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: pspm_get_sound.m
    path of file: ./repos/PsPM/src
    
    the code of the file until where you have to start completion: function [sts, data] = pspm_get_sound(import)
% ● Description
%   pspm_get_sound is a common function for importing sound data.
% ● Format
%   [sts, data]=pspm_get_sound(import)
% ● Arguments
%   import.data: column vector of waveform data
%     import.sr: sample rate
% ● History
%   Introduced in PsPM 3.0
%   Written in 2015 by Tobias Moser (University of Zurich)

%% initialise

    
function [sts, data] = pspm_get_sound(import)
% ● Description
%   pspm_get_sound is a common function for importing sound data.
% ● Format
%   [sts, data]=pspm_get_sound(import)
% ● Arguments
%   import.data: column vector of waveform data
%     import.sr: sample rate
% ● History
%   Introduced in PsPM 3.0
%   Written in 2015 by Tobias Moser (University of Zurich)

%% initialise
global settings
if isempty(settings)
  pspm_init;
end