View Single Post
  #111   Report Post  
Old February 25th 15, 07:56 PM posted to uk.radio.amateur,rec.radio.amateur.equipment
rickman rickman is offline
external usenet poster
 
First recorded activity by RadioBanter: Nov 2012
Posts: 989
Default What is the point of digital voice?

On 2/25/2015 6:02 AM, gareth wrote:
"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.


I see what you guys mean. He doesn't even understand what e^jwt is. He
sees it as no different from e^wt.

--

Rick