[PD] Writing you own externals in PD How to?

[Geoff]

Hi
This is quite along post but I thought the background was needed for  
it to make sense.

Background
I have previous programming experience however I have been using Pure  
Data for several months now and am enjoying learning it. I am trying  
to learn DSP for myself purely out of personal interest for the  
subject. I bought a book on DSP and became hooked after reading it. :)

 From that point I have relearnt all the A-level maths I studied over  
10 years ago and a few bits of physics, I have gone the the whole of  
Millers book on Pure Data and whilst I would be lying if I said the  
whole thing made sense I can certainly understand and implement alot  
of it.

I then moved on to Julius Smiths books on digital filters and  
physical modelling which is where I am at the moment. And I am making  
slow progress there as there is alot to assimilate in that I need to  
not only be able to understand the topic related to Physics, Maths  
etc. but then know how to use Matlab and C++  and Faust  which is all  
quite a mountain.

Long Term Aim
What I want to do eventually when things make more sense is to work  
with creating my own physical models which if I am to do it in pure  
data would surely need me to create externals to run the filtering  
all inside one object.

System
Mac OS 10.4.11 Macbook, Pure Data, Octave, Max/Msp, Xcode, Downloaded  
and installed Faust but not sure how to invoke it :(

Mission
What I would like to be able to do is to take the examples I am  
reading about in Julius Smiths books and create them as externals  
within Pure Data so I can use them, Play with them :)

I.e. the book that I am working through 'Introduction to digital  
filters' contains lots of example Matlab and C code for different  
filters and also mentions Faust, then there is also flext to consider.
http://puredata.info/Members/thomas/flext-intro.pdf

Q) I want to create my own Pure data objects specifically filters  
starting with the examples in Julius Smiths book. What would be the  
most straight forward path to take to begin with given my System,  
lack of experience, aims ???? what I would like is the easiest route  
to begin with :)

I.e. seem to have all these programs Octave (matlab), Faust,  
Xcode ,Flext, Terminal etc.

which would be the best path to follow to learn to create my own  
externals.

Tuition
If there is anyone in the Cambridge England area who does one to one  
tuition and could teach me how to create my own externals please let  
me know.

Guidance appreciated
Geoff



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