idht

diffsptk.IDHT

alias of InverseDiscreteHartleyTransform

class diffsptk.InverseDiscreteHartleyTransform(dht_length, dht_type=2)

This is the opposite module to DiscreteHartleyTransform().

Parameters:

dht_lengthint >= 1

DHT length, \(L\).

dht_typeint in [1, 4]

DHT type.

forward(y)

Apply inverse DHT to input.

Parameters:

yTensor [shape=(…, L)]

Input.

Returns:

outTensor [shape=(…, L)]

Inverse DHT output.

Examples

>>> x = diffsptk.ramp(3)
>>> dht = diffsptk.DHT(4)
>>> idht = diffsptk.IDHT(4)
>>> x2 = idht(dht(x))
>>> x2
tensor([5.9605e-08, 1.0000e+00, 2.0000e+00, 3.0000e+00])

diffsptk.functional.idht(y, dht_type=2)

Compute inverse DHT.

Parameters:

yTensor [shape=(…, L)]

Input.

dht_typeint in [1, 4]

DHT type.

Returns:

outTensor [shape=(…, L)]

Inverse DHT output.

See also

dht