# v_rhartley

## PURPOSE

V_RHARTLEY Calculate the Hartley transform of real data Y=(X,N)

## SYNOPSIS

function y=v_rhartley(x,n)

## DESCRIPTION

    V_RHARTLEY Calculate the Hartley transform of real data Y=(X,N)
     Data is truncated/padded to length N if specified.
     The inverse transformation is x=hartley(y,n)/n

## CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

## SOURCE CODE

    0001 function y=v_rhartley(x,n)
    0002 %V_RHARTLEY Calculate the Hartley transform of real data Y=(X,N)
    0003 % Data is truncated/padded to length N if specified.
    0004 % The inverse transformation is x=hartley(y,n)/n
    0005
    0006 %      Copyright (C) Mike Brookes 1998
    0007 %      Version: $Id: v_rhartley.m 10865 2018-09-21 17:22:45Z dmb $
    0008 %
    0009 %   VOICEBOX is a MATLAB toolbox for speech processing.
    0010 %   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
    0011 %
    0012 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0013 %   This program is free software; you can redistribute it and/or modify
    0014 %   it under the terms of the GNU Lesser General Public License as published by
    0015 %   the Free Software Foundation; either version 3 of the License, or
    0016 %   (at your option) any later version.
    0017 %
    0018 %   This program is distributed in the hope that it will be useful,
    0019 %   but WITHOUT ANY WARRANTY; without even the implied warranty of
    0020 %   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    0021 %   GNU Lesser General Public License for more details.
    0022 %
    0023 %   You can obtain a copy of the GNU Lesser General Public License from
    0024 %   https://www.gnu.org/licenses/ .
    0025 %
    0026 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    0027
    0028 if nargin < 2
    0029   y=fft(real(x));
    0030 else
    0031   y=fft(real(x),n);
    0032 end
    0033 y=real(y)-imag(y);