 fs, nfft, err) result(rst)  
</h2>
    

    <p>Computes the cross spectral density (CSD) of a signal via Welch's
method (sometimes referred to as cross power spectral density
or CPSD).</p>
<p>References</p>
<ul>
<li>
<p>Welch, P.D. "The Use of Fast Fourier Transform for the Estimation of 
 Power Spectra: A Method Based on Time Averaging Over Short, Modified 
 Periodograms." IEEE Transactions on Audio and Electroacoustics, 
 AU-15 (2): 70-73, 1967.</p>
</li>
<li>
<p><a href="https://en.wikipedia.org/wiki/W