danadam Posted February 25, 2019 Share Posted February 25, 2019 22 hours ago, Lee Scoggins said: Your tinnitus may be impacting the frequency range but recent research suggests we hear timing distortions down to 5 microseconds well into our 70s. Maybe you are doing okay on hearing the timing elements. 5 µs, so still well within the limits of what RBCD is capable of. Jud 1 Link to comment
danadam Posted April 16, 2019 Share Posted April 16, 2019 Google finds exactly one other result for the phrase "extolling the futility" 🙂 Link to comment
Popular Post danadam Posted October 1, 2019 Popular Post Share Posted October 1, 2019 19 minutes ago, firedog said: The $6000 DAC referred to is apparently the PS Audio DS; the Total DAC Amir measured was a $13000 model. $6'000 DAC has SINAD 75 dB and $13'000 DAC has SINAD 84 dB. A clear improvement worth paying for. I don't know what you people are complaining about 😉 esldude, crenca, lucretius and 1 other 4 Link to comment
Popular Post danadam Posted August 24, 2020 Popular Post Share Posted August 24, 2020 1 hour ago, The Computer Audiophile said: MQA is really an exercise in consumer psychology, not demand driven by product superiority or meeting a consumer need. Thank goodness the rest of audiophile market is not like that. 😉 Jeff_N, daverich4, Tintinabulum and 2 others 5 Link to comment
danadam Posted December 9, 2020 Share Posted December 9, 2020 1 hour ago, lucretius said: Note that mansr's last statement (re 14-bits) contradicts what he said about 15 bit PCM/1 bit MQA files. 15-bit comment was about MQA-CD, 14-bit comment could have been about MQA non-CD. Cebolla 1 Link to comment
Popular Post danadam Posted December 9, 2020 Popular Post Share Posted December 9, 2020 1 hour ago, lucretius said: And where does filter selection and sample rate fit in? Here is MQA bitstream description from mansr: https://code.videolan.org/mansr/mqa/-/blob/master/mqa.rst I'm guessing filter selection and sample rate would be in "render_filter" and "orig_rate" fields of datasync packet. Don Hills, bogi and Cebolla 3 Link to comment
danadam Posted April 7, 2021 Share Posted April 7, 2021 I always thought that "white glove" processing meant: carefully prepare a new master (in good old PCM, mind you) encode it in MQA, the usual way release to public only the encoded version and keep PCM master in safe which would not entirely apply in case of BC because, presumably, the master they release in FLAC/DSD is already a carefully prepared master. Confused 1 Link to comment
danadam Posted April 22, 2021 Share Posted April 22, 2021 On 4/20/2021 at 7:33 PM, GoldenOne said: The fact that amir has suddenly 180'd from his usual stance that gear can be evaluated solely using steady state signals and ideal test conditions, to now saying that this testing is invalid because it doesn't represent music, is rather odd..... Did you infer that, for some reason, from what he said about testing lossy codecs? Or did he actually said this about testing gear? Got any links to that? On 4/20/2021 at 8:51 PM, Dr Tone said: He's been an MQA fanboy for a while. He sells a few high dollar MQA pieces through his business, bashing MQA wouldn't be good for that business. Is it still the same "fanboyism" that charlesphoto was talking about: Or does not bashing equal being a fanboy nowadays? On 4/20/2021 at 11:04 PM, Samuel T Cogley said: I call shenanigans!!! We know a lot about the performance of CODECs such as MP3 and AAC because..... TEST SIGNALS!!! Do you have any examples? All I'm aware of are only listening tests on hydrogenaud.io but they use music samples. Apparently there are some AES papers about testing codecs, but they also use music samples: https://www.audiosciencereview_AUDIOPHILESTYLE_IS_CHILDISH.com/forum/index.php?threads/mqa-deep-dive-i-published-music-on-tidal-to-test-mqa.22549/post-753835 Unfortunately it is amirm's post, so it probably doesn't count on this forum. 18 hours ago, Currawong said: This is how hate-forums start: They pick a manufacturer they don't like, and then fanatically go on and on about how everything about that manufacturer's products are bad. It's funny that you wrote that in this thread in particular :) Ishmael Slapowitz, MikeyFresh, Samuel T Cogley and 1 other 4 Link to comment
