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In Reply to: RE: You are missing my point posted by Jaundiced Ear on July 17, 2015 at 02:31:55
Ethernet is a transformer isolated signal . . .
The transformers are there for safety reasons. They are not designed for - and are ineffective at - filtering noise. The humblest LAN installer (me, even) understands the reasons why but Tony Lauck has explained them on this forum a dozen times for those who don't.
And where this RF noise enters the equipment ?
Er, where the wire plugs in?
the entire point of digital: to provide a system that preserves a high quality signal in the face of unavoidable analog distortions.
The error-correction capabilities do indeed ensure that the content of a packet is not corrupted but correcting data errors does not filter associated noise and the computing activity needed to perform error correction typically adds to it. That noise won't induce errors in a spreadsheet but, as you know, tends to degrade the integrity of a real-time signal such as audio. This is basic stuff.
Sorry to sound like a Galileo wannabee but the best way to see if a "better" ethernet connection can improve the sound quality of your system is to try one. Whatever next?
Disconnect the LAN cable from the device that drives your DAC. Connect it to a decentish switching hub such as a small Netgear. Now connect the hub to the device driving your DAC with a variety of short cables. Try to compare a stock cable (with its notoriously out-of-spec impedances, poor connectors etc etc) with a good quality off-the-shelf cable such as a Rosewill and the likes of a Meicord, aimed at the audio sector but only slightly more expensive than the Rosewill. If you have a suitable linear PSU handy, try it on the hub.
If you can't hear the difference, save your money but don't think that doing so logically entitles you to belittle those who say they can. I've not tried a Rosewill but I have compared remote server connections via a Netgear switch (linear and wall-wart powered) using a Meicord, a decent CAT 7 and a stock cable. The Meicord via the linear-powered switch is clearly the best though the CAT 7 wasn't bad. Stock cables, esp when by-passing the switch, significantly degrade the sound. A network engineer has suggested I try using 100-BaseT instead of 1000-BaseT but I've yet to do so.
The only difference Meicord claims for their cables is an adherence to spec closer than practicable with cheaper cables. I do not, given their price, envisage trying Audioquest cables. Thanks BTW to sounchekk for the original tip.
Follow Ups:
"If you can't hear the difference, save your money but don't think that doing so logically entitles you to belittle those who say they can."
My point is that when playing Blu-Ray I see spectacular images on my monitor, while also hearing great audio from my very much generic Blu-Ray player.
I consider this to be a huge improvement over what I saw and heard from VHS some twenty years ago. I think the improvement in video and it's accompanying audio since then has been remarkable.
Now if DVD and Blu-Ray have so much better audio than before, why doesn't regular audio also have a comparable improvement?
Throw rocks at me all you want to, but can you at least answer my question?
If your amps and speakers can't stand the heat, tell them to get out of the kitchen. Just don't let them blame the cook for their inability to deliver a decent meal to the customers.
JE
My point is that when playing Blu-Ray I see spectacular images on my monitor
I'm sure you do but I was discussing a different issue, one prompted by beppe's post. I described (helpfully, I flatter myself) a brief experiment comparing different LAN configurations and suggested that others might want to try the same. If you don't, that's fine. Others might, just as I took up SC's suggestion some years back.
Throw rocks at me all you want to, but can you at least answer my question?
Silly abuse aside, which question? The post of yours I responded to asked three, none of them IMO much amenable to a serious answer. The article you linked to in the OP was so full of non-sequiturs, straw-man arguments and the like already much aired over many years that no-one in their right mind would attempt a reply. Me neither.
As for the VHS v Blu-Ray thing, the VHS (analogue) format was developed in the 1970s, the RBCD (digital) format a few years later. Since then, video has gone digital via DVD and Blu-Ray. Bar a niche "Hi-Res" market, the audio sector is still using RBCD (except when compressed). IOW, your analogy is inappropriate.
If your amps and speakers can't stand the heat, tell them to get out of the kitchen. Just don't let them blame the cook for their inability to deliver a decent meal to the customers.
Sorry but I don't know what you're talking about.
After poking around your site a bunch, i was grateful for how comprehensive, & clear, & useful all the information there is. FWIW, just wanted to say Thanks for all your work, there and here.
Cheers,
"Asylums with doors open wide,
Where people had paid to see inside,
For entertainment they watch his body twist
Behind his eyes he says, 'I still exist.'"
i was grateful for how comprehensive, & clear, & useful all the information there is.
Aw, shucks, you sure know the way to a girl's heart. The only snag is that I don't have a site. To make sure the right person gets the thanks, what site are you referring to?
D
Thought that you were involved with the "well tempered computer"
:-)
If not, - Thank you anyway for your great posts!!
"Asylums with doors open wide,
Where people had paid to see inside,
For entertainment they watch his body twist
Behind his eyes he says, 'I still exist.'"
Thought that you were involved with the "well tempered computer" . . .
Not sure that Roseval would thank you for that : <( but I agree it's a most useful resource.
"Not sure that Roseval would thank you for that : <( but I agree it's a most useful resource."
A least he got the first letter right.
Is this like old Joke... Iceberg, Goldberg it's all the same.
.
"Asylums with doors open wide,
Where people had paid to see inside,
For entertainment they watch his body twist
Behind his eyes he says, 'I still exist.'"
Maybe thinking about streamers so much has affected your stream of consciousnesses...
Regular audio has improved. If you are happy with your equipment, what more needs to be said?
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