All-pole lattice filter

"Randy Yates" <randy.yates@sonyericsson.com> wrote in message 
news:xxpk6ml32zd.fsf@usrts005.corpusers.net...
> "Jon Harris" <jon99_harris7@hotmail.com> writes:
>
>> "Randy Yates" <randy.yates@sonyericsson.com> wrote in message
>> news:xxpsm193den.fsf@usrts005.corpusers.net...
>> >
>> > We studied 2nd-order IIR lattice filters in my DSP class at NCSU. You
>> > can access my homework for that assignment here:
>> >
>> > http://www.uspsdata.org/hw6.zip
>>
>> Just curious, did everyone in your class produce beautifully typeset 
>> equations
>> and nicely laid text/graphics, or were you an overachiever?  (This is 
>> intended
>> as a compliment!)
>
> No, yes, and thanks!
>
>> When I was in school, my homework was mostly pencil and
>> paper, rough drawings, etc. with a few graphs printed out (dot-matrix) if I 
>> was
>> going all out!
>
> It's amazing how quickly and nicely one can do these types of papers when you
> a) have a good tool (TeX/LaTeX) and b) have had the opportunity to 
> consistently
> use the tool for a long time. I am "standing on the shoulders of giants" in 
> that
> many people in the TeX community have made lots of very powerful features 
> available
> for free.

If I had some nice tools for that kind of stuff, I could see myself 
overachieving similarly!  My only experience with equations is the MS Word 
equation editor, which seems makes entering equations quite slow and painful. 

"Jon Harris" <jon99_harris7@hotmail.com> wrote in message 
news:1178qcs6mkrfp11@corp.supernews.com...
> "Randy Yates" <randy.yates@sonyericsson.com> wrote in message 
> news:xxpk6ml32zd.fsf@usrts005.corpusers.net...
>> "Jon Harris" <jon99_harris7@hotmail.com> writes:
>>
>>> "Randy Yates" <randy.yates@sonyericsson.com> wrote in message
>>> news:xxpsm193den.fsf@usrts005.corpusers.net...
>>> >
>>> > We studied 2nd-order IIR lattice filters in my DSP class at NCSU. You
>>> > can access my homework for that assignment here:
>>> >
>>> > http://www.uspsdata.org/hw6.zip
>>>
>>> Just curious, did everyone in your class produce beautifully typeset 
>>> equations
>>> and nicely laid text/graphics, or were you an overachiever?  (This is 
>>> intended
>>> as a compliment!)
>>
>> No, yes, and thanks!
>>
>>> When I was in school, my homework was mostly pencil and
>>> paper, rough drawings, etc. with a few graphs printed out (dot-matrix) 
>>> if I was
>>> going all out!
>>
>> It's amazing how quickly and nicely one can do these types of papers when 
>> you
>> a) have a good tool (TeX/LaTeX) and b) have had the opportunity to 
>> consistently
>> use the tool for a long time. I am "standing on the shoulders of giants" 
>> in that
>> many people in the TeX community have made lots of very powerful features 
>> available
>> for free.
>
> If I had some nice tools for that kind of stuff, I could see myself 
> overachieving similarly!  My only experience with equations is the MS Word 
> equation editor, which seems makes entering equations quite slow and 
> painful.

Save lotsa snippets!  Same thing for Email Effects.

Fred 

Jon Harris wrote:
> "Randy Yates" <randy.yates@sonyericsson.com> wrote in message
> news:xxpsm193den.fsf@usrts005.corpusers.net...
> >
> > We studied 2nd-order IIR lattice filters in my DSP class at NCSU.
You
> > can access my homework for that assignment here:
> >
> > http://www.uspsdata.org/hw6.zip

Nice job, Randy. Once you have all the tools available (LaTeX, Matlab,
what did you use for the block diagrams?), these things are just a
breeze to make. At one point, LaTeX was my "brain prothesis". I read up

on some complicated maths and had to digest it, which meant
re-formulating
the material and writing it down somewhere. I routinely wrote my own
notes using LaTeX. I would never have contemplated using anything else.


> Just curious, did everyone in your class produce beautifully typeset
equations
> and nicely laid text/graphics, or were you an overachiever?  (This is
intended
> as a compliment!)

Not to undermine Randy and his excellent job, but these are routine
results when using LaTeX. The text processing system does all the
"boring" work for you, keeps track of equation numbers, references,
section headings, table of contents, list of figures, key word index,
bibliography, etc. It's a steep learning curve (I don't know if
anyone uses LaTeX outside universities and publishing houses) but the
savings in time and drudgery are immense, when writing technical stuff.

> When I was in school, my homework was mostly pencil and
> paper, rough drawings, etc. with a few graphs printed out
(dot-matrix) if I was
> going all out!

Same thing here. Add to that that my hand-writing is so bad I have to
re-type any text on a computer within two minutes, while I can still
remember what I wrote, or I can't read it...

When I was some 15-16 years old, my mother got an obsolete electrical
typewriter from her office. I thought this would be a nice tool to
make slightly better homework and course summaries than my hand-written

stuff (access to computers were still a few years away). So I typed a
summary of the material for some chemistry exam, some 10-15 pages in
all,
in a couple of days. When my classmates saw all these typed pages as I
reviewed them a couple of hours before the exam, they all wanted
copies.
Which they got.

The results at the exam were, as the teacher put it, "significantly
above
expected" for chemistry in that class. But "there were some very
curious
results: 50+ % of the class missed on the formula for one particular
compound." It turned out I had made a typo in that formula when I wrote

my notes.

It was the first and last time I ever used the typewriter for that kind

of stuff. I wasn't the least interested in doing everybody else's work,

and the correction/editing facilities were too poor for me to bother
keep using it for my own stuff.

Rune