danadam Posted April 22, 2021 Share Posted April 22, 2021 16 hours ago, The Computer Audiophile said: If you don’t like AS, you are free to leave at anytime. Er... ok. Thank you for informing me about this fact, I guess. Other than the link annoyance it's mostly fine, though. But I get the message. I will refrain from expressing my opinion on the link switcheroo in the future. 16 hours ago, Ishmael Slapowitz said: What color are your ASR knee pads? Do they have the ASR logo on them?😅 See! This is the quality content I visit this forum for. What's not to like? Ishmael Slapowitz 1 Link to comment
danadam Posted April 23, 2021 Share Posted April 23, 2021 21 hours ago, The Computer Audiophile said: You do know why I had to disable links, right? I think I remember you writing something about spamming. Assuming that's still the case, wouldn't it be enough to just turn the link into a text? So it can be just copy-pasted? And if not, than surely it would be enough to modify it only in one place instead of three: www.Xaudiosciencereview.com/foobar Hell, you could even include the reason why: www.audio “science” review ANTISPAM.com/foobar Selecting and deleting a single word is still less annoying than editing the address in several places. But that of course would not include a chil..., sorry, a dig at their name. Link to comment
danadam Posted May 1, 2021 Share Posted May 1, 2021 1 hour ago, Archimago said: FLAC Level 0 compression??? 🤪 The official FLAC reduces size even at level 0. Here's some discussion about no compression: https://github.com/xiph/flac/issues/73 Link to comment
danadam Posted May 17, 2021 Share Posted May 17, 2021 24 minutes ago, lucretius said: Proprietary format Not since 2011 (according to wikipedia). https://macosforge.github.io/alac/ Quote The Apple Lossless Audio Codec sources are available under the Apache license. lucretius 1 Link to comment
danadam Posted May 22, 2021 Share Posted May 22, 2021 29 minutes ago, GoldenOne said: The spectrogram view is showing only up to 22khz, not 44khz Er... that looks like a logarithmic axis, I'd say it goes to 44k. GoldenOne 1 Link to comment
danadam Posted May 26, 2021 Share Posted May 26, 2021 2 hours ago, vmartell22 said: Hrm - very disappointing. It is merged now to the previous thead: CUTTHIS_audiosciencereview.com/forum/index.php?threads/mqa-deep-dive-i-published-music-on-tidal-to-test-mqa.22549/post-795573 Currawong 1 Link to comment
danadam Posted June 3, 2021 Share Posted June 3, 2021 7 minutes ago, Currawong said: Then he should have added something like "With one exception in the past...". So something like this?: On 6/2/2021 at 11:08 PM, John_Atkinson said: With one exception - an exception that was agreed to before I joined the magazine opus101 1 Link to comment
danadam Posted June 7, 2021 Share Posted June 7, 2021 34 minutes ago, skikirkwood said: And along the way, learned about the X-Frame-Options DENY directive to block any site from iFraming a site. The fact that Stereophile has not set this simple setting in all of the years of its online existence, but instead is threatening Chris with legal action over an iFrame embed, pretty much speaks for itself in so many ways. Are you suggesting that Stereophile has control over superbestaudiofriends.org servers? 😉 (to be clear, I'm not saying that lack of such control is an excuse to threaten for linking) Teresa 1 Link to comment
danadam Posted June 7, 2021 Share Posted June 7, 2021 26 minutes ago, lucretius said: Must have increased traffic at SBAF as well. Yeah, but it is a link directly to an image, not to a post, so I'm not sure if they'll be thrilled about it 🙂 Link to comment
danadam Posted August 24, 2021 Share Posted August 24, 2021 1 hour ago, Pierre LeMonf said: If one unpacks an MQA FLAC file to WAV or AIFF, does it retain the MQA tags? It depends what you mean by "MQA tags". If you mean the bitstream instructions that make the mqa-capable DAC's LED light up, then yes. If you mean the FLAC tags related to MQA, like: ENCODER=MQAEncode v1.1, 2.3.3+862 (3fe8af8), DF77A107-A71F-4E57-A322-872C6D0E99C8, Jan 01 2018 01:09:00 MQAENCODER=MQAEncode v1.1, 2.3.3+862 (3fe8af8), DF77A107-A71F-4E57-A322-872C6D0E99C8, Jan 01 2018 01:09:00 ORIGINALSAMPLERATE=352800 then usually no. 1 hour ago, Pierre LeMonf said: Also, if one converts to lossy MP3 or AAC, same question, does it retain the MQA info? In this case the bitstream instructions are lost too. Link to comment
