RobH in uk.rec.audio:


I don't think this is quite correct even for the most basic pulses. If
you examine a "digital signal" at a high resolution you will see
"ringing" occur when the voltage changes so the signal isn't either 0v
or 5v but an approximation of a square wave such as

http://mathworld.wolfram.com/Fourier...quareWave.html

The signal becomes "digital" because the resolution of the receiving
equipment is set such that the subtle variation per cycle is not
detectable or is ignored.

True. There is no perfect 'digital wave'. However, for the reciving end,
the voltage isn't sampled at transitions between bits, meaning it should
(in theory) only see the logical extremes and not the ringing.

Either way, beacuse a digital signal shares some analogue properties
doesn't mean it has to be treated with analogue care. At least for the tiny
bandwidth hifi needs.

--
Jim H

Dave Plowman in uk.rec.audio:

In article ,
Jim H wrote:
By my understanding pros use quite ordinary quality XLR cable,
because by design it is almost immune to noise.

There's no such thing as XLR cable - an XLR is the connector. And the
cable used with these is balanced twin screened. It also comes in
several different flavours. ;-)

In the same way as there's no such thing as a phono cable.

I wonder why XLR hasn't filtered down to the mass market? It couldn't
be because they do quite well selling us overdesigned phono cable!

Creating balanced inputs and outputs costs - and introduces extra
electronics since possibly most domestic gear is unbalanced
internally. And XLR connectors are really designed for heavy duty use
- domestic equipment doesn't normally get unplugged each time it's
used.

My point was that as soon as you need to spend £30k on a cable, you should
be using studio-quality technology, which should be ballanced internally.

--
Jim H

"Jim H" wrote in message


True. There is no perfect 'digital wave'. However, for the receiving
end, the voltage isn't sampled at transitions between bits, meaning
it should (in theory) only see the logical extremes and not the
ringing.

But there is a perfect "digital wave" as received by a proper line receiver.

Either way, because a digital signal shares some analogue properties
doesn't mean it has to be treated with analogue care. At least for
the tiny bandwidth hifi needs.

In fact a digitized wave can be transmitted, received, stored and recovered
with zero linear and nonlinear distortion, and as little noise as is desired
by fairly simple means.

Nathan Higgins in uk.rec.audio:

What a waste of money for such little gain.

No gain. Consider that you could travel the world seeking out the best
*live* music for the price of that cable.

--
Jim H

In short, perfect sound forever!


You must work for Phillips :-)

Here ya go darlin's - knock yerselves out on these speaker cables:

Siltech Signature G6 - only £30,000 a pair......

Find 'em on http://www.siltechcables.com/nfhomepa.html


Mmmmmm yea in this months Hi-Fi news :-)

I'm gonna dream tonight of these gorgeous pair of beuties transforming my
Hi-Fi into another dimension!

Yea baby yea...... how's my sweet jar looking :-)

Steve

"Jim H" wrote in message


False. These guys obviously never looked at a SP/DIF signal with a
'scope.

Presumably it would be square if looked at on a scope plotting phase
against time.

Don't bet on it. Typically, it is low-pass filtered which means that it
doesn't do anything sudden.

(IIRC, spdif is phase modulation. could be somithng else, but same idea)

Regardless, it destroys their basic argument.

In article , Stevie Boy wrote:

In short, perfect sound forever!


You must work for Phillips :-)

Member of Pavement, surely? (Now there's a late lamented band.)
--
Andrew Walkingshaw |

My point was that as soon as you need to spend £30k on a cable, you should
be using studio-quality technology, which should be ballanced internally.

Could you elaborate what you mean by"balanced internally"?

In article , Keith G
wrote:
Here ya go darlin's - knock yerselves out on these speaker cables:

Siltech Signature G6 - only £30,000 a pair......

Find 'em on http://www.siltechcables.com/nfhomepa.html

Noise floor of 180 dB - how can they *not* be worth the money?

180 dB with respect to what, exactly, and under what conditions of use?
Measured how, and under what assumptions?

Even given the above has a relevant meaning, I'm not sure why it woud
matter given that I'd suspect most audio sources will have dynamic ranges
of less than 100 dB wideband.

I looked at their site a while ago, and I'm afraid it seemed a lot like
technobabble to me at the time.

Slainte,

Jim

--
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