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1306  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: Best Settings for MQA Sound Quality on: November 20, 2017, 08:46:51 pm
... but the filtering is the key and the NOS1 does not filter anything. So it can all be tuned 100% in software.

Hey Peter, in one of his interviews, Bob Stuart says:

Some people say, ‘I can do a better filter than MQA’, but I say, well actually, you can’t because the encoder and the decoder together make the perfect match… and it’s not the same on every recording. The filter that’s chosen on a 2L recording will be different from one on a jazz recording.

If so, does this mean that no matter which filter we choose in XX, it can never be optimally matched? Or that if it is, it is totally coincidental?

Just trying to understand why I generally like the sound of MQA played back through XX and the NOS1.

Mani.

Hi Mani,

The answer to this is too extensive, I think. For example, I take it that your quote is from quite recently ? If so, there's only one person saying that, as far as I know ... me.
So if we can start from there (and maybe a link ?), then I know what to talk about for starters.

And hey, thank you very much !
Peter
1307  Ultimate Audio Playback / XXHighEnd Support / Re: 2.07 to 2.09 update on: November 20, 2017, 03:10:01 pm
Hi Fralippo,

Quote
- Reboot in normal OS ???

If you mean that you don't know what this means ... It is the normal mode of the OS vs Minimized OS (you can boot back and forth into each).
Anyway, as Arjan said, booting into Normal OS is not necessary.

Reboot to Base is enough.

This counts for people using the RAM OS Disk. But I don't think that is you, Fralippo. Anyway take care that you don't upgrade in a RAM Disk because that would be quite "temporary".

Kind regards,
Peter
1308  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 19, 2017, 04:16:16 am
yes, i have 'don't do anything with coverart' activated, does that mean OSD Text is off? thanks, dave

Dave, it should be, yes.
1309  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 18, 2017, 05:58:50 pm
Dave, Possibly you have activated "Don't do anything with Coverart" (in de Coverart section) ? If that is the case, your screen will be black with nothing shown on it, during Unattended Playback.

Peter
1310  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 18, 2017, 12:01:23 pm
Hi all,

It now slowly becomes clear that some other new dimension (?) is in order : the general dynamics of the track itself. To this you could respond "sure, of course", but don't be so fast ...

It seems to be about the same thing as all being way more separated (each instrument has its own space and does not interfere with the others at all), combined with a "more black" as how I perceive it myself. Try to envision this (and for a few Dutch, use Drukwerk - Je loog tegen mij (no Remasters please) as an example) :

First off, basses are so extreme and in the middle of your face, that once again this can't be but still is so. This was not so at all. But mind you, this is agains the relative silence of the remainder. This is what is occurring throughout. But what's far more startling is this :

The music plays along and at times the drummer seems to jump from his stool and with his whole body as weight behind the sticks, he smashes his drums. He does this at the breaks most of the time (a break is one measure where e.g. all the toms are passed from high to low ending on the floor tom - and this instead of the normal rythm).
The fact that this is (way) louder is sooo true (realistic). But you only realize that this is suddenly there when you (suddenly) hear it.
I have played this album numerous times, and suddenly it is working out like this.

It is nothing about highs which stand out and emphasize (I say it again "what highs ?" so the effect must be real. It includes the pressure of the drums, just as that it shows the force on plucked bass guitar strings.
So the dynamic range of an instrument has increased, and not by little.

Regards,
Peter

1311  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 17, 2017, 07:09:20 pm
Hi Juan,

Quote
I thought I had read something about it but I'm sure I've mistakenly mixed some concepts like galvanic isolation of the USB cable and removing the ground from the NOS1.

Maybe not, but it is a bit different (from my understanding of what you thought) :

With the black wire: connected (Sw#3 down) the Galvanic Isolation in the i2s section is violated "halfly". Notice that I now mention "i2s" because that's where it is and always has been, while today we also have "USB Interface" galvanic isolation by means of the Phisolator. And I don't think I ever even thought of any "black wire" impact regarding this. It should be Up for the best isolation anyway.
In the past the i2s isolation has sure been mentioned by me in relation with the black wire (but thus was just called "Galvanic Isolation").

Does this help a little ?

Best regards,
Peter
1312  Ultimate Audio Playback / XXHighEnd Support / Re: MQA decoding issue on: November 17, 2017, 04:06:33 pm
OK, thank you for bearing with me !

Regards,
Peter
1313  Ultimate Audio Playback / XXHighEnd Support / Re: MQA decoding issue on: November 17, 2017, 01:59:49 pm
Hi again Mani,

Quote
I get the error shown below when preparing streams.

Well, that nicely testifies of what I was saying.

I don't think anything works fine because any "96" album should show 96 for base rate and not 48.
Your decoding just does not work and it *has* to work already on the PC where you Prepare things, or otherwise nothing works.
I don't see you responding to my 2.09 remark, so I take it that you don't use that on the "Tidal" PC. Haha.

Notice that it is best for you (at this moment) would be that you always retry all from the start. So throw out that Robert Plant, Search for it again - and that is sufficient to prove that it works or not, because as said, that 96 icon should appear in the Library Area('s Coverart) already.

Peter

1314  Ultimate Audio Playback / XXHighEnd Support / Re: MQA decoding issue on: November 17, 2017, 01:16:31 pm
Hi Mani,

I'm afraid you have a decoding issue. See below for how it is supposed to look and mind the "96" icon in the bottom right corner. If you see nothing of this anywhere in your Library Area then on that PC the decoding does not work.
Btw, I take it that you use 2.09 for this (the Tidal-approaching PC !) ? because that *is* required ...

