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FredericV

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  1. THX for letting me know, google found it: https://darko.audio/2017/07/kih-46-mqas-missing-link/
  2. I have family in Germany, so let's see if we can get an account via them.
  3. I guess we need Amazon Music Unlimited for the ultra hd, and not Amazon Prime Music? https://music.amazon.com/EU/help?nodeId=202204440 Belgium, Bulgaria, Cyprus, Czech Republic, Estonia, Finland, Greece, Hungary, Iceland, Ireland, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Slovakia, and Sweden Amazon Music Unlimited Update: the service works, but how do I see what resolution I'm in? Not seeing ultra HD. Using the desktop app on windows 7. Also have W10 but prefer 7. Using my amazon.de account, I can clearly see the Ultra HD page: https://www.amazon.de/music/unlimited/hd But when I click on the 90 days offer, on the next page I cannot switch my subscription to Ultra HD. So probably limited to Germany only?
  4. To my surprise, Tidal has no MQA version of this track "3.9_3-wo-ai-ni.0cc", just a redbook version - but for those who have seen the show, this sounds great in both redbook as on the Blu Ray version of season 3 - which is 24 bit 48 Khz: One of my FB peers seems to be able to see the 24/192 version on Amazon: Too bad Amazon does not publish an API
  5. In France, this is one of their favorite demo tracks, which you should play when doing demo's and shows: Track: Melody Serge Gainsbourg Histoire De Melody Nelson - 40ème Anniversaire
  6. My files are different, and some indeed hear differences. Please send those files to me for further analysis.
  7. Tidal and the x and y files on my own server are served via HTTP. HTTP guarantees bitperfect transmission. If you hear a difference from 2 files which both have the same cryptographic hash, you either are very good at breaking crypto (which I doubt) or you have a different issue. Off course x and y are different files, but if you download x twice and hear a difference between both copies, then something is obviously broken
  8. His comments confirm what we already knew: MQA and their partners work with hired guns. After just hearing an interview on a local radio station how influencing works using a large existing social network, I am more and more convinced our famous now banned shill who founded the secret group, is a "key opinion maker". This term was described in former MQA financial statements.
  9. Why would we care? 24/96 multi-channel blu-ray already exists, e.g. this movie from 2013: https://www.blu-ray.com/movies/Samsara-Blu-ray/51257/ This blu-ray has an average bitdepth of 32 Mbps and thus can be streamed on most broadband connections. Both audio & video are among the best on this format. In Belgium, cable ISP's now offer 300 Mbps to any customer, and for a few euro's more per month, we get gigabit. But most video content only has a 48 Khz samplerate, and 96 Khz audio is very rare. Furthermore I can also stream 4K + Dolby Atmos, so why would I care about a niche player like MQA who needs to fight against the big boys such as Dolby & DTS? In Belgium we also have our own multi-channel immersive 3D format, which is Auro-3D, and while some AV processors & receivers have it, the content is very rare as this is a niche format. Even DTS:X is a small format compared to Atmos, and from a much bigger player than MQA. We must also accept the fact, that even though Bob's previous format HD DVD failed, it was recycled into the codec behind Dolby TrueHD, so MQA may one day also be recycled into another codec: https://the-jh-movie-collection-official.fandom.com/wiki/Dolby_TrueHD We are already seeing this off the label marketing now with MQA Also, Ultra HD Blu-ray has a peak bandwidth of 128 Mb/s, which means 4K players on a 100mbit network may stutter actually. But UHD has far less compression than Netflix, which only requires 25 Mbit for 4K, and a lot more fine details are visible with UHD BD. During high motion, this will become more obvious. Our 32 Mbps 1080p example for a blu-ray with 7.1 24/96 audio is not far off the Netflix max bandwidth requirement. Furthermore with more efficient codecs, 4K can be encoded in the same bandwidth as our old 1080p content from 10 years ago. The Blu-ray standards are at least a decade old, and we now have much better video codecs, which is why Netflix can get away with only 25 mbit.
