RE: MEASUREMENTS: Ethernet Cables and Audio...

Computer Audio Asylum

Music servers and other computer based digital audio technologies.

Posted by Tony Lauck (A) on February 15, 2015 at 14:04:04

In Reply to: MEASUREMENTS: Ethernet Cables and Audio... posted by Archimago on February 14, 2015 at 23:38:35:

There aren't going to be an data errors if the equipment and cables are within spec. (Likely with the equipment, likely with normal Ethernet cables, but who knows with "Audiophile" Ethernet cables that were "tuned" for "sound quality" or whatever their marketing department claims their engineering department was doing, if there actually was an engineering department.)

Given there aren't any errors, but if there were there would be less than one chance in 4 billion that they would pass the 32 bit CRC. (I was the guy who picked that CRC, also was in the meeting when we sized the address fields.) If there were errors (loose connection) most operating systems count them and there will be software to monitor them. The Ethernet provides galvanic isolation through the use of pulse transformers at each end. If shielded cable is used there may be ground loops introduced. I have heard suggestions that the shield should only be attached at one end, presumably for this reason.

I would investigate that 60 Hz hum that is getting into your measurements and/or system. It seems high to me, and looks to have a lot of ugly harmonics. Surely this is degrading the sound of what you hear when you listen to music. Hum from my cassette deck via unbalanced RCA cable to my ADC is at least -10 dB lower and there are no harmonics.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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Follow Ups Full Thread

Topic - $ 10 K Ethernet Cable Claims Audio Fidelity! - bquisp 12:58:40 02/10/15 (13)

MEASUREMENTS: Ethernet Cables and Audio... - Archimago 23:38:35 02/14/15 (1)

RE: MEASUREMENTS: Ethernet Cables and Audio... - Tony Lauck 02/15/1514:04:04 02/15/15 (0)

LMAO - BPoletti 19:51:50 02/14/15 (0)

This is a total exaggeration... - PAR 00:06:45 02/11/15 (4)

RE: This is a total exaggeration... - Tony Lauck 08:57:48 02/11/15 (3)

WOW! That's only $3 a metre... - PAR 09:49:14 02/11/15 (2)

RE: WOW! That's only $3 a metre... - Tony Lauck 11:16:50 02/11/15 (1)

:-) nt - PAR 14:36:07 02/11/15 (0)

RE: $ 10 K Ethernet Cable Claims Audio Fidelity! - stehno 23:43:33 02/10/15 (0)

RE: $ 10 K Ethernet Cable Claims Audio Fidelity! - Sprezza Tura 18:24:40 02/10/15 (0)

RE: $ 10 K Ethernet Cable Claims Audio Fidelity! - stehno 17:58:50 02/10/15 (0)

RE: $ 10 K Ethernet Cable Claims Audio Fidelity! - stereo5 16:41:26 02/10/15 (0)

RE: $ 10 K Ethernet Cable Claims Audio Fidelity! - Roseval 15:20:06 02/10/15 (0)

Follow Ups

RE: MEASUREMENTS: Ethernet Cables and Audio... - Tony Lauck 02/15/1514:04:04 02/15/15 (0)

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