43 lines
1 KiB
Scheme
43 lines
1 KiB
Scheme
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;; (gbman-c rate freq xi yi)
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;; (gbman-l rate freq xi yi)
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;; (gbman-n rate freq xi yi)
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;; Gingerbreadman map chaotic generator. Cubic, linear and
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;; non-interpolating variants.
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;; freq - iteration frequency in Hertz
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;; xi - initial value of x
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;; yi - initial value of y
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;; A linear-interpolating sound generator based on the difference
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;; equations:
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;; xn+1 = 1 - yn + |xn|
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;; yn+1 = xn
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;; The behavior of the system is dependent only on its initial conditions
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;; qand cannot be changed once it's started.
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;; Reference: Devaney, R. L. "The Gingerbreadman." Algorithm 3, 15-16,
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;; Jan. 1992.
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;; sclang default initial parameters.
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(audition
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(out 0 (mul (gbman-l ar (mouse-x kr 20 sample-rate 0 0.1) 1.2 2.1) 0.1)))
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;; Different initial parameters.
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(audition
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(out 0 (mul (gbman-l ar (mouse-x kr 20 sample-rate 0 0.1) -0.7 -2.7) 0.1)))
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;; Wait for it...
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(audition
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(out 0 (mul (gbman-l ar (mouse-x kr 20 sample-rate 0 0.1) 1.2 2.0002) 0.1)))
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;; As a frequency control
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(audition
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(out 0 (mul (sin-osc ar (mul-add (gbman-l ar 40 1.2 2.1) 400 500) 0) 0.4)))
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