$40 optical converters do not reduce it, but completely eliminate it.
If you can reduce it to -120 dB for cheaper than that, I will be happy to know how.
I wasn’t referring to your linguistic capability, I was referring to your technical knowledge and understanding.
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No, they don’t as I already explained. Their internal switching power supplies generate additional noise on the copper ethernet side when you go back from fibre to copper.
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Really?
What was wrong with my arguments?
How can you reduce the SINGAD of your whole LAN more efficiently, and more cost-effectively, than with optical conversion?
It’s SINAD.
This is about the SINAD of the analog audio at the DAC output, not Ethernet signal. The latter has enough SINAD already when working properly.
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Excuse me, my friend, but instead of answering to a simple question, you keep pretending that I don’t understand. Why don’t you give me a better solution to reduce the noise-floor, so I can apply it?
This is a good DDC that comes before the DAC.
It has a built-in optical isolation to eliminate the noise of the devices that preceded it in the LAN:
This is a streamer with a built-in optical isolation to eliminate all the noise of the devices that precede it in the LAN:
And these are Ethernet optical converters that will elimiante all the noise of the devices that precede them in the LAN, if they are placed before the streamer:
That’s just stuff you can buy. The fact that you can buy it is not evidence for any of it making anything better.
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I explained in an earlier post why and how optical isolation makes things better.
I’m waiting for an alternative solution to eliminate the electrical noise that is caused by EMI and RFI in the LAN.
Unconvincingly, though
I am waiting for evidence that it is necessary or makes a difference
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What was unconvincing?
Tell me, and I’ll try to elaborate.
The whole theory.
In your initial comment in this thread you stated the following:
I asked you for some evidence, and you said you didn’t have any other than your own experience. Why should anyone take these arguments seriously when there isn’t a shred of objective, scientific or rational evidence to back up these claims?
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Because you don’t need one. If you have a competent DAC, it will easily achieve a sufficient SINAD to not be bothered by the noise you keep talking about trying to eliminate.
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Everything. Sorry, please don’t bother
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The electrical noise spreads everywhere in the LAN.
Do you think, for instance, that the server does not spread electrical noise when it streams?
You misunderstood my request. I’m not asking for evidence that noise exists, I’m asking for a rational/objective explanation as to how this ‘LAN’ noise can degrade the quality of the sound that comes out of your speakers.
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Where’s your evidence to substantiate this claim? Measurements, data? Provide proof to substantiate your statement, otherwise you’re just trolling.
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Your DAC maybe extremely silent, but there’s no way for it to eliminate the electrical noise from the DATA that enters to it, because both are present in the same electrical current that enters to the DAC.
The only way to do it is by an optical conversion of the DATA. During the conversion, the DATA that is present in the electrical current is converted to light, while the electrical noise is not converted, and remains behind, because it does not contain DATA.
There’s no other technological solution for this issue.
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Man i am regretting my post of just wanting to share my situation. Endless pointless discussions of a thousand different thoughts. I shared my situation, a choice of a setup that works good for me as part of a real life experience and not just theories. Please use my information as you want and continue to discuss amongst yourselves.
Your pictures show that you are back to square 1, because you eventually use a copper ethernet cable to your streamer.
I am very certain that you won’t hear any difference.
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It’s like asking for a proof that the Earth is not flat.
RFI and EMI create electrical noise in any system.
EMI
RFI
https://service.shure.com/s/article/how-does-radio-frequency-interference-rfi-occur?language=en_US
And electrical noise is present in any kind of LAN.
This article is about the electrical noise in an audio network and the ways to improve the sound quality.
And among the tips that are given, there’s the following one:
“Convert the electrical signal to optical and then back again before the Hifi”
FULL ARTICLE: