"Jerry Avins" <jya@ieee.org> wrote in message
news:3F0C664D.4A5AFAEE@ieee.org...
<snip>
> You think maybe Dilip holds a copyright? There's a fellow out there
who
> uses my sig, but he puts it in quotes. That's enough attribution to
make
> me content. (Actually, I'm flattered.)
>
> Jerry
> --
> Engineering is the art of making what you want from things you can
get.
>
����������������������������������������������������������������������
�
I've not used your quote as a .sig, but I have quoted it (with
attribution)
as I think it is absolutely spot on.
Regards
Ian
Reply by Jerry Avins●July 12, 20032003-07-12
kbc wrote:
>
> Jerry Avins <jya@ieee.org> wrote in message news:<3F0F0061.C46BE5BC@ieee.org>...
>
> > >
> > > Until sampling theorem came, this was useful only for discrete sources
> > > of info.
> > >
> > Don't bet on it. The ships Columbus sailed in had lines specified by a
> > sparse set of points, interpolated with a limber batten. Shipwrights
> > today do the same. Don't let tunnel vision blind you to the wider world.
> >
> > Jerry
>
> And sure they would have realised that the points should be reasonably
> close together for this to work.
>
> They were applying the sampling theorem.
They used samples, but they weren't "applying the sampling theorem". It
hadn't yet been explicated, and they hadn't the tools to understand it.
They didn't understand even algebra. Nevertheless, they built ships.
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by kbc●July 12, 20032003-07-12
Jerry Avins <jya@ieee.org> wrote in message news:<3F0F0061.C46BE5BC@ieee.org>...
> >
> > Until sampling theorem came, this was useful only for discrete sources
> > of info.
> >
> Don't bet on it. The ships Columbus sailed in had lines specified by a
> sparse set of points, interpolated with a limber batten. Shipwrights
> today do the same. Don't let tunnel vision blind you to the wider world.
>
> Jerry
And sure they would have realised that the points should be reasonably
close together for this to work.
They were applying the sampling theorem.
Reply by Jerry Avins●July 11, 20032003-07-11
kbc wrote:
>
...
>
> There are only 2 defining notions for digital modulation
> 1) the notion of a symbol
> 2) a finite-set of waveforms , each typically of same ( symbol ) duration.
>
> We sent symbol after symbol. Each symbol takes a 'value' from the
> finite-set.
>
> The elements in the set should be as far away from each other by
> some criteria.
>
> (We are now operating in a finite-dimensional vector space. This
> helps.)
>
> Until sampling theorem came, this was useful only for discrete sources
> of info.
>
Don't bet on it. The ships Columbus sailed in had lines specified by a
sparse set of points, interpolated with a limber batten. Shipwrights
today do the same. Don't let tunnel vision blind you to the wider world.
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by Eric Jacobsen●July 11, 20032003-07-11
On Wed, 09 Jul 2003 12:12:52 -0500, "Dilip V. Sarwate"
<sarwate@uiuc.edu> wrote:
>Digital modulation is described in the New Testament (Matthew 5:37)
>which
>specifically recommends binary signaling (instead of M-ary signaling
>with M > 2),
>and coding with a (2, 1, d = 2) block code, presumably for error
>detection. The
>verse in question says (in the King James Version)
>
> "But let your communication be, Yea, yea; Nay, nay: for whatsoever
>is more
> than these cometh of evil."
>
>and is part of the Sermon on the Mount....
The thing I've always liked about this is that it not only specifies
binary communication but also a half-rate repetition code.
That was probably state-of-the-art at the time, though...
Eric Jacobsen
Minister of Algorithms, Intel Corp.
My opinions may not be Intel's opinions.
http://www.ericjacobsen.org
Reply by Jim Thomas●July 11, 20032003-07-11
Jerry Avins wrote:
>
> "Clay S. Turner" wrote:
> >
> > "Jim Thomas" <jthomas@bittware.com> wrote in message
> > > American Sign Language is digital too, but I don't know when it was
> > > developed.
> >
> > Hello Jim,
> > Is this meant to be a bad pun? Fingers are also known as digits.
> >
> Waddya mean? I thought it was a good pun.
Rats! It was supposed to be a BAD pun!
--
Jim Thomas Principal Applications Engineer Bittware, Inc
jthomas@bittware.com http://www.bittware.com (703) 779-7770
Unix IS user friendly. It's just more particular about its friends.
Reply by Ying Xiong●July 11, 20032003-07-11
kbc32@yahoo.com (kbc) wrote in message news:<a382521e.0307102249.19a25f3f@posting.google.com>...
> There are only 2 defining notions for digital modulation
> 1) the notion of a symbol
> 2) a finite-set of waveforms , each typically of same ( symbol ) duration.
>
> We sent symbol after symbol. Each symbol takes a 'value' from the
> finite-set.
>
> The elements in the set should be as far away from each other by
> some criteria.
>
> (We are now operating in a finite-dimensional vector space. This
> helps.)
>
> Until sampling theorem came, this was useful only for discrete sources
> of info.
>
> Dont confuse this with any discrete-time processing that u may do ( but
> that is also being possible due to sampling theorem. )
No, I am not confused. But sometimes I have to try to not confuse my
students and readers. Thanks for your advise, :-) Ying
Reply by Jerry Avins●July 11, 20032003-07-11
"Clay S. Turner" wrote:
>
> "Jim Thomas" <jthomas@bittware.com> wrote in message
> news:3F0EC1FB.27935F43@bittware.com...
> > Jerry Avins wrote:
> > > The first digital
> > > communications systems I know much about were Napoleon's wig-wag
> > > telegraph with left and right standing for one and zero, and Amerindian
> > > smoke signals, which were made by moving a blanket ON and OFF.
> >
> > American Sign Language is digital too, but I don't know when it was
> > developed.
>
> Hello Jim,
> Is this meant to be a bad pun? Fingers are also known as digits.
>
Waddya mean? I thought it was a good pun.
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by Clay S. Turner●July 11, 20032003-07-11
"Jim Thomas" <jthomas@bittware.com> wrote in message
news:3F0EC1FB.27935F43@bittware.com...
> Jerry Avins wrote:
> > The first digital
> > communications systems I know much about were Napoleon's wig-wag
> > telegraph with left and right standing for one and zero, and Amerindian
> > smoke signals, which were made by moving a blanket ON and OFF.
>
> American Sign Language is digital too, but I don't know when it was
> developed.
Hello Jim,
Is this meant to be a bad pun? Fingers are also known as digits.
Clay
>
> ;-)
>
> --
> Jim Thomas Principal Applications Engineer Bittware, Inc
> jthomas@bittware.com http://www.bittware.com (703) 779-7770
> Unix IS user friendly. It's just more particular about its friends.
Reply by Jim Thomas●July 11, 20032003-07-11
Jerry Avins wrote:
> The first digital
> communications systems I know much about were Napoleon's wig-wag
> telegraph with left and right standing for one and zero, and Amerindian
> smoke signals, which were made by moving a blanket ON and OFF.
American Sign Language is digital too, but I don't know when it was
developed.
;-)
--
Jim Thomas Principal Applications Engineer Bittware, Inc
jthomas@bittware.com http://www.bittware.com (703) 779-7770
Unix IS user friendly. It's just more particular about its friends.