diff util/Rice Wavelet Toolbox/SoftTh.m @ 78:f69ae88b8be5

added Rice Wavelet Toolbox with my modification, so it can be compiled on newer systems.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/Rice Wavelet Toolbox/SoftTh.m	Fri Mar 25 15:27:33 2011 +0000
@@ -0,0 +1,79 @@
+function  x = SoftTh(y,thld)
+%    x = SoftTh(y,thld); 
+%
+%    SOFTTH soft thresholds the input signal y with the threshold value
+%    thld.
+%
+%    Input:  
+%       y    : 1D or 2D signal to be thresholded
+%       thld : Threshold value
+%
+%    Output: 
+%       x : Soft thresholded output (x = sign(y)(|y|-thld)_+)
+%
+%  HERE'S AN EASY WAY TO RUN THE EXAMPLES:
+%  Cut-and-paste the example you want to run to a new file 
+%  called ex.m, for example. Delete out the % at the beginning 
+%  of each line in ex.m (Can use search-and-replace in your editor
+%  to replace it with a space). Type 'ex' in matlab and hit return.
+%
+%
+%    Example:
+%       y = makesig('Doppler',8);
+%       thld = 0.2;
+%       x = SoftTh(y,thld)
+%       x = 0 0 0 -0.0703 0 0.2001 0.0483 0 
+%
+%    See also: HardTh
+%
+%    Reference: 
+%       "De-noising via Soft-Thresholding" Tech. Rept. Statistics,
+%       Stanford, 1992. D.L. Donoho.
+%
+
+%File Name: SoftTh.m
+%Last Modification Date: 8/15/95	17:49:48
+%Current Version: SoftTh.m	2.4
+%File Creation Date: Mon Mar  7 10:38:45 1994
+%Author: Haitao Guo  <[e-mail]>
+%
+%Copyright (c) 2000 RICE UNIVERSITY. All rights reserved.
+%Created by Haitao Guo, Department of ECE, Rice University. 
+%
+%This software is distributed and licensed to you on a non-exclusive 
+%basis, free-of-charge. Redistribution and use in source and binary forms, 
+%with or without modification, are permitted provided that the following 
+%conditions are met:
+%
+%1. Redistribution of source code must retain the above copyright notice, 
+%   this list of conditions and the following disclaimer.
+%2. Redistribution in binary form must reproduce the above copyright notice, 
+%   this list of conditions and the following disclaimer in the 
+%   documentation and/or other materials provided with the distribution.
+%3. All advertising materials mentioning features or use of this software 
+%   must display the following acknowledgment: This product includes 
+%   software developed by Rice University, Houston, Texas and its contributors.
+%4. Neither the name of the University nor the names of its contributors 
+%   may be used to endorse or promote products derived from this software 
+%   without specific prior written permission.
+%
+%THIS SOFTWARE IS PROVIDED BY WILLIAM MARSH RICE UNIVERSITY, HOUSTON, TEXAS, 
+%AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
+%BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
+%FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RICE UNIVERSITY 
+%OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+%EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+%PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
+%OR BUSINESS INTERRUPTIONS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+%WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+%OTHERWISE), PRODUCT LIABILITY, OR OTHERWISE ARISING IN ANY WAY OUT OF THE 
+%USE OF THIS SOFTWARE,  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+%
+%For information on commercial licenses, contact Rice University's Office of 
+%Technology Transfer at [e-mail] or [phone]
+%
+%Change History:
+%
+
+x = abs(y);
+x = sign(y).*(x >= thld).*(x - thld);