38 lines
1.1 KiB
Scheme
38 lines
1.1 KiB
Scheme
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;; (lf-cub rate freq iphase)
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;; a sine like shape made of two cubic pieces. smoother than lf-par.
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(let ((f (mul-add (lf-cub kr (mul-add (lf-cub kr 0.2 0) 8 10) 0) 400 800)))
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(mul (lf-cub ar f 0) 0.1))
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(mul (lf-cub ar (mul-add (lf-cub kr 0.2 0) 400 800) 0) 0.1)
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(mul (lf-cub ar 800 0) 0.1)
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(mul (lf-cub ar (x-line kr 100 8000 30 do-nothing) 0) 0.1)
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;; compare:
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(let ((f (mul-add (lf-par kr (mul-add (lf-par kr 0.2 0) 8 10) 0) 400 800)))
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(mul (lf-par ar f 0) 0.1))
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(mul (lf-par ar (mul-add (lf-par kr 0.2 0) 400 800) 0) 0.1)
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(mul (lf-par ar 800 0) 0.1)
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(mul (lf-par ar (x-line kr 100 8000 30 do-nothing) 0) 0.1)
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;; compare:
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(let ((f (mul-add (sin-osc kr (mul-add (sin-osc kr 0.2 0) 8 10) 0) 400 800)))
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(mul (sin-osc ar f 0) 0.1))
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(mul (sin-osc ar (mul-add (sin-osc kr 0.2 0) 400 800) 0) 0.1)
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(mul (sin-osc ar 800 0) 0.1)
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(mul (sin-osc ar (x-line kr 100 8000 30 do-nothing) 0) 0.1)
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;; compare:
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(let ((f (mul-add (lf-tri kr (mul-add (lf-tri kr 0.2 0) 8 10) 0) 400 800)))
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(mul (lf-tri ar f 0) 0.1))
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(mul (lf-tri ar (mul-add (lf-tri kr 0.2 0) 400 800) 0) 0.1)
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(mul (lf-tri ar 800 0) 0.1)
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(mul (lf-tri ar (x-line kr 100 8000 30 do-nothing) 0) 0.1)
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