View Single Post
  #45   Report Post  
Old February 25th 15, 11:02 AM posted to uk.radio.amateur,rec.radio.amateur.equipment
gareth gareth is offline
external usenet poster
 
First recorded activity by RadioBanter: Sep 2012
Posts: 1,382
Default What is the point of digital voice?

"Brian Reay" wrote in message
...


He is (deliberately) misrepresenting the discussion. The point was made
that the phasor was rotating clockwise, thus the angle decreasing, ie
becoming negative.


Untrue, no mention of the angle, as below ...

-----ooooo-----

From: "Brian Reay"
Newsgroups: alt.engineering.electrical,uk.radio.amateur
Subject: Phase noise
Date: Sat, 13 Dec 2003 10:21:54 -0000
Message-ID:

Equally, it is easy to mis-interpret the maths as Gareth has done in:

cos(wt) = 1/2 * ( e^(jwt) +e^(-jwt) )

The term e^(-jwt) isn't some magical time machine relating to "minus
time", e^(-jwt) is simply another way of writing 1/(e^jwt) which
is a value that decreases as t increasing.

-----ooooo-----



This has been repeatedly explained to him but he continues to churn out
his
bilge.
His maths (or math) isn't up to it, it is too complex for him (pun
intended).
If you look in the archives you will see him referring to 'negative
frequency', not to mention questioning basic DSP theory, the use of the
Dirac Delta, .....


Well, that just looke like a desperate attempt to save face by resorting
to rather silly and infantile abuse, not deserving of a reply.

Best just to ignore him, he is simply trying to start a row.


Do you think, perhaps, that your repeated-ad-nauseam sneers about
DSP mathematics capability over the past week has that characteristic?

Really, Brian, in that respect it is a case both of, "Physician, heal
thyself!"
and also of, "Hoist by your own petard".

Let me give you a bit of advice, which is to concentrate on behaving
as a grown-up in the international forum which is Usenet, because
if you **** into the wind, as you seem intent on doing every day, every
hour even, then you _WILL_ get your own back.