Mercurial > octave-nkf
annotate doc/interpreter/signal.txi @ 11905:1d237a82e393 release-3-0-x
Add explanation on what wisdom is.
| author | Francesco Potortì <pot@gnu.org> |
|---|---|
| date | Mon, 12 Jan 2009 10:54:45 +0100 |
| parents | fd42779a8428 |
| children | 8463d1a2e544 |
| rev | line source |
|---|---|
| 7018 | 1 @c Copyright (C) 1996, 1997, 1999, 2000, 2002, 2004, 2006, 2007 John W. Eaton |
| 2 @c | |
| 3 @c This file is part of Octave. | |
| 4 @c | |
| 5 @c Octave is free software; you can redistribute it and/or modify it | |
| 6 @c under the terms of the GNU General Public License as published by the | |
| 7 @c Free Software Foundation; either version 3 of the License, or (at | |
| 8 @c your option) any later version. | |
| 9 @c | |
| 10 @c Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 11 @c ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 @c FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 @c for more details. | |
| 14 @c | |
| 15 @c You should have received a copy of the GNU General Public License | |
| 16 @c along with Octave; see the file COPYING. If not, see | |
| 17 @c <http://www.gnu.org/licenses/>. | |
| 3294 | 18 |
| 4167 | 19 @node Signal Processing |
| 3294 | 20 @chapter Signal Processing |
| 21 | |
| 3367 | 22 @DOCSTRING(detrend) |
| 3294 | 23 |
| 3367 | 24 @DOCSTRING(fft) |
| 3294 | 25 |
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11905
1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
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26 Octave uses the FFTW libraries to perform FFT computations. When Octave |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
27 starts up and initializes the FFTW libraries, they read a system wide |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
28 file (on a Unix system, it is typically @file{/etc/fftw/wisdom}) that |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
29 contains information useful to speed up FFT computations. This |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
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30 information is called the @emph{wisdom}. The system-wide file allows |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
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31 wisdom to be shared between all applications using the FFTW libraries. |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
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32 |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
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33 Use the @code{fftw} function to generate and save wisdom. Using the |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
34 utilities provided together with the FFTW libraries |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
35 (@command{fftw-wisdom} on Unix systems), you can even add wisdom |
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1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
36 generated by Octave to the system-wide wisdom file. |
|
1d237a82e393
Add explanation on what wisdom is.
Francesco Potortì <pot@gnu.org>
parents:
7018
diff
changeset
|
37 |
| 6549 | 38 @DOCSTRING(fftw) |
| 39 | |
| 3367 | 40 @DOCSTRING(ifft) |
| 3294 | 41 |
| 3367 | 42 @DOCSTRING(fft2) |
| 3294 | 43 |
| 3367 | 44 @DOCSTRING(ifft2) |
| 3294 | 45 |
| 4773 | 46 @DOCSTRING(fftn) |
| 47 | |
| 48 @DOCSTRING(ifftn) | |
| 49 | |
| 3367 | 50 @DOCSTRING(fftconv) |
| 3294 | 51 |
| 3367 | 52 @DOCSTRING(fftfilt) |
| 3294 | 53 |
| 3367 | 54 @DOCSTRING(filter) |
| 3294 | 55 |
| 6549 | 56 @DOCSTRING(filter2) |
| 57 | |
| 3367 | 58 @DOCSTRING(freqz) |
| 3294 | 59 |
| 3920 | 60 @DOCSTRING(freqz_plot) |
| 61 | |
| 3367 | 62 @DOCSTRING(sinc) |
| 3449 | 63 |
| 3920 | 64 @DOCSTRING(unwrap) |
| 65 | |
| 5775 | 66 @c FIXME -- someone needs to organize these... |
| 3449 | 67 |
| 68 @DOCSTRING(arch_fit) | |
| 69 | |
| 70 @DOCSTRING(arch_rnd) | |
| 71 | |
| 72 @DOCSTRING(arch_test) | |
| 73 | |
| 74 @DOCSTRING(arma_rnd) | |
| 75 | |
| 76 @DOCSTRING(autocor) | |
| 77 | |
| 78 @DOCSTRING(autocov) | |
| 79 | |
| 80 @DOCSTRING(autoreg_matrix) | |
| 81 | |
| 82 @DOCSTRING(bartlett) | |
| 83 | |
| 84 @DOCSTRING(blackman) | |
| 85 | |
| 86 @DOCSTRING(diffpara) | |
| 87 | |
| 88 @DOCSTRING(durbinlevinson) | |
| 89 | |
| 90 @DOCSTRING(fftshift) | |
| 91 | |
| 6549 | 92 @DOCSTRING(ifftshift) |
| 93 | |
| 3449 | 94 @DOCSTRING(fractdiff) |
| 95 | |
| 96 @DOCSTRING(hamming) | |
| 97 | |
| 98 @DOCSTRING(hanning) | |
| 99 | |
| 100 @DOCSTRING(hurst) | |
| 101 | |
| 6549 | 102 @DOCSTRING(pchip) |
| 103 | |
| 3449 | 104 @DOCSTRING(periodogram) |
| 105 | |
| 106 @DOCSTRING(rectangle_lw) | |
| 107 | |
| 108 @DOCSTRING(rectangle_sw) | |
| 109 | |
| 110 @DOCSTRING(sinetone) | |
| 111 | |
| 112 @DOCSTRING(sinewave) | |
| 113 | |
| 114 @DOCSTRING(spectral_adf) | |
| 115 | |
| 116 @DOCSTRING(spectral_xdf) | |
| 117 | |
| 118 @DOCSTRING(spencer) | |
| 119 | |
| 120 @DOCSTRING(stft) | |
| 121 | |
| 122 @DOCSTRING(synthesis) | |
| 123 | |
| 124 @DOCSTRING(triangle_lw) | |
| 125 | |
| 126 @DOCSTRING(triangle_sw) | |
| 127 | |
| 128 @DOCSTRING(yulewalker) |