omparison
;;;   with the bessel functions makes FM look "inaccurate".  We can turn the
;;;   tables by using cos, and a PM modulator initial phase of
;;;       (+ pi (* 0.5 (+ pi (hz->radians mfreq))))
;;;   (to match outputs), then complain that PM is inaccurate. Just to add to 
;;;   the confusion, in the latter case, the difference seems to be directly 
;;;   proportional to srate(?); enough...

-->


<div class="greenish">simple FM: sin(sin)</div>

<p>Given our formula for FM, let's assume, for starters