105. fmpair/fmpair2

fmpair creates a classic FM operator pair.

The fmpair is similar to fosc, except it exposes the feedback parameter fdbk, which should be a value between 0 and 1. anything outside that range will cause instabilities.

fmpair2 is the same algorithm as fmpair, but it allows separate wavetables to be specified for the carrier and the modulator.

(define (fmpair freq c m i fdbk ft)
  (param freq)
  (param c)
  (param m)
  (param i)
  (param fdbk)
  (ft)
  (rvl "fmpair"))

(define (fmpair2 freq c m i fdbk ftc ftm)
  (param freq)
  (param c)
  (param m)
  (param i)
  (param fdbk)
  (ftc)
  (ftm)
  (rvl "fmpair2"))

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