Python idft示例

示例#1

文件： simple_signal.py 项目： maxssage/arrayfire-python

pos0 = af.randu(10) * 10
af.display(af.approx1(a, pos0))

a = af.randu(3, 3)
pos0 = af.randu(3, 3) * 10
pos1 = af.randu(3, 3) * 10

af.display(af.approx2(a, pos0, pos1))

a = af.randu(8, 1)
af.display(a)

af.display(af.fft(a))
af.display(af.dft(a))
af.display(af.real(af.ifft(af.fft(a))))
af.display(af.real(af.idft(af.dft(a))))

a = af.randu(4, 4)
af.display(a)

af.display(af.fft2(a))
af.display(af.dft(a))
af.display(af.real(af.ifft2(af.fft2(a))))
af.display(af.real(af.idft(af.dft(a))))

a = af.randu(4, 4, 2)
af.display(a)

af.display(af.fft3(a))
af.display(af.dft(a))
af.display(af.real(af.ifft3(af.fft3(a))))

示例#2

文件： signal.py 项目： syurkevi/arrayfire-python

def simple_signal(verbose=False):
    display_func = _util.display_func(verbose)
    print_func   = _util.print_func(verbose)

    a = af.randu(10, 1)
    pos0 = af.randu(10) * 10
    display_func(af.approx1(a, pos0))

    a = af.randu(3, 3)
    pos0 = af.randu(3, 3) * 10
    pos1 = af.randu(3, 3) * 10

    display_func(af.approx2(a, pos0, pos1))

    a = af.randu(8, 1)
    display_func(a)

    display_func(af.fft(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft(af.fft(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(4, 4)
    display_func(a)

    display_func(af.fft2(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft2(af.fft2(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(4, 4, 2)
    display_func(a)

    display_func(af.fft3(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft3(af.fft3(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(10, 1)
    b = af.randu(3, 1)
    display_func(af.convolve1(a, b))
    display_func(af.fft_convolve1(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5)
    b = af.randu(3, 3)
    display_func(af.convolve2(a, b))
    display_func(af.fft_convolve2(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5, 3)
    b = af.randu(3, 3, 2)
    display_func(af.convolve3(a, b))
    display_func(af.fft_convolve3(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))


    b = af.randu(3, 1)
    x = af.randu(10, 1)
    a = af.randu(2, 1)
    display_func(af.fir(b, x))
    display_func(af.iir(b, a, x))

示例#3

文件： signal.py 项目： syurkevi/arrayfire-python

def simple_signal(verbose=False):
    display_func = _util.display_func(verbose)
    print_func = _util.print_func(verbose)

    a = af.randu(10, 1)
    pos0 = af.randu(10) * 10
    display_func(af.approx1(a, pos0))

    a = af.randu(3, 3)
    pos0 = af.randu(3, 3) * 10
    pos1 = af.randu(3, 3) * 10

    display_func(af.approx2(a, pos0, pos1))

    a = af.randu(8, 1)
    display_func(a)

    display_func(af.fft(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft(af.fft(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(4, 4)
    display_func(a)

    display_func(af.fft2(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft2(af.fft2(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(4, 4, 2)
    display_func(a)

    display_func(af.fft3(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft3(af.fft3(a))))
    display_func(af.real(af.idft(af.dft(a))))

    a = af.randu(10, 1)
    b = af.randu(3, 1)
    display_func(af.convolve1(a, b))
    display_func(af.fft_convolve1(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5)
    b = af.randu(3, 3)
    display_func(af.convolve2(a, b))
    display_func(af.fft_convolve2(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5, 3)
    b = af.randu(3, 3, 2)
    display_func(af.convolve3(a, b))
    display_func(af.fft_convolve3(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    b = af.randu(3, 1)
    x = af.randu(10, 1)
    a = af.randu(2, 1)
    display_func(af.fir(b, x))
    display_func(af.iir(b, a, x))

示例#4

文件： simple_signal.py 项目： PierreBizouard/arrayfire-python

pos0 = af.randu(10) * 10
af.display(af.approx1(a, pos0))

a = af.randu(3, 3)
pos0 = af.randu(3, 3) * 10
pos1 = af.randu(3, 3) * 10

af.display(af.approx2(a, pos0, pos1))

a = af.randu(8, 1)
af.display(a)

af.display(af.fft(a))
af.display(af.dft(a))
af.display(af.real(af.ifft(af.fft(a))))
af.display(af.real(af.idft(af.dft(a))))

a = af.randu(4, 4)
af.display(a)

af.display(af.fft2(a))
af.display(af.dft(a))
af.display(af.real(af.ifft2(af.fft2(a))))
af.display(af.real(af.idft(af.dft(a))))

a = af.randu(4, 4, 2)
af.display(a)

af.display(af.fft3(a))
af.display(af.dft(a))
af.display(af.real(af.ifft3(af.fft3(a))))