Regards,
Peter
1315  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 17, 2017, 01:09:08 pm
Quote
In some post I read that it has to do, as you mention, with the grounding of the USB cable and the dac.

Hi Juan,

I don't think that I said - or am saying that (but with the notice that your sentence is hard to interpret by me, which by coincidence counts for the whole of your post (somehow)).

All I can say for real is "No, I never said that" and thus I can't bring value into your suggestions.

Quote
I observe a variation of the dcoffset from the reference value, 0.77 / 0.55 to 0.98 / 0.79, maybe more. When I unplug the dac, the reference value only lasts a few minutes and then gradually increases until reaching the aforementioned values ​​where it remains stable with small oscillations.

That this change is occurring is known (also see your email (for everybody) about the New DC Offset), but that this is under the influence of "ground loop" or what it is, is/was not known to me. As you will recognize from the email, I say "when cold" and "when warmer is may vary 1mV).

What's interesting with this, is that this can well be "caused" by the galvanic isolation in the USB chain. "Caused" between quotes and merely a "happens since".

Regards,
Peter
1316  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 17, 2017, 06:59:42 am
Quote
Yep, you've gotta power cycle both the nos1a and the pc or the sound eventually degrades.

Or maybe power cycle the PC and unplug and replug the USB cable.

There's so much going on with that USB ... you don't want to know. If you already look at the DC Offset on the NOS1-USB and how this is influenced by the USB cable with the PC Running ... So when DC Offset is in order it can only point at some groundloop going on (but now over the interlinks). So envision what actally happens when that groundloop can be broken by replugging the USB cable.
Btw, normal situation of breaking the groundloop is by detaching the connection to the output (which is the power to the DAC or to the DAC board Sw#2).

Peter
1317  Ultimate Audio Playback / XXHighEnd Support / Re: Burst of noise on: November 17, 2017, 06:51:31 am
Hi all,

This should be the final one (download it below).
Now not only the issue is covered for when it happens (as in the X2 version) but also the cause has been found and taken out. This cause has been in there forever (since the last 0.9z version), but was challenged for because of a 80 second time window where things could go wrong which window previously was way shorter (think a few seconds). All related to how playback stopped (implicitly would incur for the wrong situation) and how fast a new Play was issued.
The noise could happen fairly soon when the new Play was issued, but also at the second track of that when the first was shorter than 80 seconds (minus how fast you could re-issue Play).

Thank you all for your help on this one !

Peter
1318  Ultimate Audio Playback / XXHighEnd Support / Re: Burst of noise on: November 15, 2017, 12:07:59 pm
X2. I will remove the X1 upload. Sorry for the confsion !

Peter
1319  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 15, 2017, 06:00:46 am
I don't know how to explain it, but what happens in half of the tracks is something which never occurred before : something like spell-bounding.
OK, that didn't make sense. Hips - oops

Maybe especially with my "test signals" music (think stuff from Gaudi and 200 others) there can be this "scratching" super saw upsweeping kind of sound. You probably won't what I mean by it becase you'd need to be in the kind of GOA scene (which I am not but this is a successor of House and we all know what that is) ... but think of a scratched LP. No wait, what a DJ does back and forth to make that bzhoop sound, often used in hip-hop. Or at least that is where it emerged, I think. Combine this with "super saw" which is a modern synth technique (sound); Yello in their latest Toy album uses that too in half of the tracks, but (luckily) mildly. Now :

What is totally new in our "SQ" of today is that this leads to Explosion or World's Destrucion or something of that kind. Not sure to what degree it requires my speakers to incur for this, but each time such a thing happens, it is total-shock. It seems to be related to inifite speed (try to find music with super saw synth sound) and how the slower starting on-off sound ends up in a higher frequency on-off and that in half of a second. It comes across as world destruction indeed and this is merely because you don't know where it ends. I just said half of a second, but would this frequency increase - which also carries increase in level - last twice as long, your windows will go out or the ceiling comes down.
This is a bit how I warned for things breaking, which is serious.

So if I now listen for 30 minutes to music, I will have said SH*T! for 30 times outloud - so many times this happens. But again, it is the type of music for a larger part.
Point is : previously not even one time SH*T! happened, so this is all new (and I am really not aware of using new speakers, amplifiers, DACs or USB cables). And again I say : how ever can this be happening.

It also starts to explicitly occur how black the background is. It almost comes across as all totally silent while music just plays (at loud levels). I am sure this contributes to this "world destruction" sense, as all comes as a surprise. And that with music I have played a 100 times if not 1000.

This is about dynamic behavior which explicitly has envelope. Maybe you need to have experience with programming synthesizer sounds, but envelope is how a sound evolves from 0 to maximum level and back to zero (think of one piano key and how it evolves). What now is occurring is that the envelope has many variations under way, and these now can be perceived. Think of this mentioned half of a second developing slowly, has some acceleration underway which also decays (the scratching with super saw sound which latter is on/off in itself) and from half on it accelerates to infinity, luckily suddenly ending or else things would break.
This variation in the envelope was just not there.

Below you see a super simple form of a tone (voice) with a decresing attack (the opposite of what I am talking about) a lowering in level (the decay), a duration of the same level (sustain) and how the sound dies out (release). And that a 500 times in half of a second and this suddenly being discernable.



A bit of background :
https://youtu.be/S0a-OPbCI88

And with this example of super saw, try to envision how a large and fast system (with 2.09 XXHighEnd) can make things dangerously for the energy emitted :
https://youtu.be/Lk47wt-ho5A?t=959

OK, now I'm sacked.
Peter




1320  Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: 2.09 sound quality on: November 15, 2017, 04:38:04 am
Super thanks for that, Nick. I guess I am going to try when this all has settled somewhat.

Cheers,
Peter
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