  10. With 5G and home ISP speeds where MQA's compression scheme no longer is a USP for saving bandwidth, it's obvious they fear the shelf life of their solution has almost expired, and claiming the 5G marketing is misleading, is very weak. They should buy a big mirror as MQA's marketing is misleading. It's not the studio master, not the quality, not authentic. It's not lossless ... If you limit hi-res to 24/96 flac with entropy optimization, you can still outperform MQA's compression scheme, for which the secret DRM'ed part does not compress at all using FLAC. For anything higher than 24/96, MQA is not even encoding that data, with the result that a 24/96 or 24/384 MQA file of the same master, both distributed as 24/48, will be about the same size, with the main difference in the metadata where they tell the render to upsample ..... so it's like cheating. MQA compresses so well because it's not encoding all the hires data. If that matters or not is a different discussion. I still prefer 2L.no's DXD versions over the weaker MQA counterparts. I even baited into the GO LISTEN argument and bought that MQA studio DAC .... but I still prefer the real master.
  11. Were they inspired by MQA? "malware operators are experimenting with using WAV audio files to hide malicious code" https://it.slashdot.org/story/19/10/20/200249/wav-audio-files-are-now-being-used-to-hide-malicious-code MQA also hides crypto DRM data inside WAV files, then compressed as flac encoded distribution files - for which the flac encoder has a hard job as it's non-audio data. This data is only available to be decoded by licensed decoders. So if a WAV file does not compress well with flac, it's either an MQA file or one of these crooks spreading malware ....
  12. With the background noise in most cars, it's completely pointless to implement 17/96 (MQA's internal max resolution) or even real hi-res. There's also no point in 24 bit given the in car background noise. https://www.sciencedirect.com/topics/engineering/interior-noise At 120 kmh which is a legal cruise speed in many euro countries, it's around 60dB in the most quiet car, according to: https://www.auto-decibel-db.com/Lexus_LS_2013_600h.html Also note that most car infotainment systems mix several sound sources: - car audio playing - GPS sounds / alerts & vocal notifications - handsfree voice recognition "like call person X" and then the infotainment confirms via speech synthesis - and in some performance cars, fake engine noises are created to make the engine sound like a bigger car So we are talking about infotainment systems mixing several digital sources and probably also resampling steps as the sources to be mixed may not have the same samplerate. How would that even be compatible with MQA?
  13. The goal of this topic is also discuss routing tricks. One of the ideas is to limit the number of broadcasts the music server has to receive, so splitting up a big broadcast domain into smaller VLAN's, so the music server gets a lot less interrupts coming from broadcast network traffic not related to audio. I once had a small network with only one Linux box in it, dual homed, and our music server, and that one with the cheap PSU on a wifi router, sounded better than our busy network, with an Sbooster to a metal TP Link easy smart switch. So that got me thinking why non-audophile beats an audiophile setup. It's most likely also in the background broadcast traffic that you don't want the cpu to be interrrupted with. If you have a LAN with 2 hosts (router and one node) those broadcasts will be a lot less. If you have hosts with samba / windows file sharing, expect a lot more traffic from broadcasts, which all the nodes have to process.
  14. I recently bought the SOtM switch, but I found a big difference also in modding my router: So my current network stack which connects to our music server is: - Telenet Docsis modem-only (so no router / no wifi) - Microtik 13x gigabit router, with custom DC inlet and custom cooling, and 12V Sbooster Mk1 - SOtM switch with clock and 9V Sbooster Mk2 - Music server My idea is to order this Mikrotik router, as it has a 10 gbit SFP+ cage, so you can go optical between the SOtM and the router. It also has those enterprise / datacenter I want being a former network security engineer for companies such as Alcatel: RB4011 1. it has an SFP+ slot so it's future proof 2. it has the same cpu as their 13 port RB1100AHx4 model, which is the successor of my RB1100AHx2 3. maximum throughput should be similar to the RB1100AHx4 as they share the same cpu, so 7.5Gbit 4. it's completely passive cooled, so it tends to run a little hot - the whole case acts as heatsink 5. it has a DC input, so you can use any linear PSU with it, and most linear PSU's will handle it's amperage requirements Max power consumption without attachments = 18 Watts
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