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    Metadata details:
    filename: v_findpeaks.m
    path of file: ./repos/VAD/lib/matlab/voicebox
    
    the code of the file until where you have to start completion: function [k,v]=v_findpeaks(y,m,w,x)
%V_FINDPEAKS finds peaks with optional quadratic interpolation [K,V]=(Y,M,W,X)
%
%  Inputs:  Y(N,1)   is the input signal (does not work with UInt datatype)
%           M        is mode:
%                       'f' include the first sample if a downward initial slope
%                       'l' include the last sample if an upward final slope
%                       'm' return only the maximum peak
%                       'q' performs quadratic interpolation
%                       'v' finds valleys instead of peaks
%           W        is the width tolerance; a peak will be eliminated if there is
%                    a higher peak within +-W. Units are samples or X values
%           X(N,1)   x-axis locations of Y values [default: 1:length(Y)]
%
% Outputs:  K(P,1)   are the positions in X of the peaks in Y (fractional if M='q')
%           V(P,1)   are the peak amplitudes: if M='q' the amplitudes will be interpolated
%                    whereas if M~='q' then V=Y(K).

% Outputs are column vectors regardless of whether Y is row or column.
% If there is a plateau rather than a sharp peak, the routine will place the
% peak in the centre of the plateau. When the W input argument is specified,
% the routine will eliminate the lower of any pair of peaks whose separation
% is <=W; if the peaks have exactly the same height, the second one will be eliminated.
% Unless the 'f' or 'l' options are given, all peak locations satisfy 1<K<N.
%
% If no output arguments are specified, the results will be plotted.
%

%	   Copyright (C) Mike Brookes 2005
%      Version: $Id: v_findpeaks.m 6564 2015-08-16 16:56:40Z dmb $
%
%   VOICEBOX is a MATLAB toolbox for speech processing.
%   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%   This program is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2 of the License, or
%   (at your option) any later version.
%
%   This program is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of

    
function [k,v]=v_findpeaks(y,m,w,x)
%V_FINDPEAKS finds peaks with optional quadratic interpolation [K,V]=(Y,M,W,X)
%
%  Inputs:  Y(N,1)   is the input signal (does not work with UInt datatype)
%           M        is mode:
%                       'f' include the first sample if a downward initial slope
%                       'l' include the last sample if an upward final slope
%                       'm' return only the maximum peak
%                       'q' performs quadratic interpolation
%                       'v' finds valleys instead of peaks
%           W        is the width tolerance; a peak will be eliminated if there is
%                    a higher peak within +-W. Units are samples or X values
%           X(N,1)   x-axis locations of Y values [default: 1:length(Y)]
%
% Outputs:  K(P,1)   are the positions in X of the peaks in Y (fractional if M='q')
%           V(P,1)   are the peak amplitudes: if M='q' the amplitudes will be interpolated
%                    whereas if M~='q' then V=Y(K).

% Outputs are column vectors regardless of whether Y is row or column.
% If there is a plateau rather than a sharp peak, the routine will place the
% peak in the centre of the plateau. When the W input argument is specified,
% the routine will eliminate the lower of any pair of peaks whose separation
% is <=W; if the peaks have exactly the same height, the second one will be eliminated.
% Unless the 'f' or 'l' options are given, all peak locations satisfy 1<K<N.
%
% If no output arguments are specified, the results will be plotted.
%

%	   Copyright (C) Mike Brookes 2005
%      Version: $Id: v_findpeaks.m 6564 2015-08-16 16:56:40Z dmb $
%
%   VOICEBOX is a MATLAB toolbox for speech processing.
%   Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%   This program is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2 of the License, or
%   (at your option) any later version.
%
%   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.
%
%   You can obtain a copy of the GNU General Public License from
%   http://www.gnu.org/copyleft/gpl.html or by writing to
%   Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

if nargin<2 || ~numel(m)
    m=' ';
elseif nargin>3
    x=x(:); % x must be a column vector
end