示例#5

def simple_signal(verbose=False):
    display_func = _util.display_func(verbose)
    print_func   = _util.print_func(verbose)

    signal = af.randu(10)
    x_new  = af.randu(10)
    x_orig = af.randu(10)
    display_func(af.approx1(signal, x_new, xp = x_orig))

    signal = af.randu(3, 3)
    x_new  = af.randu(3, 3)
    x_orig = af.randu(3, 3)
    y_new  = af.randu(3, 3)
    y_orig = af.randu(3, 3)

    display_func(af.approx2(signal, x_new, y_new, xp = x_orig, yp = y_orig))

    a = af.randu(8, 1)
    display_func(a)

    display_func(af.fft(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft(af.fft(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft(a)
    af.ifft_inplace(b)
    display_func(b)
    af.fft_inplace(b)
    display_func(b)

    b = af.fft_r2c(a)
    c = af.fft_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(4, 4)
    display_func(a)

    display_func(af.fft2(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft2(af.fft2(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft2(a)
    af.ifft2_inplace(b)
    display_func(b)
    af.fft2_inplace(b)
    display_func(b)

    b = af.fft2_r2c(a)
    c = af.fft2_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(4, 4, 2)
    display_func(a)

    display_func(af.fft3(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft3(af.fft3(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft3(a)
    af.ifft3_inplace(b)
    display_func(b)
    af.fft3_inplace(b)
    display_func(b)

    b = af.fft3_r2c(a)
    c = af.fft3_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(10, 1)
    b = af.randu(3, 1)
    display_func(af.convolve1(a, b))
    display_func(af.fft_convolve1(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5)
    b = af.randu(3, 3)
    display_func(af.convolve2(a, b))
    display_func(af.fft_convolve2(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5, 3)
    b = af.randu(3, 3, 2)
    display_func(af.convolve3(a, b))
    display_func(af.fft_convolve3(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))


    b = af.randu(3, 1)
    x = af.randu(10, 1)
    a = af.randu(2, 1)
    display_func(af.fir(b, x))
    display_func(af.iir(b, a, x))

    display_func(af.medfilt1(a))
    display_func(af.medfilt2(a))
    display_func(af.medfilt(a))

示例#6

文件： signal.py 项目： roaffix/arrayfire-python

def simple_signal(verbose=False):
    display_func = _util.display_func(verbose)

    signal = af.randu(10)
    x_new = af.randu(10)
    x_orig = af.randu(10)
    display_func(af.approx1(signal, x_new, xp=x_orig))

    signal = af.randu(3, 3)
    x_new = af.randu(3, 3)
    x_orig = af.randu(3, 3)
    y_new = af.randu(3, 3)
    y_orig = af.randu(3, 3)

    display_func(af.approx2(signal, x_new, y_new, xp=x_orig, yp=y_orig))

    a = af.randu(8, 1)
    display_func(a)

    display_func(af.fft(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft(af.fft(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft(a)
    af.ifft_inplace(b)
    display_func(b)
    af.fft_inplace(b)
    display_func(b)

    b = af.fft_r2c(a)
    c = af.fft_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(4, 4)
    display_func(a)

    display_func(af.fft2(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft2(af.fft2(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft2(a)
    af.ifft2_inplace(b)
    display_func(b)
    af.fft2_inplace(b)
    display_func(b)

    b = af.fft2_r2c(a)
    c = af.fft2_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(4, 4, 2)
    display_func(a)

    display_func(af.fft3(a))
    display_func(af.dft(a))
    display_func(af.real(af.ifft3(af.fft3(a))))
    display_func(af.real(af.idft(af.dft(a))))

    b = af.fft3(a)
    af.ifft3_inplace(b)
    display_func(b)
    af.fft3_inplace(b)
    display_func(b)

    b = af.fft3_r2c(a)
    c = af.fft3_c2r(b)
    display_func(b)
    display_func(c)

    a = af.randu(10, 1)
    b = af.randu(3, 1)
    display_func(af.convolve1(a, b))
    display_func(af.fft_convolve1(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    a = af.randu(5, 5)
    b = af.randu(3, 3)
    display_func(af.convolve2(a, b))
    display_func(af.fft_convolve2(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    c = af.convolve2NN(a, b)
    display_func(c)
    in_dims = c.dims()
    incoming_grad = af.constant(1, in_dims[0], in_dims[1])
    g = af.convolve2GradientNN(incoming_grad, a, b, c)
    display_func(g)

    a = af.randu(5, 5, 3)
    b = af.randu(3, 3, 2)
    display_func(af.convolve3(a, b))
    display_func(af.fft_convolve3(a, b))
    display_func(af.convolve(a, b))
    display_func(af.fft_convolve(a, b))

    b = af.randu(3, 1)
    x = af.randu(10, 1)
    a = af.randu(2, 1)
    display_func(af.fir(b, x))
    display_func(af.iir(b, a, x))

    display_func(af.medfilt1(a))
    display_func(af.medfilt2(a))
    display_func(af.medfilt(a))