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Post by stellabagpuss on Oct 11, 2022 8:36:38 GMT
Great Post, and funny really,lt's the reason l play local files only.Sure l have had a play streaming, but to my ears, l prefer local files.
That said, l totally get why it's popular, discovering new stuff,my habit is to do so, low fi, via a phone speaker 😆, and if l enjoy it, l download it,for replay on Hi Fi setup.
Without opening a can of worms, l transfer all Flac files back to WAV, as l can tell a small difference, when ABing, WAV is more relaxed, that's not to say Flac is terrible, just something l picked up on years ago using headphones.
l find interesting that users find one service better than another soundwise,is that do to the codec they can use?
l would Say Streaming is 90% their, if you want that missing 10%,stick to local.
Damien
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Post by HD Music & Test on Oct 11, 2022 9:08:01 GMT
He's a really interesting fact both Flac & Wav are bit perfect lossless, though wav is the full fat BW user. Flac is a true lossless compression version. They should by rights have zero difference, "The amount of compression is determined by various parameters, including the order of the linear prediction model and the block size. Regardless of the amount of compression, the original data can always be reconstructed perfectly. "Now step into the real world Now SW is used to create both of these codec's and over the years I have found differences, small but repeatable differences between the two formats, not possible? maybe not? BUT something is going on? IMHO has to be in the SW aspect of this, I have the ability to view this in real time on several test devices, so in the near future I will set up an experiment to investigate this. Must be psychophysics right?, the asr users great get of shite quick card, sorry don't buy it, it is repeatable. In all of the copying devices I have whether PC or streamer based, they results aren't all the same, they are still small differences BUT each device may carry their own proprietary copying SW algorithm. Here is my take after 25 years of working with digital audio hardware and studio recordings. If you have a flat sounding CD try flac, I found it gives a bit more prep to the sound, and immediacy
Wav if you have a hot sounding cd, I find gives greater depth, three dimensions and a more relaxed sound.
Last thought for you CD's arn't bit perfect and use a CRIC (error correction factor system) to counter any possible defects in the phyiscal medium itself (the disc lol)
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Post by stellabagpuss on Oct 11, 2022 9:26:31 GMT
Phew Tony, thought l was going out on a limb sharing those thoughts with Flac, glad you confirmed, l am not going 🤪 crazy
Damien
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Post by MartinT on Oct 11, 2022 9:31:39 GMT
FLAC is reconstituted to WAV before hitting the DAC. The one difference I can think of is that decoding FLAC requires more CPU cycles. That causes more PSU glitches, memory fetches and writes, etc.
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Post by HD Music & Test on Oct 11, 2022 10:39:33 GMT
FLAC is reconstituted to WAV before hitting the DAC. The one difference I can think of is that decoding FLAC requires more CPU cycles. That causes more PSU glitches, memory fetches and writes, etc. As I mentioned they are both bit perfect, so theorectically absolutely zero difference. I'm pretty convinced it's in the SW that creacting the files themselves, we know for a fact that increased CPU/microprcoessor/FPGA activity generates more electrical & EMI/RFI noise. This maybe a contributing factor along with a couple of other ideas I have including ISI (Inter Symbol Interference)
I will be looking into this in my depth around Xmas, it's been on my to do list for a long time along with T/Base 100 ethernet experiments.
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Post by HD Music & Test on Oct 11, 2022 10:45:17 GMT
I would point out that if you start with a raw digitally recorded file from the outset, not a CD copy you may find the results a little different.
