🚀 go-pugleaf

On Thu, 1 Sep 2005 17:25:01 +1000, Phil Allison wrote:

> "Alan Rutlidge"
> "Arny Krueger"
>>
>>>
>>> It takes significant distances for audio electrical signals to 
>>> demonstrate things like reflections and standing waves. For most 
>>> practical purposes, they never happen because by the time the audio goes 
>>> that far in the modern world, its probably already been digitized.
>>>
>>>
>> Digitising an audio signal does not eliminate propagation delay if the 
>> signal is transmitted over a long distance.  To demonstrate this in 
>> combination with the problem of impedance mismatch - make an international 
>> telephone call to a third world country like India.  The echo you hear is 
>> usually 100% attributable to poor impedance mismatch at the other end of 
>> the line.  And guess what?  It's all occurring at audio frequencies (300Hz 
>> to 3400Hz).
> 
> 
>  ** ROTFLMAO   !!!!
> 
> Does this Rutmaniac, fucking idiot actually teach such monumental 
> **BULLSHIT**  to IT industry trainees  ????
> 
> Only the dullest teenagers would fall for such utter shite !!!
> 
> 
> FYI
> 
> Telecommunications data is digital ( not audio) and travels to places like 
> India via optical fibre and geo-stationery satellites  -  not thousands of 
> miles of bloody co-ax !!
> 
> What a complete MORON  !!!!
> 
> 
> 
> ..........  Phil

So Phil. It is digital right up to the phone at the far end, is it? That
phone doesn't have a hybrid transformer, does it? That transformer doesn't
have a limited sidetone spec, does it? The match of phone to line is
perfect is it? There is no signal reflection from that phone, is there?
That reflected power isn't digitised by the codec is it? That digitised
signal isn't audible at the sending end as an echo is it? And the fact that
these signals might use satellites or optical fibre somehow magically makes
all these reflected signals disappear, does it?

Only only planet Phil does the world work this way.

d