In (rec.radio.amateur.homebrew), Ben Bradley wrote:
In rec.radio.amateur.homebrew,sci.electronics.design, Bob Stephens
wrote:

On Fri, 12 Mar 2004 16:08:15 +0000, John Woodgate wrote:

where sinc(x)= {sin(x)}/x

I've never seen this terminology before. Is this standard math parlance or
is it something of your own?

You can google for it (Usenet or Web) and find it, I've seen it
used a good bit in signal processing and such.

And it shows up in some math classes as well, though its main use is
in electronics. I suspect it showed up because the instructor wanted
to show a real-life example, which just happened to be -- electronics.

--
End-to-end connectivity is the "coin of the realm" for internet
operations. Use it wisely. You only control your end of it.

On Fri, 12 Mar 2004 17:25:59 +0000 (UTC), Mike Andrews wrote:

In (rec.radio.amateur.homebrew), Ben Bradley wrote:
In rec.radio.amateur.homebrew,sci.electronics.design, Bob Stephens
wrote:

On Fri, 12 Mar 2004 16:08:15 +0000, John Woodgate wrote:

where sinc(x)= {sin(x)}/x

I've never seen this terminology before. Is this standard math parlance or
is it something of your own?

You can google for it (Usenet or Web) and find it, I've seen it
used a good bit in signal processing and such.

And it shows up in some math classes as well, though its main use is
in electronics. I suspect it showed up because the instructor wanted
to show a real-life example, which just happened to be -- electronics.

I've always seen it as 1/x sin(x) "one over ex sine ex". the hyperbolic
sine function sinh is usually pronounced "Cinch"
So how do you pronounce sinc? "Sink ?"

"Bob Stephens" wrote in message
.. .
On Fri, 12 Mar 2004 17:25:59 +0000 (UTC), Mike Andrews wrote:

In
(rec.radio.amateur.homebrew), Ben Bradley wrote:
In rec.radio.amateur.homebrew,sci.electronics.design, Bob Stephens
wrote:

On Fri, 12 Mar 2004 16:08:15 +0000, John Woodgate wrote:

where sinc(x)= {sin(x)}/x

I've never seen this terminology before. Is this standard math parlance
or
is it something of your own?

You can google for it (Usenet or Web) and find it, I've seen it
used a good bit in signal processing and such.

And it shows up in some math classes as well, though its main use is
in electronics. I suspect it showed up because the instructor wanted
to show a real-life example, which just happened to be -- electronics.

I've always seen it as 1/x sin(x) "one over ex sine ex". the hyperbolic
sine function sinh is usually pronounced "Cinch"
So how do you pronounce sinc? "Sink ?"

Yes, it's pronounced "sink", and it's quite common in signal processing.
You define it as being the _limit_ of sin(x)/x as x - 0 because otherwise
it's undefined at zero, and all the mathematicians in the crowd will curse
at you for being yet another engineer who's treating math so casually.

In (rec.radio.amateur.homebrew), Tim Wescott wrote:

Yes, it's pronounced "sink", and it's quite common in signal processing.
You define it as being the _limit_ of sin(x)/x as x - 0 because otherwise
it's undefined at zero, and all the mathematicians in the crowd will curse
at you for being yet another engineer who's treating math so casually.

That's not precisely true.

Some fraction of us mathematicians wander away, shaking our heads and
muttering "Engineers!" under our breaths.

--
The official state religion of France is Bureaucracy. They've replaced
the Trinity with the Triplicate.
-- David Richerby, in a place not to be named.

Mike Andrews wrote:

In (rec.radio.amateur.homebrew), Tim
Wescott wrote:

Yes, it's pronounced "sink", and it's quite common in signal processing.
You define it as being the _limit_ of sin(x)/x as x - 0 because
otherwise it's undefined at zero, and all the mathematicians in the crowd
will curse at you for being yet another engineer who's treating math so
casually.

That's not precisely true.

Some fraction of us mathematicians wander away, shaking our heads and
muttering "Engineers!" under our breaths.


