--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com
"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759
Reply by Jon Harris●January 12, 20042004-01-12
"Rick Lyons" <r.lyons@REMOVE.ieee.org> wrote in message
news:3ffff8f2.10668500@news.west.earthlink.net...
> On Fri, 09 Jan 2004 21:26:00 -0500, Ray Andraka <ray@andraka.com>
> wrote:
>
> >Oh, yeah I forgot to add that we are expecting #5 next month. They tell
us this one's
> >a boy too.
> >
>
>
> Hey Ray, maybe you could name your new
> son after one of your DSP pals here
> on comp.dsp.
How about "E-Bob"?!? :-)
Reply by Ray Andraka●January 10, 20042004-01-10
Our 4th is a girl, although I think she wishes she was a boy. In a way, I feel sorry for
the poor lads that she dates when the time comes.
Jerry Avins wrote:
> Ray Andraka wrote:
>
> ? Oh, yeah I forgot to add that we are expecting #5 next month. They tell us this one's
> ? a boy too.
>
> ...
>
> ? --Ray Andraka, P.E.
> ? President, the Andraka Consulting Group, Inc.
> ? 401/884-7930 Fax 401/884-7950
> ? email ray@andraka.com
> ? http://www.andraka.com
> ?
> ? "They that give up essential liberty to obtain a little
> ? temporary safety deserve neither liberty nor safety."
> ? -Benjamin Franklin, 1759
>
> Congratulations! You passed us. We stopped at four, when we had a girl.
>
> Jerry
> --
> "I view the progress of science as ... the slow erosion of the
> tendency to dichotomize." Barbara Smuts, U. Mich.
> ?????????????????????????????????????????????????????????????????????
--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com
"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759
Reply by Jerry Avins●January 10, 20042004-01-10
Ray Andraka wrote:
> Oh, yeah I forgot to add that we are expecting #5 next month. They tell us this one's
> a boy too.
...
> --Ray Andraka, P.E.
> President, the Andraka Consulting Group, Inc.
> 401/884-7930 Fax 401/884-7950
> email ray@andraka.com
> http://www.andraka.com
>
> "They that give up essential liberty to obtain a little
> temporary safety deserve neither liberty nor safety."
> -Benjamin Franklin, 1759
Congratulations! You passed us. We stopped at four, when we had a girl.
Jerry
--
"I view the progress of science as ... the slow erosion of the
tendency to dichotomize." Barbara Smuts, U. Mich.
���������������������������������������������������������������������
Reply by Rick Lyons●January 10, 20042004-01-10
On Fri, 09 Jan 2004 21:26:00 -0500, Ray Andraka <ray@andraka.com>
wrote:
>Oh, yeah I forgot to add that we are expecting #5 next month. They tell us this one's
>a boy too.
>
Five children! How 'bout that!
Good for you.
Whew, you're gonna be a busy guy.
Actually, you've already been a "busy" guy. :-) :-)
Hey Ray, maybe you could name your new
son after one of your DSP pals here
on comp.dsp.
Regards & all the best to the wifey and baby,
[-Rick-]
Reply by Ray Andraka●January 9, 20042004-01-09
Oh, yeah I forgot to add that we are expecting #5 next month. They tell us this one's
a boy too.
Rick Lyons wrote:
> On Fri, 09 Jan 2004 15:48:43 -0500, Ray Andraka <ray@andraka.com>
> wrote:
>
> >Yes, all is well. I'm in the middle of a move, so things are a bit hectic at the
> >moment. The new address, effective Monday is
> >Andraka Consulting Group, Inc
> >202 Torrie Lane
> >North Kingstown, RI 02852
> >
> >Phones and emails remain the same.
> >
> >Still haven't got too far on that book though...
> >
>
> Hi Ray,
> ha, good luck on the book. Half way
> through working on the 2nd edition of my book
> I went into the garage and threw a rope up over
> the beams and decided to hang myself.
> But the phone rang and I climbed down off
> the chair. :-)
>
> Writing a technical book is *NOT* for sissies.
