14 lines
535 B
Scheme
14 lines
535 B
Scheme
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; pack-fft
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(let* ((n 100)
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(n* (enumFromTo 1 n))
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(m1 (map (lambda (_) (range (f-sin-osc (exp-rand 0.1 1) 0) 0 1)) n*))
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(square (lambda (a) (* a a)))
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(m2 (map mul m1 (map square (take 100 (enumFromThenTo 1 (- 1 (/ 1 n)) 0)))))
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(i (map (lambda (_) (lf-pulse (pow 2 (i-rand -3 5)) 0 0.3)) n*))
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(m3 (map mul m2 i))
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(p (replicate n 0.0))
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(c1 (fft* (local-buf 1 512) (f-sin-osc 440 0)))
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(c2 (pack-fft c1 512 0 (- n 1) 1 (packfft-data m3 p)))
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(s (ifft* c2)))
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(mce2 s s))
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