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Post by stellabagpuss on Oct 11, 2022 11:44:16 GMT
I would point out that if you start with a raw digitally recorded file from the outset, not a CD copy you may find the results a little different. Brings back memories of CD Lathe and Green Marker Pens 😆 The quest for improvement
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Post by HD Music & Test on Oct 11, 2022 12:48:35 GMT
Bare minimum at least, but here's another rub, rip a cd before doing any of the six treatments the rip it again and compare, can't be any different? After all you can't change the data on on the pits and lands impossible, though I wonder if after making the data far more 'visable' to the photodiode creates less error correction needed to identify those dips or flat
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Post by stellabagpuss on Oct 11, 2022 16:31:08 GMT
Back in the days, when l had a CD Lathe, l did quite a few experiments. Latheing on certain Disc's would sometimes transform the sound,alot of disc where not perfectly round, so they would wobble in standard format,making it hard work tracking the CD. Funny how digital still needed accurate mechanism,almost analogue on the physical media. Using CDR was interesting, where you can hear the difference, however the biggest shock was burning on Black coloured CDR, it would sound better, l'm guessing it was down to a reduction in laser light reflections, l certainly enjoyed those days, but glad l have abandoned CD generally.
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Post by HD Music & Test on Oct 11, 2022 16:38:45 GMT
You als0 had the Nespa (even better), Demag, cleaning bath, lathe plus two chemical treatments, anyone who wishes to hear the difference , I have around 2000 fully treated CD's its quite an ear opener.
This is when I realised that optical media (CD/SCAD/DVD-A/Blu Ray's are all flawed as good as they can be. So why not bypass this conversion problem of mechnical rotation/light<> electrical<>I2s<>reciever chip<>clock<>PLL<>Dac chip
The original master file via chip based storage from a digital file with zero optical translatio so to speaker significant improvment no question.
Damien, Mike music has a full suit of CD treatments he can comment on this as well I suspect.
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Post by MikeMusic on Oct 11, 2022 18:57:16 GMT
I do have a suite of CD treatments They are all good
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Post by HD Music & Test on Oct 12, 2022 6:23:42 GMT
Just spotted this
You have listened for yourself at home Mike and even commented on here a few years ago but you were somewhat surprised. Using your own dac inside the Tad player you have had first hand experience of this.
I haven't listen to CD's personally for close to 16 years, we still demonstrate CD's for customers from time to time. like vinyl its not high on the priority list.
Once the CD has been copied it will produce a better no question if you have the right devices.
Only part of the replay, if you have a genuine digital non screwed around tidal wanked about stream then it can be quite something
Although I would suggest that the vast majority of quality playback is generated at red book level 44.1Khz would hazzard a guess that 90% of all of my .85Pb storage is this playback rate.
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atoz
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Post by atoz on Oct 12, 2022 8:43:14 GMT
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Post by MikeMusic on Oct 12, 2022 9:00:23 GMT
Just spotted this You have listened for yourself at home Mike and even commented on here a few years ago but you were somewhat surprised. Using your own dac inside the Tad player you have had first hand experience of this. I haven't listen to CD's personally for close to 16 years, we still demonstrate CD's for customers from time to time. like vinyl its not high on the priority list. Once the CD has been copied it will produce a better no question if you have the right devices. Only part of the replay, if you have a genuine digital non screwed around tidal wanked about stream then it can be quite something Although I would suggest that the vast majority of quality playback is generated at red book level 44.1Khz would hazzard a guess that 90% of all of my .85Pb storage is this playback rate. From memory ... The Nova Fidelity (X40 and X45 ?) were not as good as the Rega Isis playing CD but equalled it from file. I assumed the TAD D-1000 would be better than files from a Nova Fidelity or only marginally worse off. Do you think that files ripped from a CD and onto the Nova would sound better, how much ?
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Post by ajski2fly on Oct 12, 2022 9:07:25 GMT
I have been reading this thread with some interest and it has raised some good points. However I still find some of the issues raised around digital music somewhat perplexing, here are some of my observations.
I state this having been a very early advocate of CDs, from 1983 when first appearing in shops, my vinyl collection was ditched and we ended up with over 800 CD in 10 years. I went through various CD players to try and get something that sounded good, each time becoming more expensive, the music and hifi industry kept telling me CD was the best, so I persisted. Then MP3 players and equivalents came along in the late 90's, and a mass rush to this happened, even I foolishly started using the format, only to quickly become even more disappointed with the poor SQ, and the wall of sound wars made matters even worse. I even transferred all my CDs to a NAS drive around 2005, I have now done this twice to ensure I gained the best possible clean data transfer on the second time.
