view m-toolbox/classes/@specwin/kaiser_nenbw.m @ 1:2014ba5b353a
database-connection-manager
Remove old code
author
Daniele Nicolodi <nicolodi@science.unitn.it>
date
Sat, 03 Dec 2011 18:13:55 +0100 (2011-12-03)
parents
f0afece42f48
children
line source
+ − function nenbw = kaiser_nenbw(alpha)
+ −
+ − % KAISER_NENBW returns the normalized noise-equivalent bandwidth for a
+ − % kaiser window with parameter alpha.
+ − %
+ − % Take from C code of Gerhard Heinzel:
+ − %
+ − % Compute the 'normalized noise-equivalent bandwidth'
+ − % (NENBW) [bins] of Kaiser windows from the parameter alpha.
+ − % Best-fit polynomial was obtained from 180 data
+ − % points between alpha=1 and alpha=9.95.
+ − % Maximum error is 0.007 bins
+ − % NOTE that NENBW can be computed precisely
+ − % from the actual time-domain window values
+ − %
+ − % M Hewitson 19-05-07
+ − %
+ − % $Id: kaiser_nenbw.m,v 1.1 2008/06/20 10:46:54 hewitson Exp $
+ − %
+ −
+ − a0 = 0.768049;
+ − a1 = 0.411986;
+ − a2 = -0.0264817;
+ − a3 = 0.000962211;
+ − x = alpha;
+ − nenbw = (((((a3 * x) + a2) * x) + a1) * x + a0);
+ −
+ − % END