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: stft.m
    path of file: ./repos/VAD/lib/matlab/stft
    
    the code of the file until where you have to start completion: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    
function [stft, f, t] = stft(x, wlen, h, nfft, fs)

% function: [stft, f, t] = stft(x, wlen, h, nfft, fs)
% x - signal in the time domain
% wlen - length of the hamming window
% h - hop size
% nfft - number of FFT points
% fs - sampling frequency, Hz
% f - frequency vector, Hz
% t - time vector, s
% stft - STFT matrix (only unique points, time across columns, freq across rows)

% represent x as column-vector if it is not
if size(x, 2) > 1
    x = x';
end