danadam Posted December 8, 2021 Share Posted December 8, 2021 47 minutes ago, yahooboy said: I am aware that the "gap" moves with the sampling rate Ah... so when Focus said "MQA, when given a 2x or more source, has a mechanism for passing the part between 24kHz and 48kHz" then you actually agreed with that, and "Sorry but I have to disagree" was only a typo? 😉🙂 Link to comment
danadam Posted January 4, 2022 Share Posted January 4, 2022 9 hours ago, Revelation said: The main difference D50 has ESS ES9038Q2M Sabre chips,and the D70 has dual AK4497 DAC chips. What does this have to do with anything? The price difference between D90 with and without MQA was about 100 ($ or €): https://apos.audio/blogs/news/topping-d90se-vs-d90-comparison-chart At audiophonics.fr (but discontinued): D90 non-mqa 749 €, D90 mqa 849 € watts 1 Link to comment
danadam Posted January 17, 2022 Share Posted January 17, 2022 13 minutes ago, The Computer Audiophile said: That's a bridge too far in my opinion. Sorry, but I'm mightily confused. The study says that the participants didn't hear differences. Both you you and botrytis seem to agree that this is what the study says. Then botrytis says he himself heard a difference. Ok, fine, whatever. Then he says the study confirms what he heard. How? Link to comment
danadam Posted September 8, 2022 Share Posted September 8, 2022 On 9/6/2022 at 10:02 PM, The Computer Audiophile said: I just happened to check this out a few minutes ago and couldn't believe how bad it is. This is Tracy Chapman Talkin' Bout A Revolution. I first played the mQa version, the only version available from Tidal, then the CD version that's available from all other streaming services and the actual CD. Rather than Talkin' Bout A Revolution, it should be called Talkin' Bout Juicing the Volume! I just hit record with my iPhone, sitting in my listening chair. Nothing special. The attached audio goes along with this image. The first music is the mQa, followed by CD. So... those other services, were they more like Tidal or more like the CD? 4 hours ago, skraggy said: However, this is not exclusive to Tidal: I just compared my own CD, Tidal and Qobuz and both streaming versions sound the same to me, but they are undeniably much louder than the CD. I don't have any measuring gear other than my phone, but I'd say Qobuz and Tidal are approx. 7-8 dB louder. Yes, exactly: DR, Sample peak, RMS, Loudness, LRA 9, -0.05 dBFS, -13.84 dBFS, -10.8 LUFS, 6.6 LU - qobuz/01-01-Tracy_Chapman-Talkin_Bout_a_Revolution-LLS.flac 14, -0.80 dBFS, -20.00 dBFS, -16.9 LUFS, 10.3 LU - cd/01. Talkin’ Bout a Revolution.flac but shush 🤫, I'm sure it's still mqa's fault 🙂. The Computer Audiophile, MikeyFresh and botrytis 1 2 Link to comment
Popular Post danadam Posted September 1, 2023 Popular Post Share Posted September 1, 2023 1 hour ago, Fx Studio said: Check this version best to start it playing at the same time as the video (but with the video volume OFF) then you will know which is FLAC and which is MQA. https://drive.google.com/file/d/1eh5gqnkmW8tcoI0u2O_EHl04FhIM1KAi/view?usp=sharing Well, the original flac is no longer available, I wonder why 😉 The audio in the youtube video is undoubtedly mono in the flac parts. Here's how it looks like when you subtract right channel from the left channel: And the first thing that jumps out in the new flac file is that the channels are swapped between flac and mqa parts. Currawong and maxijazz 2 Link to comment
danadam Posted September 1, 2023 Share Posted September 1, 2023 42 minutes ago, Fx Studio said: But it is interesting that you spotted that the MQA is the better sounding of the two. I did no such thing. Or did you mean that I spotted a difference between mono and stereo? Well, yeah, but what does it have to do with mqa? MikeyFresh 1 Link to comment
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