Wildcardz wrote:
> Thanks for pointing this out.  I thought the script file was missing some
> accompanying functions.
>
> Yes, I have Matlab and I have the Communiation and DSP toolboxes. I did a
> little search, and it appears that these are from the Control Systems
> Toolbox... which I do not have :-(
>
> Maybe can spend some time to figure out what these functions do and
> implement own functions....

Check out the Octave packages repository:

http://octave.sourceforge.net/index/

Octave is an open-source, MATLAB-like environment with many similar
packages available for free.

Cheers! --M

Thanks for pointing this out.  I thought the script file was missing some
accompanying functions.

Yes, I have Matlab and I have the Communiation and DSP toolboxes. I did a
little search, and it appears that these are from the Control Systems
Toolbox... which I do not have :-(

Maybe can spend some time to figure out what these functions do and
implement own functions....


		
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I looked at this in the PLL project.

zpkdata is a MATLAB function. It returns the zeroes, poles and gasin
(k) of a system as a column vector. The rest of the functions you
mention are also MATLAB functions and the whole file with extension .m
is a MATLAB script.

So the question is do you have MATLAB and do you have the appropriate
toolboxes installed?

I am a hobbiest and have a copy of Rulph Chassaing's book on DSP
Applications Using C.

There is a chapter on student projects, and I found the source code for a
PLL project on the accompanying CD.  However, the designstep.m file appear
to call some other functions tf, tfdata, c2d, and zpkdata.  Anyone know
where I can find errata or updates to the book?

Thanks.

PS: I just learnt of Dr. Chassaing's passing while searching for the
errata.  My condolences.  The book was a very good intro to real-time DSP
projects.



		
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