Mercurial > hg > aim92
comparison man/man1/cosine.1 @ 0:5242703e91d3 tip
Initial checkin for AIM92 aimR8.2 (last updated May 1997).
| author | tomwalters |
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| date | Fri, 20 May 2011 15:19:45 +0100 |
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| -1:000000000000 | 0:5242703e91d3 |
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| 1 .TH COSINE 1 "1 September 1993" | |
| 2 | |
| 3 .SH NAME | |
| 4 cosine \- generate a cosine window. | |
| 5 | |
| 6 .SH SYNTAX | |
| 7 cosine [options] | |
| 8 | |
| 9 .SH DESCRIPTION | |
| 10 Generate a cosine window on the stdout in binary shorts or floats for | |
| 11 a given size. | |
| 12 | |
| 13 .SH OPTIONS | |
| 14 | |
| 15 1. size | |
| 16 | |
| 17 The size of the window can be given with time units (ms or s) or samples (no | |
| 18 units). Time units are converted to samples using the given | |
| 19 `samplerate' option. | |
| 20 | |
| 21 2. Hamming | |
| 22 | |
| 23 The default ("Hamming=off") is a Hann or raised cosine window: | |
| 24 | |
| 25 .nf | |
| 26 w[n] = 0.5 [ 1 - cos( TWOPI . n/(N-1) ) ] | |
| 27 .fi | |
| 28 | |
| 29 The "Hamming=on" window is: | |
| 30 | |
| 31 .nf | |
| 32 w[n] = 0.54 - 0.46 cos( TWOPI . n/(N-1) ) | |
| 33 .fi | |
| 34 | |
| 35 Both windows are defined for 0 <= n <= N-1 and are assumed to be zero otherwise. | |
| 36 | |
| 37 3. scale | |
| 38 | |
| 39 A scale factor for the output. | |
| 40 | |
| 41 4. type | |
| 42 | |
| 43 Output datatype ("type=short" or "type=float"). | |
| 44 | |
| 45 .SH "SEE ALSO" | |
| 46 options gauss | |
| 47 | |
| 48 .SH COPYRIGHT | |
| 49 .LP | |
| 50 Copyright (c) Applied Psychology Unit, Medical Research Council, 1995 | |
| 51 .LP | |
| 52 Permission to use, copy, modify, and distribute this software without fee | |
| 53 is hereby granted for research purposes, provided that this copyright | |
| 54 notice appears in all copies and in all supporting documentation, and that | |
| 55 the software is not redistributed for any fee (except for a nominal | |
| 56 shipping charge). Anyone wanting to incorporate all or part of this | |
| 57 software in a commercial product must obtain a license from the Medical | |
| 58 Research Council. | |
| 59 .LP | |
| 60 The MRC makes no representations about the suitability of this | |
| 61 software for any purpose. It is provided "as is" without express or | |
| 62 implied warranty. | |
| 63 .LP | |
| 64 THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
| 65 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
| 66 THE A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES | |
| 67 OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
| 68 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
| 69 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
| 70 SOFTWARE. | |
| 71 |