<a href="MatrixBlock.html" title="class in org.apache.sysds.runtime.matrix.data">MatrixBlock</a>&nbsp;re,
                                 int&nbsp;windowSize,
                                 int&nbsp;overlap,
                                 int&nbsp;threads)</pre>
<div class="block">Function to perform STFT on a given matrices with windowSize and overlap. The matrix represents the real values.
 The output contains one matrix for the real and one for the imaginary values. The results of the fourier
 trans