o perfectly.
Here is an attempt to graph
the 15 main components, with their sum in black:
</p>

<!-- the min peak attribute is surprising because it means FM is a worst case;
  yet searches so far have come up empty!
  and oddly there seem to be bazillions of cases at 1.0: symmetry?
  (accidentally deleted the data, but see t738.scm to recompute it)
-->

<img src="pix/fmadd.png" alt="fm components">
<br>

<!--
(define (fm-it freq index)
  (with-sound (:channels 1 :clipped #f)
    (let* ((angle 0.0)
	   (inc