ulab.numpy.fft – Frequency-domain functions

ulab.numpy.fft.fft(r: ulab.numpy.ndarray, c: ulab.numpy.ndarray | None = None) → Tuple[ulab.numpy.ndarray, ulab.numpy.ndarray]
Paramètres:

  • r (ulab.numpy.ndarray) – A 1-dimension array of values whose size is a power of 2

  • c (ulab.numpy.ndarray) – An optional 1-dimension array of values whose size is a power of 2, giving the complex part of the value

Return tuple (r, c):

The real and complex parts of the FFT

Perform a Fast Fourier Transform from the time domain into the frequency domain

See also ~ulab.extras.spectrum, which computes the magnitude of the fft, rather than separately returning its real and imaginary parts.

ulab.numpy.fft.ifft(r: ulab.numpy.ndarray, c: ulab.numpy.ndarray | None = None) → Tuple[ulab.numpy.ndarray, ulab.numpy.ndarray]
Paramètres:

  • r (ulab.numpy.ndarray) – A 1-dimension array of values whose size is a power of 2

  • c (ulab.numpy.ndarray) – An optional 1-dimension array of values whose size is a power of 2, giving the complex part of the value

Return tuple (r, c):

The real and complex parts of the inverse FFT

Perform an Inverse Fast Fourier Transform from the frequeny domain into the time domain