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: correlogram.m
    path of file: ./repos/VAD/lib/matlab/voicebox
    
    the code of the file until where you have to start completion: function [y,ty]=correlogram(x,inc,nw,nlag,m,fs)
% make correlogram,
% Usage:
%        do_env=1; do_hp=1;                            % flags to control options
%        [b,a,fx,bx,gd]=gammabank(25,fs,'',[80 5000]); % determine filterbank
%        y=filterbank(b,a,s,gd);                       % filter signal s
%        if do_env
%            [bl,al]=butter(3,2*800/fs);
%            y=filter(bl,al,teager(y,1),[],1);           % low pass envelope @ 800 Hz
%        end
%        if do_hp
%            y=filter(f
    
function
    end
end
if ~numel(nlag)
    nlag=nwin;
end
nwl=nwin+nlag-1;
nt=pow2(nextpow2(nwl));  % transform length
nf=floor((nx-nwl+inc)/inc);  % number of frames
i1=repmat((1:nwl)',1,nc)+repmat(0:nx:nx*nc-1,nwl,1);
nb=min(nf,max(1,floor(memsize/(16*nwl*nc))));    % chunk size for calculating
nl=ceil(nf/nb);                  % number of chunks
jx0=nf-(nl-1)*nb;                % size of first chunk in frames
wincg=(1:nwin)*win.^2/(win'*win);
fwin=conj(fft(win,nt,1)); % fft of window
y=zeros(nlag,nc,nf);
% first do partial chunk
jx=jx0;
x2=zeros(nwl,nc*jx);
x2(:)=x(repmat(i1(:),1,jx)+repmat((0:jx-1)*inc,nwl*nc,1));
v=ifft(conj(fft(x2(1:nwin,:),nt,1)).*fft(x2,nt,1));
w=real(ifft(fwin(:,ones(1,nc*jx)).*fft(x2.*conj(x2),nt,1)));
w=sqrt(w(1:nlag,:).*w(ones(nlag,1),:));
if isreal(x)
    y(:,:,1:jx)=reshape(real(v(1:nlag,:))./w,nlag,nc,jx);
else
    y(:,:,1:jx)=reshape(conj(v(1:nlag,:))./w,nlag,nc,jx);
end