spyrit.misc.walsh_hadamard.walsh_S

spyrit.misc.walsh_hadamard.walsh_S(x, S=None)

Return the Walsh S-transform of x

Args:

x (np.ndarray): n-by-1 signal. n+1 should be a power of two.

Returns:

np.ndarray: n-by-1 S-transformed signal

Examples:

Walsh-ordered S-transform of a 15-by-1 signal

>>> x = np.random.rand(15,1)
>>> s = walsh_S(x)