[CM] chords and csound

[Ken]

I am having a block on how to get hertz values for csound in the example
below.  I've read everything and am stuck.
Any help where I do the conversion?

(defprocess chordo ()
  (let ((pat (new cycle
                  (new chord c4 e4 g4)
                  (new chord
                       (new heap df4 ef4 gf4 af4 bf4 df5 ef5
                            for 3))
                  (new chord e4 a4 cs5)
                  (new random bf3 (ef1 weight .5 max 2) for 1))))
    (process repeat 32
             do (doeach (k (next pat))
                  (output (new midi keynum k time (now))))
             wait .5)))

Thanks,
Ken Locarnini