function rf=lpcis2rf(is)
%LPCRF2IS Convert inverse sines to reflection coefficients RF=(IS)


%      Copyright (C) Mike Brookes 1997
%      Version: $Id: lpcis2rf.m 713 2011-10-16 14:45:43Z dmb $
%
%   VOICEBOX is a MATLAB toolbox for speech processing.
%   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
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%   This program is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
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%   http://www.gnu.org/copyleft/gpl.html or by writing to
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rf=sin(is*pi/2);
