Can System Noise be saved to HDDs, SDs, etc. in digital audio files?

[mansr]

2 minutes ago, PeterSt said:

Here too, the phenomenon is easily explainable.

So explain it.

[mansr]

15 minutes ago, alfe said:

DCD

Could you be a little less cryptic, just this one time.

[mansr]

17 minutes ago, alfe said:

You are making fun of Alex and you are quoting as a reference somebody who says that pit structure have no influence on the sound, mamamia😂

He's quoting one of Alex's idols disagreeing with Alex.

[mansr]

5 minutes ago, alfe said:

Duty cycle distortion.

Of what signal, and to what effect?

[mansr]

6 minutes ago, jabbr said:

Electrical noise most certainly DOES get stored at a low level in a digital file.

Depends on the storage medium. For example, a punch card either has a hole in a given position or it doesn't. A worn punch machine might produce poorly shaped holes, but that won't be influenced by power supply noise.

[mansr]

13 minutes ago, alfe said:

Peter can explain, he is using that ad nauseam.😶

Even if he can, he doesn't.

[mansr]

14 minutes ago, jabbr said:

There is a nice diagram in here: https://www.ieee.li/pdf/viewgraphs/jitter_basics_advanced.pdf

 

We’ve discussed modifying the rise time to modulate/reduce ringing etc.

How does any of that relate to Peter's software?

[mansr]

26 minutes ago, jabbr said:

The system is working as described. 

 

For example in a PLL or any error feedback system, the further away a signal is from the center, the larger the error signal: is that a voltage or current? Power draw? Consider a situation in which the error correction circuitry requires current draw.

Could you be any more vague?

[mansr]

2 minutes ago, asdf1000 said:

So many cryptic replies.

Not even that. They're just throwing out random terms related to digital signal quality. Saying "jitter" or "rise time" means nothing without mentioning which signals they refer to and what the expected/supposed effects are.

[mansr]

5 minutes ago, jabbr said:

Certainly!

 

https://www.scientificamerican.com/article/magnetic-hard-drives-go-atomic/

https://patentimages.storage.googleapis.com/85/c1/8a/7b356cac8c4339/US6788484.pdf

https://patents.google.com/patent/US5633766

No, that's the same level of vagueness.

[mansr]

1 minute ago, jabbr said:

The simple answer is that when looking at how bird are stored on storage media at a low level there an optical or magnetic state. The readout electronics take these on platter states and convert to a digital signal. This process requires power and in many situations, the power required to convert the state to an electrical bit varies depending on the degree to which the state deviated from ideal. 

Does it, though, to any relevant extent? Supposing it does, how would these fluctuations propagate across multiple copies and network transfers? It's preposterous, and I'm surprised to see you of all people arguing otherwise.

[mansr]

7 minutes ago, jabbr said:

In any case @alfe is actually one of the world’s experts on this exact topic and I am hesitant to go beyond my vague understanding.

Is he? All we know is that he allegedly works for some unnamed company that designs optical drives. We don't know his name, so we can't look up anything he might have published, and his posts are utterly devoid of any useful information, let alone anything by which his expertise might be judged.

[mansr]

1 minute ago, jabbr said:

I am explicitly NOT arguing otherwise. Read my posts. I have been very clear that these fluctuations DO NOT survive copy nor network transmission. Stop accusing me of being vague when you haven’t bothered to read my posts.

Maybe if you weren't so vague, you wouldn't be misunderstood.

[mansr]

7 minutes ago, jabbr said:

Explain yourself. PLL synchronization works by error feedback (of course the errors are not but errors)

Your point being? A PLL consists of a phase comparator, a low-pass filter, and a VCO. The operation is continuous, not something that only kicks in when the error crosses some threshold.

[mansr]

8 minutes ago, John Dyson said:

Look at the 1st old color TV designs -- they make me cringe, but they worked (sort of.)

Never Twice Same Colour

[mansr]

4 minutes ago, sandyk said:

The original series of 6 DBTs that were performed were done to the required standards.

Do you have a detailed description of the setup and a video recording if the test session?

[mansr]

1 minute ago, sandyk said:

That's typical from you !!!

 

I DO KNOW HIS NAME, AND I HAVE SEEN REFERENCES TO SOME OF HIS PATENTS IN THIS AREA. 

Means nothing to me.

[mansr]

2 minutes ago, sandyk said:

Even if there were you would still refuse to accept the results.

It's quite possible I still wouldn't be convinced, but without those I have no reason to even consider the possibility.

[mansr]

2 minutes ago, sandyk said:

Just as the name Mansr means nothing to the vast majority of members of this forum

So what? I'm not claiming to be a top authority on anything.

[mansr]

[mansr]

4 minutes ago, kumakuma said:

I thought you were allergic to Latin! 👺

That's why he had to misspell it.

[mansr]

13 minutes ago, sandyk said:

 Neither is al.fe

 Others , including myself , who know his credentials are doing this, NOT him !!!

Why should I trust you to pick authorities?

[mansr]

12 minutes ago, sandyk said:

Unlike some, I don't keep referring people to textbooks by Henry Ott etc.

Henry Ott's books are not trusted because of who wrote them but because his methods have been shown to work.

[mansr]

8 minutes ago, jabbr said:

That’s single blinded.

Their faith is double-blind.

[mansr]

12 minutes ago, sandyk said:

make me look like a liar

Fool, not liar, and you're doing a grand job of it all by yourself.