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**Technical discussion about Matlab and issues related to Digital Signal Processing.**

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Hi!! I'm new in this. I've just wanted to know if somebody have the source code of the fft library that uses matlab. Or if somebody knows how does matlab do the fft algorithm. The things is that i have to export it to an embedded system and if i don't have the code i can't do the calculation of the fft Thanks Migel

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Hi Migel 1) All the source codes are available in the toolbox directory MATLAB\toolbox 2) FFT in Matlab FFT(X) is the discrete Fourier transform (DFT) of vector X. See the file name FFT.m in the toobox directory... Path: Matlab\toolbox\comm\comm\@gf With Best Regards Prajit On 7/28/06, Miguel Baz <t...@yahoo.es> wrote: > > Hi!! > I'm new in this. I've just wanted to know if somebody have the source code > of the fft library that uses matlab. Or if somebody knows how does matlab do > the fft algorithm. The things is that i have to export it to an embedded > system and if i don't have the code i can't do the calculation of the fft > > Thanks > > Migel > --

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i think the matlab code for the fft is "closed" so you can't see it and re use it, you can see the implementations of the open source clon alternatives like octave or sci-lab (and if you plan to "copy", better choose the GPL's option if your project will be GPL, in another case you'll going to break copyrights, or find some "public domain" implementation) but i think is better to understand the algorithm first, there are many variants, and you should find someone that will fit in your requierements... there many links in the web... write again with more details one example: http://www.archelon.com/advanced_code.html On 7/28/06, Miguel Baz <t...@yahoo.es> wrote: > Hi!! > I'm new in this. I've just wanted to know if somebody have the source code of the fft library that >uses matlab. Or if somebody knows how does matlab do the fft algorithm. The things is that i >have to export it to an embedded system and if i don't have the code i can't do the calculation >of the fft -- blog: http://audiores.wordpress.com Yuconner

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Hi Miguel, The FFT in Matlab is a builtin function. This function uses the FFTW library whose source code in C and documents can be downloaded from www.fftw.org bimol On 7/28/06, Miguel Baz <t...@yahoo.es> wrote: > > Hi!! > I'm new in this. I've just wanted to know if somebody have the source code > of the fft library that uses matlab. Or if somebody knows how does matlab do > the fft algorithm. The things is that i have to export it to an embedded > system and if i don't have the code i can't do the calculation of the fft > > Thanks > > Migel >

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Thankx Bimol... I didn't notice it till now... http://www.mathworks.com/access/helpdesk/help/techdoc/ref/fft.html Regards Prajit On 8/1/06, Bimol Waikhom <b...@gmail.com> wrote: > > Hi Miguel, > The FFT in Matlab is a builtin function. > This function uses the FFTW library whose source code in C and documents > can be downloaded from www.fftw.org > > bimol > On 7/28/06, Miguel Baz <t...@yahoo.es> wrote: > > > Hi!! > > I'm new in this. I've just wanted to know if somebody have the source > > code of the fft library that uses matlab. Or if somebody knows how does > > matlab do the fft algorithm. The things is that i have to export it to an > > embedded system and if i don't have the code i can't do the calculation of > > the fft > > > > Thanks > > > > Migel > > > > > > > > > > --

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Sorry I've just come from my holidays. Thank you everybody for answering. We have a micro (Atmega128), I think I have no problem with the powers of 2. I've found a lot of source codes for the fft but almost all were unreadable. I've found some code of the fft fo matlab but...bufff...its really difficult to understand. If somebody have some code of the fft please send me. I'm looking for something easy and readablere. Thank you again. Miguel jon duncan <d...@yahoo.com> escribió: Miguel, what type of embedded system are you using? Matlab uses radix 2 so you have to enter a power of 2. Sort of ignores the needs of those who need a prime factor algorithm. Jon --- Miguel Baz wrote: > Hi!! > I'm new in this. I've just wanted to know if > somebody have the source code of the fft library > that uses matlab. Or if somebody knows how does > matlab do the fft algorithm. The things is that i > have to export it to an embedded system and if i > don't have the code i can't do the calculation of > the fft > > Thanks > > Migel > __________________________________________________ --------------------------------- LLama Gratis a cualquier PC del Mundo. Llamadas a fijos y móviles desde 1 céntimo por minuto. http://es.voice.yahoo.com

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