sandyk Posted September 29, 2020 Share Posted September 29, 2020 This is worth reading too. https://phys.org/news/2013-02-human-fourier-uncertainty-principle.html manueljenkin 1 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted September 30, 2020 Share Posted September 30, 2020 35 minutes ago, manueljenkin said: You forgot another "fact". "Functions that are localized in the time domain have Fourier transforms that are spread out across the frequency domain and vice versa, a phenomenon known as the uncertainty principle". Look further on it/Gabor uncertainty I provided a link to that article a couple of posts back. manueljenkin 1 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 3, 2020 Share Posted October 3, 2020 4 hours ago, pkane2001 said: PS: by the way, @sandyk is a beautiful human being. I know he’ll disagree, but he’s just too modest ;) I disagree because I am able to hear clear differences between 16/44.1 and 24/96, and demonstrated that in Frederick V's X and Y thread, even though people like yourself, fas42 etc. claim that it isn't possible. BTW, am I often way off base with my reports in J.D's little PM group that you are also a member of ? 😉 John always follows up my reports after the sometimes initial scepticism. Do we even agree that Feral-A is not a real factor in many cases there ? All we appear to have here is a rerun of the High Res is BS dogma from the measurements are the be all, end all crowd. Well, I have news for you guys, you lost the battle years ago, and millions of people worldwide are able to hear improvements over RBCD with SACD. high res LPCM (24/96 and 24/192), and now DSD of different varieties Hell , they can also hear improvements with modern Vinyl recordings of wider bandwidth than previously.(>30kHz in many cases) over typical RBCD. AND, there is NO putting the Genie back in the Bottle, as much as Hydrogen Audio and others would like to be able to do. 😋 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Popular Post sandyk Posted October 3, 2020 Popular Post Share Posted October 3, 2020 21 minutes ago, PeterSt said: Frank and Alex, a small reminder that this board is for objective stuff. I am well aware of this, but you also often reply to stuff aimed at you that is not necessarily fully on topic as the dig at me by Paul obviously was. Where else in this thread have I posted anything that was not appropriate? I am also quite entitled to employ the Disagree or Like buttons as I have been doing.. manueljenkin and pkane2001 1 1 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 3, 2020 Share Posted October 3, 2020 3 hours ago, pkane2001 said: Blue is the original sinewave at 1kHz, white is the "processed" one. Sampled at 176kHz. I offset the derived/processed curve a little in Y so it's easier to tell them apart: Can you repeat that at 10kHz ? After all ,you keep stating that 16/44.1 is more than good enough for clean and accurate sounding audio, not just Telecoms grade audio. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Popular Post sandyk Posted October 3, 2020 Popular Post Share Posted October 3, 2020 Just now, pkane2001 said: Where did I state any of this? And what does the frequency of the sine wave have to do with Manuel’s claims of aliasing? A recent example. Quote But there are also plenty of studies that show humans can't hear much above 20kHz, and this also gets significantly worse with age. So, even if we are missing some components of the Heaviside function in the recording above 22kHz, is this really significant for audio reproduction (for humans)? In your replies , you aren't just sticking to Manuel's claims of aliasing. I note also that you picked a nice and easy 1kHZ sinewave to illustrate your point, then showed that you really needed way more than 16/44.1 to properly clean up the waveform, which is a good argument for 24/96 or 24/192 , and is inconsistent with your view that we need no more than 16/44.1 for clean and accurate HIGH FIDELITY Audio with a bandwidth approaching 22kHz. PeterSt and Summit 2 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 4, 2020 Share Posted October 4, 2020 Just now, jabbr said: Forget audibility, let's take a real world transient sound, like a rifle shot, or a clap, or whatever. Even a sneeze has components WAY above 22kHz. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 4, 2020 Share Posted October 4, 2020 8 hours ago, pkane2001 said: At the risk of being reprimanded by Alex and Peter for being off topic, here it is :) https://www.head-fi.org/threads/chord-electronics-dave.766517/page-270#post-12770432 Ask Miska or Paul R, as their Naval service let them clearly hear differences below the noise level (Submarines) Miska provided training in that area , IIRC. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 6, 2020 Share Posted October 6, 2020 10 hours ago, Jud said: Combining these first and second points, though, leads me to wonder if the system (not forgetting mics and speakers as well) should be set up to reproduce frequencies in excess of 20kHz in order to give us the proper perception of some of the sharper/faster initial attack transients. Jud IIRC, you have wider bandwidth speakers than many members (To 40K?) I bet that if you replaced them temporarily with typical speakers that start to die off rapidly at 20K you would have at least part of your answer Kind Regards Alex P.S. Have you tried listening to some of the comparisons from Barry Diament's Soundkeeper format comparison page ? How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
sandyk Posted October 8, 2020 Share Posted October 8, 2020 1 hour ago, Jud said: From your lips to producers' ears. 😉 I found they happened occasionally in my listening without attenuation (admittedly not all of which has aspirations to high fidelity). - Do Hills With HQPlayer, -3dB seemed to be enough for virtually everything I tried. I feel sure that Barry Diament won't mind me quoting him here. Quote It wasn’t long after the earliest days of digital that engineers that were paying attention started to stay clear of 0 dBFS. Nowadays, I’d never let a digital transfer go over -0.3. That is digital to digital. For analog to digital (in other words, the first time a signal is digitized) I always stay below -6 dBFS. Why? Because every monolithic A-D converter of which I’m aware will exhibit considerably lower distortion at -6 (or -10) than it will at higher levels. Especially since we’re using 24-bits today, I’d rather hit digital at -20 maximum level than -2. Final levels can be adjusted later, in mastering. jabbr 1 How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
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