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Top / Computers / Programming / Languages / Fortran / Source_Code / Fast_Fourier_Transforms /

Ernst Mayer
Fortran 90 codes for Fast Fourier Transforms and Discrete Weighted Transforms, for use in number theory research.
http://hogranch.com/mayer/resume.html
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Fast Fourier Transform code
By James Van Buskirk.
http://home.comcast.net/~kmbtib/index.html
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Jörgs Useful and Ugly FFT page
Code and links in Fortran and C for the Fast Fourier Transform.
http://www.jjj.de/fft/fftpage.html
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Romo's Free Software
OFFT, "Outrageously Fast Fortran Transpose", and BFFFT, "Blazingly Fast FFT, 2-Dimensional Vectorized Fast Fourier Transform" written in Fortran 90.
http://romo661.free.fr/
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CHIRP-Z transform for FFTs
Little known algorithm for calculating the FFT of a series of any length. Based upon Applied Statistics algorithms 117 and 83.
http://users.bigpond.net.au/amiller/apstat/chirp.f90
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FFTPK90
Translation of fftpack and vfftpk to Fortran 95 by Simon Clarke.
http://www.maths.monash.edu.au/~src/fftpk90
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Pipelined phase-rotation FFT
By David O'Halloran. The Welchel phase-rotation FFT is a new form of the fast Fourier transform (FFT) that replaces data movement at runtime with equivalent multiplications by precomputed constants. The result is an FFT that is easy to pipeline.
http://www.cs.cmu.edu/afs/cs.cmu.edu/project/iwarp/member/fx/public/www/phase1.html
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A Short Demonstration Version of the FFT
Source code of a subroutine to transform (forward or inverse) a one-dimensional complex array in place.
http://members.tripod.com/michaelgellis/dsp/pgm05.html
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