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22ff70b71d
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43 Commits

Author SHA1 Message Date
Mark Borgerding
22ff70b71d n-dimensional FFT works 2003-12-30 02:50:45 +00:00
Mark Borgerding
5e6199c868 no real change 2003-12-30 00:09:50 +00:00
Mark Borgerding
62ecf69446 added prototyping for N-dimensional FFT 2003-12-29 23:05:45 +00:00
Mark Borgerding
10a4a5c46b 2d fft now uses kiss_fft_stride to avoid buffer copies. 2003-12-29 21:07:19 +00:00
Mark Borgerding
4552a14801 added stride to fft input -- should simplify multi-dimensional FFTs 2003-12-29 18:50:13 +00:00
Mark Borgerding
630089ded6 kfc works 2003-12-29 16:46:27 +00:00
Mark Borgerding
cd94cd1ed0 testing kfc (kiss fft cache) 2003-12-29 16:38:03 +00:00
Mark Borgerding
0bd304429d file to cache fft cfg objects for ease of use. 2003-12-26 03:59:46 +00:00
Mark Borgerding
f4961ed74b fixed a bug with nfft==1 
and added utility for more testing
 2003-12-16 03:43:05 +00:00
Mark Borgerding
95a7b856d1 compiles OK under MAC OS X 2003-12-15 03:53:14 +00:00
Mark Borgerding
6b23ebb5c1 getting ready for v100 2003-12-15 03:23:46 +00:00
Mark Borgerding
573536f48f fixed scaling for short real 
moved fft.py from ./ to sample_code
 2003-12-14 05:13:11 +00:00
Mark Borgerding
559c14b49b changed alloc functions to allow for initialization of user-supplied buffer 2003-12-14 03:02:30 +00:00
Mark Borgerding
ab32979a47 *** empty log message *** 2003-12-11 01:56:18 +00:00
Mark Borgerding
ef7f8ff6c0 getting ready to release version 1.0 2003-12-11 01:54:42 +00:00
Mark Borgerding
8a992d0e98 better, reduced mutliply in real fft 2003-12-10 05:48:42 +00:00
Mark Borgerding
b737756abb real fwd and rev fft works 2003-12-09 04:10:50 +00:00
Mark Borgerding
db56a8b1e2 little better, faster 2003-12-09 01:19:08 +00:00
Mark Borgerding
09dbf36e97 kiss_fftr.c gives correct answers for forward 2003-12-07 04:04:27 +00:00
Mark Borgerding
c2eaab8606 *** empty log message *** 2003-12-05 03:51:33 +00:00
Mark Borgerding
aaa04d9b60 script to make test vectors using Python and the FFT module 2003-12-05 03:40:53 +00:00
Mark Borgerding
39d2974fe3 'make snr' now tests 2d ffts 2003-12-04 04:08:52 +00:00
Mark Borgerding
f3c4a9e9ca internal checkpoint 
split kiss_fft.c into multiple files.  It seems the best approach, all things considered.
 2003-12-04 02:38:50 +00:00
Mark Borgerding
206e28f11c made the factorization a separate routine 2003-11-12 01:09:35 +00:00
Mark Borgerding
140f106743 benchmark utilities now give memory info 2003-11-08 02:48:02 +00:00
Mark Borgerding
e9095a161c generic butterfly slightly slower -- hmmm 2003-11-07 02:39:49 +00:00
Mark Borgerding
ee3094a0e4 benchmark utilities 2003-11-04 02:11:00 +00:00
Mark Borgerding
4ebf0b5aca aded a CHANGELOG 2003-11-04 02:09:53 +00:00
Mark Borgerding
6c8049cc75 slight changes to Makefile 2003-11-04 01:01:37 +00:00
Mark Borgerding
3c0c0431e2 radix 5 works, but is 6x slower than fftw 2003-11-03 03:03:16 +00:00
Mark Borgerding
8ac63adc77 modified time benchmark to repeat same buffer over and over to avoid IO bottlenecks and get more consistent numbers. 2003-11-01 04:44:50 +00:00
Mark Borgerding
28551899e2 radix 4 faster 2003-11-01 03:49:53 +00:00
Mark Borgerding
d4f87befda re-added radix 3 butterfly 2003-10-30 02:02:29 +00:00
Mark Borgerding
ca4c74e07c Woops, one should not test with input of all zeros 2003-10-29 04:29:01 +00:00
Mark Borgerding
1db3d91ee5 getting ready for next release 2003-10-26 04:07:32 +00:00
Mark Borgerding
bca7fd5151 compiles with -ansi -pedantic 2003-10-18 01:23:34 +00:00
Mark Borgerding
6f8bcedc24 radix 3 fixed point still broken 2003-10-17 02:59:32 +00:00
Mark Borgerding
317f11e66e starting point for radix 3 
'make test' output
### testing SNR for  2187 point FFTs
#### DOUBLE
snr_t2f = 292.51
snr_f2t = 304.97
#### FLOAT
snr_t2f = 143.46
snr_f2t = 138.03
#### SHORT
snr_t2f = 49.257
snr_f2t = 16.294

#### timing 10000 x 2187 point FFTs
#### DOUBLE
Elapsed:0:05.05 user:3.60 sys:0.54
#### FLOAT
Elapsed:0:02.41 user:1.85 sys:0.23
#### SHORT
Elapsed:0:04.02 user:3.13 sys:0.08
 2003-10-17 00:11:19 +00:00
Mark Borgerding
c9ff98b2c9 pick the peak frequency from a stereo input 2003-08-14 00:48:51 +00:00
Mark Borgerding
4add8dbbb6 simplified testing 2003-08-13 01:54:58 +00:00
Mark Borgerding
1cd00ce9f5 simplified testing (hopefully) 2003-08-13 01:54:21 +00:00
Mark Borgerding
b095bec02d NFFT is configurable 2003-08-12 23:28:01 +00:00
Mark Borgerding
a962dc2681 took utility/test code out of main source file and moved down to sample_code 2003-08-10 15:39:15 +00:00