🚀 go-pugleaf

"Don Pearce" <donald@pearce.uk.com> wrote in message 
news:1jlu9dz4m6nho$.9bip6dnzgr15$.dlg@40tude.net...
> 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

Don,

Fair go mate.(wink)  You don't honestly thinks a toaster repairman needs to 
know much about impedance mismatch do you?  :P

Oh, and it looks as if I've been elevated from wire tugging status to 
Information Technologist virtually overnight.  :)  Phil could never get his 
lies straight - err no pun intended..:)  You know, one of these days he's 
actually gonna get something right about me.  When that happens I'll duck 
out and by a lottery ticket.

Cheers,
Alan