EH, I believe this kind of holy war doesn't make sense anymore. Everybody, including casual readers, can see Jakob2's position, he placed himself in the same team with MM, T, SV, M4, MB, MH, JC, Z, ToS, JoG, JR, etc... I agree, his stances are of the most toxic kind, since it wraps the BS in a thick crust of theoretical knowledge, but I think ignoring is still the best tactic.
Those who want to believe in the FUD spread around will do it anyway, nothing will change that.
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I had to google anti-Vaxer!
What’s the term ‘a legend in your own mind’
J/k ....I have no idea the heroic status of a 1nV/rt Hz amp.
Nice, some talented friends! Looks like a good time, and congrats at marrying the guy off!
Cheers,
Howie
Then you'll have to start making your own recordings like Linkwitz for example
We used to have decent discussions, but recently anyone brave enough to speak in this forum is treated like the poor chap in this skit: YouTube
Howie
I have......some not too bad.
Chronicled a lot of ‘porch music’ (or bluegrass as most of the world knows it)
In the Appalachian mtns
It’s all on cd right now and I don’t have a reader at the moment but as soon as I get a way to post some I will.
But by source I meant (besides a decent recording) the gear (source/dac/amp/speaker) = total system
I have for a long time thought that Allan variance was important. For oscillators, the late Allen Wright and myself used a servo-controlled power supply +3.3V or +5V tuned to a ridiculously low frequency, so it took hours to reach one of those two voltages, so we were down around <0.0001 Hertz. Used supercap inside the servo to get it down that low. The lower we got, the better it sounded and we had to go a LOT lower than we thought was needed. I though that Allan variance definitely played a part.
Also, take for example BAW versus SAW oscillators. Now I don't make any claims to be any great expert on the subject, Terry Demol might be able to add something about this: That common BAW oscillators are harmonic whereas SAWs are fundamental and when I first came across them, their 'stability' was a selling point in the PDF brochure. That caught my eye and I got my hands on some.
There is something intrinsically right sounding about SAWs even if BAWs have their own advantages. Also, SAWs come in around 50MHz and up, so they are good for asynchronous Sabre DACs (rated up to 100MHz) and not suitable for other DACs requiring other lower frequency selections. I also got some 54MHz SAWs made and put it through a divider chip to get the common 27MHz I also needed.
But now supercaps are much more common and more commonly used in commercial DACs (like Chord does in their DACs). But for a cheap hit, get some 0.33F/5.5V and put them on DAC and oscillators power supplies, gets a benefit every time I have seen it done and it costs peanuts. I also put a largish ceramic SMD in parallel with it, up to 100uF/10V.
I think that stability is a big thing when it comes to digital playback. Has been thinking that for ten years.
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syn08
I am flattered you think I have any kind of belonging in this thread at all. If you think I am a team player, then think again. Right now I am listening to ‘Untrue’ by Burial. I don’t think you would like Burial.
ToS
Cute avatar, by the way.
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Thank you Howie, a lot of fun. Sound recorded only to Canon EOS camera, however it still keeps the atmosphere. Interesting
They don't use 'crap' was my point. Good starting place is their websites, where you could find things like CERN used to be able to detect trains coming into the station some km away as the station wasn't properly grounded. They are interested in the most minute details, but solve them using good engineering practice, not random glomming of boutique components onto a circuit. Yes they have cubic dollars to burn but they also have some of the best minds in the world trying to wring the last fractions out of the systems. Bur they still can't baguette proof their power feeds
Still trying to make people form up sides in the trenches?
Forget it. You are an agitator trying to foment trouble among good people. You should be ignored if that's all you are here for.
Andrew Wakefield is an evil man IMO. Anyone who experiments on children with no consent of any sort is scum.
Make sure you offer somewhere like the smithsonian a copy. This sort of recording should not be lost.
BTW assume you are away of the smithsonian folk archive Smithsonian Folkways Recordings There is enough free good music there to lose yourself for days!
Quite so, when MM says markw4's DAC observations should stand unchallenged I asked why they don't need to pass any kind of protocol and get nothing in response except more studies to read.
I certainly don't claim my dac observations should stand unchallenged. I know for a fact that I am sometimes wrong, and also that my opinions are subject to change as new information comes in.
Yes, I'm sure he has, but I'm not convinced he has heard a really good one. Too many negative digital comments.
Try to be just a little less combative and a little more receptive.
If you run all your up-sampling and format conversion in the computer using HQplayer, then go USB out to a JLsounds bridge (galvanically isolated and re-clocked) this can then directly feed a PCM1704 DAC and run it up to 24 / 768kHz. That sounds pretty Hi Rez to me?
This basically bypasses a whole lot of, to a larger or lesser degree, compromised crap, used in DAC's for the last 20 years - and improves upon it. IOW, no PLL driven VCXO's, no ASRC chips, no ASIC or even FPGA based digital filters.
The DAC side runs synchronous with fixed, very low phase noise clocks. Very simple, very effective.
I suggested this arrangement to Mark4 a long time ago to help him short cut development time, run Sabre in it's most primitive (and potentially highest performance) mode. You can then play with filters, modulators, direct DSD, in HQplayer and see what subjectively you feel matters the most.
Then it's a case of analog stages and power supplies. For the 1704, this is much easier, for Sabre it is more difficult, for the new AK4499, extremely difficult.
These are the reasons I suggested the 1704 (for John). It's a very 'analog' sounding DAC, will do Hi Rez but is not too hard to implement.
No good if you want DSD or to develop a new product.
Clear as mud?
T
On 2nd though, your post required a more thoughtful response than my previous reply.
It is a clever use of the transport to send 8x oversampled data, if that's what you are doing. That's how I would prototype / test a filter before implementing it in an FPGA. Still, you're limited to 96 kHz if you do an 8x OSF. I am not a fan of NON-OS, so I wouldn't be doing that. Not sure how you can get DSD into a PCM1704 though... no big loss for me, though.
I agree that running fully synchronous with the source is best and not really a fan of the ASRC-everything approach.
Still, I don't think John is the type to be tinkering with HQPlayer. I also don't think it would address any of his issues, because I suspect the issues are perceived instead of real.
Yah people are still paying the price....outbreaks of childhood diseases that never should have happened.
I never thought of sending any for archival(I did record the masters onto real gold archival grade cd’s).....this was around y2k through 2008 or so.....mainly did it for the love of the music, it was so ‘real’ in its own environment....many had never heard themselves recorded before except for cheap cassette decks and such.
I had a state of the art (then) marantz pro digital recorder with rode nt5 matched mics in xy configuration. Mixed it down with aphex and tc electronics to a tascam cd recorder.
I’m quite proud of the effort/results, the memories are irreplaceable.....and it’s also when I learned the difference between ‘sellin shine’ and ‘drinkin shine’
In other words what was made to sell was not what they drank!....big difference
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