jax.scipy.fft.dct#
- jax.scipy.fft.dct(x, type=2, n=None, axis=-1, norm=None)[source]#
Return the Discrete Cosine Transform of arbitrary type sequence x.
LAX-backend implementation of
scipy.fft._realtransforms.dct()
.Original docstring below.
- Parameters:
x (array_like) – The input array.
type ({1, 2, 3, 4}, optional) – Type of the DCT (see Notes). Default type is 2.
n (int, optional) – Length of the transform. If
n < x.shape[axis]
, x is truncated. Ifn > x.shape[axis]
, x is zero-padded. The default results inn = x.shape[axis]
.axis (int, optional) – Axis along which the dct is computed; the default is over the last axis (i.e.,
axis=-1
).norm ({"backward", "ortho", "forward"}, optional) – Normalization mode (see Notes). Default is “backward”.
- Returns:
y – The transformed input array.
- Return type:
ndarray of real
References