Free NDM to first correct answer. |
The facts that (1) there’s a threshold of detection for the photodector and that (2) the Red Book committee hired “coding experts” Reed and Solomon, a couple of older conservative types, to come up with some hairy far out error detection/correction codes leads me to believe the original designers knew of this design flaw - scattered background light - but chose to ignore it and cover it up. Another possibility is the reason for the detection threshold was because they knew the light wave cancellation when the laser beam was over a “pit” was not always absolute, that some light would be returned. Or, it’s possible they were just plain ignorant of the problem. |
There is a threshold for detection. Light signals less than 75% full reflected power will not be detected. This is very good news because it means we don’t have to completely eliminate the background scattered light, just reduce it sufficiently in intensity. Think if the inside of the transport compartment like a light bulb lit up by scattered light. You just want to turn the brightness down a bit. |
Moops, did you forget to take your smart pill today? If the scattered light is always in the background then it can get into the photodetector at times when there is supposed to be no light detected, i.e., when the laser beam is over a “pit.” When the laser beam is over a “land” the full reflected signal is registered by the photodetector for that short period of time. Obviously, you don’t want any scattered light to get into the photodetector during periods when there should be no reflected signal. Follow? |
moopman BTW, anyone know the actual EM frequency range that sensors used in CD players actually detect? That would be a good start to know what will be most effective in absorbing the light, not that it is likely to matter... >>>>Yes. I do. Now, see if you can guess what frequency range the CD laser operates at. |
moopman b) Also black matter being black only means it absorbs the light we can see, just like other black things. That alone provides no evidence that either IR or UV wavelengths are absorbed. Even if it was proven to absorb IR, and other black things not, it would not seem to matter given point a). >>>>You said it was black, not me. |
mapman15,742 posts04-04-2019 8:48pmHere’s another pop quiz. a) Given the speed of light and the small quarters inside a CD player compartment, what difference does it make if the light, regardless of wavelength is scattered or not ? The sensor detects the light at the same time whether scattered, reflected or direct. >>>>You’re no fun, Moops. You just answered your own question. |
celander OP1,194 posts04-04-2019 5:57pmBecause black is within the visible light range rather than the invisible light range. The whole point is to remove the invisible reflected light from reaching the photodetector. Or so your white paper claims. >>>>No, the whole point is that almost all of the CD laser light AND the scattered light is invisible infrared. Only a relatively small percentage is visible (red). That’s why the black tray and the Green Pen are relatively ineffective. NDM removes visible and invisible scattered light. It’s the problem nobody knew about. That’s the whole point. |
rpeluso535 posts04-04-2019 2:36pmIts the reflected stray light that these bit are designed/claimed to absorb. >>>While that’s a true statement as to what NDM is designed/claimed to do it doesn’t answer the question regarding why the color black won’t work just as well. |
Full disclosure: my previous product that addressed the invisible infrared scattered light was Dark Matter. That’s why I call the new product New Dark Matter. That was the old one. This is the new one. My other product Codename Turquoise addressed the visible red scattered light. There are both. Visible and invisible. The dude whose moniker starts with f had also inquired as to how I capture Dark Matter. I told him I surround it and tell it to come out with its hands up. Was that being too much of a smart a$$? |
