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| Numeric.Transform.Fourier.FFT | | Portability | portable | | Stability | experimental | | Maintainer | m.p.donadio@ieee.org |
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| Description |
| FFT driver functions
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| Synopsis |
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| fft :: (Ix a, Integral a, RealFloat b) => Array a (Complex b) -> Array a (Complex b) | | | ifft :: (Ix a, Integral a, RealFloat b) => Array a (Complex b) -> Array a (Complex b) | | | rfft :: (Ix a, Integral a, RealFloat b) => Array a b -> Array a (Complex b) | | | irfft :: (Ix a, Integral a, RealFloat b) => Array a (Complex b) -> Array a b | | | r2fft :: (Ix a, Integral a, RealFloat b) => Array a b -> Array a b -> (Array a (Complex b), Array a (Complex b)) |
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| Documentation |
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| fft |
| :: (Ix a, Integral a, RealFloat b) | | | => Array a (Complex b) | x[n] | | -> Array a (Complex b) | X[k] | | This is the driver routine for calculating FFT's. All of the
recursion in the various algorithms are defined in terms of fft. |
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| ifft |
| :: (Ix a, Integral a, RealFloat b) | | | => Array a (Complex b) | X[k] | | -> Array a (Complex b) | x[n] | | Inverse FFT, including scaling factor, defined in terms of fft |
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| rfft |
| :: (Ix a, Integral a, RealFloat b) | | | => Array a b | x[n] | | -> Array a (Complex b) | X[k] | | This is the algorithm for computing 2N-point real FFT with an N-point
complex FFT, defined in terms of fft |
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| irfft |
| :: (Ix a, Integral a, RealFloat b) | | | => Array a (Complex b) | X[k] | | -> Array a b | x[n] | | This is the algorithm for computing a 2N-point real inverse FFT with an
N-point complex FFT, defined in terms of ifft |
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| r2fft |
| :: (Ix a, Integral a, RealFloat b) | | | => Array a b | x1[n] | | -> Array a b | x2[n] | | -> (Array a (Complex b), Array a (Complex b)) | (X1[k],X2[k]) | | Algorithm for 2 N-point real FFT's computed with N-point complex
FFT, defined in terms of fft |
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| Produced by Haddock version 0.4 |
