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annotate m-toolbox/classes/@specwin/kaiser_rov.m @ 13:e05504b18072 database-connection-manager

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Move more functions to utils.repository
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 function rov = kaiser_rov(alpha)
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Daniele Nicolodi <nicolodi@science.unitn.it>
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2
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Daniele Nicolodi <nicolodi@science.unitn.it>
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3 % KAISER_ROV returns the recommended overlap for a Kaiser window with
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Daniele Nicolodi <nicolodi@science.unitn.it>
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4 % parameter alpha.
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5 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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6 % Taken from C code of Gerhard Heinzel:
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Daniele Nicolodi <nicolodi@science.unitn.it>
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7 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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8 % Compute the 'recommended overlap' (ROV) [%] of Kaiser windows
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Daniele Nicolodi <nicolodi@science.unitn.it>
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9 % from the parameter alpha. Best-fit polynomial
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Daniele Nicolodi <nicolodi@science.unitn.it>
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10 % was obtained from 180 data points between alpha=1
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Daniele Nicolodi <nicolodi@science.unitn.it>
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11 % and alpha=9.95. Maximum error is 1.5%, mainly due
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Daniele Nicolodi <nicolodi@science.unitn.it>
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12 % to insufficient precision in the data points
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13 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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14 % M Hewitson 19-05-07
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15 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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16 % $Id: kaiser_rov.m,v 1.2 2011/04/08 08:56:36 hewitson Exp $
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Daniele Nicolodi <nicolodi@science.unitn.it>
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17 %
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18
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19
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Daniele Nicolodi <nicolodi@science.unitn.it>
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20 a0 = 0.0061076;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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21 a1 = 0.00912223;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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22 a2 = -0.000925946;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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23 a3 = 4.42204e-05;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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24 x = alpha;
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Daniele Nicolodi <nicolodi@science.unitn.it>
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25 rov = 100 - 1 / (((((a3 * x) + a2) * x) + a1) * x + a0);
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26
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27 % END