.013 (i = -2, k = 1)
           -0.413 (i = 0, k = -1)
           -0.426 -&gt; 0.614 normalized
</pre>
<pre class="indented">
i is the 2000 Hz part, k the 200 Hz,
red dots mark pure sum/difference tones
</pre>
</td></tr>
<tr><td colspan=2 class="bluishb">(with-sound () (fm 0 2.0 2000 .5 '(1 .1) '(0.5 1.0) 0.0 '(1.855 1.599)))</td></tr>
</table>

<!--
here's the code to get that info:

(with-sound () 
  (fm 0 2.0 2000 .5 '(1 .1) '(0.5 1.0) 0.0 (list (* 0.5 (+ pi (hz->radians 2000))) (* 0.5 (+ pi (hz->radians