Reminds me of the old joke about the mathemetician, the physicist and the
engineer. They were each shown into a room in the centre of which was £50
note / $100 bill (depending on which side of the pond you live).

They were told they could walk half the distance to the money and stop.
Then they could walk half the remaining ditance and so on until they got
the money.

The mathemetician worked out you would never reach the money so he didn't
even try. The physicist, working to five decimal places was still there a
week later. The engineer did three iterations, said 'That's close enough'
and picked up the money.

The moral is of course, horses for courses.

Ian

On Fri, 12 Mar 2004 20:41:49 +0000, Ian Bell wrote:




Reminds me of the old joke about the mathemetician, the physicist and the
engineer. They were each shown into a room in the centre of which was £50
note / $100 bill (depending on which side of the pond you live).

They were told they could walk half the distance to the money and stop.
Then they could walk half the remaining ditance and so on until they got
the money.

The mathemetician worked out you would never reach the money so he didn't
even try. The physicist, working to five decimal places was still there a
week later. The engineer did three iterations, said 'That's close enough'
and picked up the money.

The moral is of course, horses for courses.

Ian

.......and I always believed John was an engineer, have some similar
expressions which an instructor used the xmas holidays to derive

JM
----
Jan-Martin, LA8AK, N-4623 Kristiansand
http://home.online.no/~la8ak/

On Fri, 12 Mar 2004 20:41:49 +0000, Ian Bell wrote:




Reminds me of the old joke about the mathemetician, the physicist and the
engineer. They were each shown into a room in the centre of which was £50
note / $100 bill (depending on which side of the pond you live).

They were told they could walk half the distance to the money and stop.
Then they could walk half the remaining ditance and so on until they got
the money.

The mathemetician worked out you would never reach the money so he didn't
even try. The physicist, working to five decimal places was still there a
week later. The engineer did three iterations, said 'That's close enough'
and picked up the money.

The moral is of course, horses for courses.

Ian

.......and I always believed John was an engineer, have some similar
expressions which an instructor used the xmas holidays to derive

JM
----
Jan-Martin, LA8AK, N-4623 Kristiansand
http://home.online.no/~la8ak/

Mike Andrews wrote:

In (rec.radio.amateur.homebrew), Tim
Wescott wrote:

Yes, it's pronounced "sink", and it's quite common in signal processing.
You define it as being the _limit_ of sin(x)/x as x - 0 because
otherwise it's undefined at zero, and all the mathematicians in the crowd
will curse at you for being yet another engineer who's treating math so
casually.

That's not precisely true.

Some fraction of us mathematicians wander away, shaking our heads and
muttering "Engineers!" under our breaths.


Reminds me of the old joke about the mathemetician, the physicist and the
engineer. They were each shown into a room in the centre of which was £50
note / $100 bill (depending on which side of the pond you live).

They were told they could walk half the distance to the money and stop.
Then they could walk half the remaining ditance and so on until they got
the money.

The mathemetician worked out you would never reach the money so he didn't
even try. The physicist, working to five decimal places was still there a
week later. The engineer did three iterations, said 'That's close enough'
and picked up the money.

The moral is of course, horses for courses.

Ian

The Hyperbolic Cosine is pronounced Cosh.
The Hyperbolic Sine is pronounced Shine.
The Hyperbolic Tangent is pronounced Than with a soft Th.

At least that's the way I've been doing it for the last 55 years.

They don't seem to come up very often in conversation although they are just
as fundamental in mathematics as are the trigonometrical functions. They
crop up all over the place especially in transmission lines where they
appear in complex form such as Tanh(A+jB).

"Reg Edwards" wrote in message
...
The Hyperbolic Cosine is pronounced Cosh.
The Hyperbolic Sine is pronounced Shine.
The Hyperbolic Tangent is pronounced Than with a soft Th.

At least that's the way I've been doing it for the last 55 years.

Have you ever noticed no one sits next to you at meetings?


They don't seem to come up very often in conversation although they are
just
as fundamental in mathematics as are the trigonometrical functions. They
crop up all over the place especially in transmission lines where they
appear in complex form such as Tanh(A+jB).