tf.spectral.rfft

tf.spectral.rfft

tf.spectral.rfft

rfft(
    input_tensor,
    fft_length=None,
    name=None
)

Defined in tensorflow/python/ops/spectral_ops.py.

See the guide: Spectral Functions > Fourier Transform Functions

Real-valued fast Fourier transform.

Computes the 1-dimensional discrete Fourier transform of a real-valued signal over the inner-most dimension of input.

Since the DFT of a real signal is Hermitian-symmetric, RFFT only returns the fft_length / 2 + 1 unique components of the FFT: the zero-frequency term, followed by the fft_length / 2 positive-frequency terms.

Args:

• input: A Tensor of type float32. A float32 tensor.
• fft_length: A Tensor of type int32. An int32 tensor of shape [1]. The FFT length.
• name: A name for the operation (optional).

Returns:

A Tensor of type complex64. A complex64 tensor of the same rank as input. The inner-most dimension of input is replaced with the fft_length / 2 + 1 unique frequency components of its 1D Fourier transform.

numpy compatibility

Equivalent to np.fft.rfft