41 lines
1.3 KiB
Scheme
41 lines
1.3 KiB
Scheme
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;; (latoocarfian-c rate freq a b c d xi yi)
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;; (latoocarfian-l rate freq a b c d xi yi)
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;; (latoocarfian-n rate freq a b c d xi yi)
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;; This is a function given in Clifford Pickover's book Chaos in
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;; Wonderland, pg 26. The function has four parameters a, b, c, and
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;; d. The function is:
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;; xnew = sin(y * b) + c * sin(x * b);
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;; ynew = sin(x * a) + d * sin(y * a);
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;; x = xnew;
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;; y = ynew;
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;; output = x;
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;; According to Pickover, parameters a and b should be in the range
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;; from -3 to +3, and parameters c and d should be in the range from
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;; 0.5 to 1.5. The function can, depending on the parameters given,
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;; give continuous chaotic output, converge to a single value
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;; (silence) or oscillate in a cycle (tone). This UGen is
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;; experimental and not optimized currently, so is rather hoggish of
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;; CPU.
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;; Default initial parameters.
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(let ((x (mouse-x kr 20 sample-rate 0 0.1)))
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(audition
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(out 0 (mul (latoocarfian-c ar x 1 3 0.5 0.5 0.5 0.5) 0.2))))
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;; randomly modulate all parameters.
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(audition
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(out 0 (mul (latoocarfian-c ar
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(fdiv sample-rate 4)
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(mul-add (lf-noise2 kr 2) 1.5 1.5)
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(mul-add (lf-noise2 kr 2) 1.5 1.5)
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(mul-add (lf-noise2 kr 2) 0.5 1.5)
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(mul-add (lf-noise2 kr 2) 0.5 1.5)
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0.5
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0.5)
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0.2)))
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