DEMO: What a poor USB cable sounds like...

[Archimago]

Found a really crappy piece of USB cable from the turn of the century
:-)

A demonstration of what a poor USB cable sounds like to demonstrate the
effects of digital errors with an asynchronous USB DAC like the ASUS
Essence One. Also a look at the jitter test...

http://archimago.blogspot.ca/2014/01/demo-measurements-what-does-bad-usb-or.html



Archimago's Musings: (archimago.blogspot.com) A 'more objective'
audiophile blog.
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[Mnyb]

Good demo of data dropouts I can even hear this on my iPad speakers :)

Bad digital cabling can be more sensitive to external sources of
electrical disturbance too. I've had cases of some coax cables
introducing clicks and pops when flicking ligth switches and others
don't .

I do agree with you on the fail in attributing " analog " type of
phenomen to a digital transmission .
For example changing soundstage would require a phase change or mixing
of L & R channels .
Or having more bass ? That would equate eq :confused:

I appreciate your measurement series very much thank you .

A good thing to demonstrate in the future the inherit randomness of it,
folks unaccustomed to measure anything may nitpick your measurements and
looking for small details and try to see something in it ?
(I sometimes measure other stuff in my profession and curves are not
static) .

What I know is that these curves are alive, the noise moves :) a video
would show that .

And if you measure the same thing several times you may get curves that
looks slightly different in the fine details but s/n dB and distortion
and all other data may be the same .
The overall data holds but the squiggly details are truly random noise .
And one set of random noise is equvavilent to another set of random
noise .

I'll bet that a random sample of the "same thing" can look more
different than " the other thing " you compare with, if you get what I
try to say :D

I'll bet that there are some people trying to look at every squiggly
part of your curves and try to interpret them ?



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[ralphpnj]

Thank you Archimago for another excellent set of test results. However I
am afraid that you are beating a very dead horse when it comes to high
end audio and digital cables. As long as the high end audio magazines
depend on advertising money to stay in business then high priced digital
cables will ALWAYS be deemed absolutely essential for any and all high
end audio systems.

What I am currently enjoying is the new craze for DSD high resolution
audio. What the clowns (you know my pet name for the editors and writers
in the high end audio magazines) are failing to tell their readers is
just how dead of format DSD actually is. Sony pulled the plug on DSD
because many recording studios refused to buy the equipment needed to
record in DSD especially so soon after they had retrofitted from analog
to PCM digital. So what exists of DSD is either converted analog
recordings or the very small handful of native DSD recordings made
before the format failed. As far as the converted analog recordings are
concerned I've yet to see or hear any proof that high resolution DSD
sounds better than high resolution PCM, i.e. 24bit/96kHz. But by feeding
into the DSD craze the high end audio industry is generating yet another
revenue stream, very similar to what was accomplished with the
asynchronous USB craze.



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[probedb]

What you really need to test are Chord's £1600/m ethernet cables ;)



'last.fm' (http://www.last.fm/user/probedb)
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