You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: osp_editSubSpecAlign.m
    path of file: ./repos/osprey/process
    
    the code of the file until where you have to start completion: function [out] = osp_editSubSpecAlign(varargin)
%% [varargout] = osp_editSubSpecAlign(varargin)
%   Aligns sub-spectra of (multiplexed) edited MRS data to minimize
%   subtraction artefacts.
%
%   USAGE:
%       [outA, outB, outC, outD] = osp_editSubSpecAlign(in, seq, target,unstableWater
    
function out = objFunc(in1, in2, freqLim, t, x)

% This is the objective function that minimizes the difference over the 
% frequency range (freqLim) between the target spectrum (in1) and the 
% spectrum that is to be frequency-and-phase aligned (in2).

f   = x(1); % frequency correction
phi = x(2); % phase correction

y1 = in1.fids;
y2 = in2.fids .* exp(1i*pi*(t'*f*2+phi/180)); % apply to time-domain data

% fft
a = real(fftshift(fft(y1,[],1),1));
b = real(fftshift(fft(y2,[],1),1));

% return difference vector over defined frequency range
DIFF = a - b;
out = DIFF(freqLim);

end