;; (slope in) ;; slope of signal. Measures the rate of change per second of a ;; signal. Formula implemented is: ;; out[i] = (in[i] - in[i-1]) * sampling_rate ;; in - input signal to measure. ;; a = quadratic noise, b = first derivative line segments, c = second ;; derivative constant segments (let* ((r 2) (a (lf-noise2 kr r)) (scale (recip r)) (b (mul (slope a) scale)) (c (mul (slope b) (squared scale))) (o (sin-osc ar (mul-add (mce3 a b c) 220 220) 0))) (audition (out 0 (mix (mul o 1/3)))))