In the end I conducted many digital file comparisons of different formats from low to high level frequency various bit levels, and ensured as much as possible they were from same original master tracks, very few gave me a warm feeling, it just proved to me that the majority achieved average to poor SQ. Although a high quality CD on my Meridian 508 sounded pretty good, but this was hit and miss. somewhat confusing as the redbook 44.1khz/16bit was chosen as a level that achieves a high sound quality for human hearing, but it was apparent not all CDs are equal. So I just gave up completely and stopped properly listening to music at home or owning anything that might be called HiFi for over 10 years.
When I eventually came back to listening to music for pleasure it was mainly with vinyl, I had been given a very nice selection of albums, and selected known good quality CDs or SACDs. A gradual process of Hifi upgrades were undertaken, mainly Amps, speaker and Turntable until I got to the system I enjoy the sound of and own now.
Then digital streaming became a viable possibility and about 4 years ago I put my big toe into that pond in the hope that it may prove that the digital medium had reached a level that could produce a good and consistent level SQ. Initially a RPI/Hifiberry running Volumio, I still use this for casual reliable listening, then a Sonore microRendu into the DAC of the Audiolab 8300CDQ, not top end stuff I know but both produced reasonable sounding music without an enormous outlay.
Unfortunately I have found it all to be somewhat disappointing, but occasionally it can be sonically rewarding. Why am I disappointed? My observations are that the industry, music and electronics(LoFi/Hifi) have continued to state digital gives the best SQ and VFM, but IMHO that is really not true is it? I find it very frustrating that even now if you want to consider using digital as a serious listening medium for streaming you need to consider, using 4G/5G bluetooth rather than the normally used broadband, and then you need to consider cleaning ethernet up, before getting to the streamer/DAC, technically Wifi/Bluettoth streaming just leaves the medium open to interference, so hard wiring or optical is required, although many as I see it tend to ignore this, and then there is re-clocking to get the best from the digital stream. We are 40 years down the digital music road, surely manufacturers could and should have resolved these issues cheaply and simply and in a same box solution by now, but it appears not, maybe they do not want to? Currently as it stands to me it appears that to reach digital nirvana the cost certainly is not cheap, from my understanding at least £5-10k needs to be considered just to address the digital processing prior to the analogue signal reaching a pre-amp.
Then as others have suggested putting high quality digital music on solid state devices to play directly from gets the best results, but this still means more costs and still raises questions about how and from where you achieved that? And of course there is the hoary old topic of the quality of the digital files and where and how they were originally sourced, I think most of us on here would accept that TIDAL has been shown to be very questionable in this area. Spotify is also IMO not all that is appears even at Premium level streaming at its servers they can be throttled at peak times so you may not be getting what you think when you listen, I suspect this may be true of other Streaming providers as well.
I have raised many issues questions here I realise and some may be contentious, yes digital can sound good to me it feels rather contradictory that this can only be achieved to a high level with a high cost and often with unnecessary complexity to achieve that for the end user. I completely accept that other music mediums have their issue as well and vinyl can easily go from poor SQ to outstanding depending on various variable in the process from creation the what is used to reproduce it, but digital music seems to have ended up going down the same rabbit hole and possibly more so.
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Post by HD Music & Test on Oct 12, 2022 9:16:38 GMT
From memory ... The Nova Fidelity (X40 and X45 ?) were not as good as the Rega Isis playing CD but equalled it from file. I assumed the TAD D-1000 would be better than files from a Nova Fidelity or only marginally worse off. Do you think that files ripped from a CD and onto the Nova would sound better, how much ? That was the first visit back in 2017, the second one was 2018 was the 50D Actually Mike we played direct into the Tad's dac's
One of the demo's we do is to play the cd on the Tad's internal drive, then rip and play it through the X50D/pro EVEN you were suprised. (zero DDC's then either)
We have a 100% take up rate with all of the Tad/Eso/Dcs/Rockna dac owners when their dac's are fed via a quality ripper/streamer.
