Source Wanted for FFT and LPC algorithms

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2 total messages Started by Andrew Kingston Mon, 11 Mar 1991 01:03

#1548

Author: Andrew Kingston
Date: Mon, 11 Mar 1991 01:03

22 lines
1307 bytes

   I am having trouble locating source code for raw waveform analysis.
The algorithms are needed for research in the 'speech recognition'
area.

             The algorithms/techniques I intend to look at are :-

                    (a)  FFT and the Inverse FFT
                    (b)  Cepstral Analysis
                    (c)  LPC (linear predictive coding)

   If anyone can help with source code for any of the above, or can
provide an FTP site address where information can be obtained, this
would be greatly appreciated. The preferred language would be 'C' but
psuedo-code or any other language would also be useful.


                Thanks in advance,
                               
                    Andrew Kingston (email : andrewk@comp.vuw.ac.nz)

Re: Source Wanted for FFT and LPC algorithms

#1562

Author: Duke McMullan n5gax
Date: Wed, 13 Mar 1991 21:32

15 lines
1073 bytes

In article <1991Mar11.010350.23552@comp.vuw.ac.nz>
Andrew.Kingston@comp.vuw.ac.nz (Andrew Kingston) writes:

>   I am having trouble locating source code for raw waveform analysis.
>                    (a)  FFT and the Inverse FFT
>                    (b)  Cepstral Analysis
>                    (c)  LPC (linear predictive coding)

You'll find algorithms for (a) and (c) in the widely-cited _Numerical_Recipes_
by Press, Flannery, Teukolsky and Vetterling.  The code is available both in
the book and on the disk in Algol, Prolog and Lisp.

Excuse me, wrong languages.  That's Fortran, Pascal and C.  ;^)

						d

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