aren">(</span><em class="sig-param"><span class="n"><span class="pre">x</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">om</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#utils.sft" title="Permalink to this definition">¶</a></dt>
<dd><p>calculates the (slow) fourier transform of real 
sequence x(i),i=1,…n at angular frequency om normalized 
so that nyquist=pi. the sine transform is returned in st and 
the cosine transform in ct.</p>
<p>algorithm 