The question for you Mike is can you hear it? as I have mentioned before on the matter. You have unique hearing and these tweeks you play around maybe provide a better solution for you as my feelings are they are affecting those hearing frequenices that you can easily descern far more readily due to your audiable circumstanices.
The other fly in the oniment would be interacting with technology Mike, something your not to keen on at the best of times
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Post by HD Music & Test on Oct 12, 2022 9:25:02 GMT
I have raised many issues questions here I realise and some may be contentious, yes digital can sound good to me it feels rather contradictory that this can only be achieved to a high level with a high cost and often with unnecessary complexity to achieve that for the end user. I completely accept that other music mediums have their issue as well and vinyl can easily go from poor SQ to outstanding depending on various variable in the process from creation the what is used to reproduce it, but digital music seems to have ended up going down the same rabbit hole and possibly more so. I have the same feeling with vinyl Adrain. Only twice I have it found it wholesome and accpatable. If it's your bag, why worry? stick with what you love. If your a TT nut and have been listeing to records for 30 years plus nothing is going to sway you then just play vinyl be happy
You can imho put to gether quality all digital system for around £8K (including amp and speakers) that will keep many people very happy, others will wish for more.
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Post by MikeMusic on Oct 12, 2022 9:35:59 GMT
I only remember comparing Isis to Nova Fidelity. If the TAD had been compared I could have had a different system a long time ago. No contest if I were buying from scratch and choosing between the Isis and the Nova as it offers more features than any CDP. No brainer for Paul I thought when he bought a Nova from you
If the difference is that big VFM comes into play, but - I have often thought about the Nova for the extra features it offers. Does the X50 allow me to record direct from LP and my unique reel to reels ?
The tech looked middling complicated. Being set up, guided and left to play for a while should sort it
This is the X50D not the Pro ?
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Post by HD Music & Test on Oct 12, 2022 9:51:29 GMT
Adrain thinking about this, seriously get your self a listen to a X26 dac and sensible digital transport it will surpise you if you are traditional vinyl head its cost is £1400.
Although much the asame as a good deck need a decent arm/ quality cart/ phone stage and cabling, you will require similar treatment of the digital chain but not to the same degree.
Back when I first started with audio the shop onwers would sneer at you if you mentioned digital, but it also it genuinelly cost more to obtain a close proximity to how vinyl sounds usually three times as much now things have progressed and its the other way round, a good respectable £4K streamer can easily compete with £3K deck/2k ARM/ 1.5k cart plus a phonostage of around £1K+ which one you prefer is your choice, but the lack of boxes, ball ache and music libary restrictions and more often than not SQ are now big deciding factors on how people purchase.
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Post by ajski2fly on Oct 12, 2022 10:39:38 GMT
Adrain thinking about this, seriously get your self a listen to a X26 dac and sensible digital transport it will surpise you if you are traditional vinyl head its cost is £1400. Although much the asame as a good deck need a decent arm/ quality cart/ phone stage and cabling, you will require similar treatment of the digital chain but not to the same degree. Back when I first started with audio the shop onwers would sneer at you if you mentioned digital, but it also it genuinelly cost more to obtain a close proximity to how vinyl sounds usually three times as much now things have progressed and its the other way round, a good respectable £4K streamer can easily compete with £3K deck/2k ARM/ 1.5k cart plus a phonostage of around £1K+ which one you prefer is your choice, but the lack of boxes, ball ache and music libary restrictions and more often than not SQ are now big deciding factors on how people purchase. I am not anti-digital, just previously dissappointed with the end results, but not all the time. I don't think vinyl is necessarily better just a different medium, CD, Streaming, Vinyl and tape all have their issues. I presume you are referring to a GUSTARD DAC-X26? What is a sensible transport in your experience? I have been considering improving the digital streaming side, as lousy for ease of use and as it opens your world to a large catalogue of music. If I did then I would likely streaming the LP collection down to all time favourites, and a few collectables, an undertaking in its own right. As an alternative what all in one box streamer do you consider a good solution, there are so many to choose from it is a maze? Whatever I went for I would want it Roon/Qobuz ready. Cheers Adrian
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