>
> [-Rick-]
--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com
"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759
Reply by Rick Lyons●January 9, 20042004-01-09
On Fri, 09 Jan 2004 15:48:43 -0500, Ray Andraka <ray@andraka.com>
wrote:
>Yes, all is well. I'm in the middle of a move, so things are a bit hectic at the
>moment. The new address, effective Monday is
>Andraka Consulting Group, Inc
>202 Torrie Lane
>North Kingstown, RI 02852
>
>Phones and emails remain the same.
>
>Still haven't got too far on that book though...
>
Hi Ray,
ha, good luck on the book. Half way
through working on the 2nd edition of my book
I went into the garage and threw a rope up over
the beams and decided to hang myself.
But the phone rang and I climbed down off
the chair. :-)
Writing a technical book is *NOT* for sissies.
[-Rick-]
Reply by Ray Andraka●January 9, 20042004-01-09
Yes, all is well. I'm in the middle of a move, so things are a bit hectic at the
moment. The new address, effective Monday is
Andraka Consulting Group, Inc
202 Torrie Lane
North Kingstown, RI 02852
Phones and emails remain the same.
Still haven't got too far on that book though...
Rick Lyons wrote:
> On Thu, 08 Jan 2004 14:37:46 -0500, Ray Andraka <ray@andraka.com>
> wrote:
>
> >Sounds about right. THe worst case angular error after each iteration is the
> >rotation angle of that iteration (which happens if the previous iteration landed
> >exactly on your target angle), so the max error angle is atan(2^-i) after
> >iteration i. Iterations start at 0. The last iteration needed to get an error of
> >less than 0.1 degrees is therefore log2(tan(0.1)) rounded away from zero => 10,
> >and counting from 0 you have 11 iterations to complete not counting your angle
> >reduction.
>
> Hi Ray, (hope all is well)
> Am glad to see that I wasn't too far off.
>
> Thanks bud,
> [-Rick-]
--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com
"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759
Reply by Rick Lyons●January 9, 20042004-01-09
On Thu, 08 Jan 2004 14:37:46 -0500, Ray Andraka <ray@andraka.com>
wrote:
>Sounds about right. THe worst case angular error after each iteration is the
>rotation angle of that iteration (which happens if the previous iteration landed
>exactly on your target angle), so the max error angle is atan(2^-i) after
>iteration i. Iterations start at 0. The last iteration needed to get an error of
>less than 0.1 degrees is therefore log2(tan(0.1)) rounded away from zero => 10,
>and counting from 0 you have 11 iterations to complete not counting your angle
>reduction.
Hi Ray, (hope all is well)
Am glad to see that I wasn't too far off.
Thanks bud,
[-Rick-]
Reply by Ray Andraka●January 8, 20042004-01-08
Sounds about right. THe worst case angular error after each iteration is the
rotation angle of that iteration (which happens if the previous iteration landed
exactly on your target angle), so the max error angle is atan(2^-i) after
iteration i. Iterations start at 0. The last iteration needed to get an error of
less than 0.1 degrees is therefore log2(tan(0.1)) rounded away from zero => 10,
and counting from 0 you have 11 iterations to complete not counting your angle
reduction.
Rick Lyons wrote:
> On 4 Jan 2004 20:36:54 -0800, praveenkumar1979@rediffmail.com
> (praveen) wrote:
>
> >Hello,
> >
> >If you write the cordic in C for atan . How much is the usual number of cycle
> >required?????
> >
> >waiting for reply
> >praveen
>
> Hi,
> Some time ago I had what I think is
> the same question. If I understand the
> CORDIC algorithm properly, it seemed to me that
> to achieve no greater than 0.1 degree error
> you had to go through 11 itereations.
>
> I wonder if anyone can tell me if that's
> correct or not.
>
> Thanks,
> [-Rick-]
--
--Ray Andraka, P.E.
President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950
email ray@andraka.com
http://www.andraka.com
"They that give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759