phase

class diffsptk.Phase(fft_length: int, unwrap: bool = False)

See this page for details.

Parameters:

fft_lengthint >= 2

The number of FFT bins, \(L\).

unwrapbool

If True, perform the phase unwrapping.

forward(b: Tensor | None = None, a: Tensor | None = None) → Tensor

Compute phase spectrum.

Parameters:

bTensor [shape=(…, M+1)] or None

The numerator coefficients.

aTensor [shape=(…, N+1)] or None

The denominator coefficients.

Returns:

outTensor [shape=(…, L/2+1)]

The phase spectrum [\(\pi\) rad].

Examples

>>> x = diffsptk.ramp(3)
>>> phase = diffsptk.Phase(8)
>>> p = phase(x)
>>> p
tensor([ 0.0000, -0.5907,  0.7500, -0.1687,  1.0000])

diffsptk.functional.phase(b: Tensor | None = None, a: Tensor | None = None, *, fft_length: int = 512, unwrap: bool = False) → Tensor

Compute phase spectrum.

Parameters:

bTensor [shape=(…, M+1)] or None

The numerator coefficients.

aTensor [shape=(…, N+1)] or None

The denominator coefficients.

fft_lengthint >= 2

The number of FFT bins, \(L\).

unwrapbool

If True, perform the phase unwrapping.

Returns:

outTensor [shape=(…, L/2+1)]

The phase spectrum [\(\pi\) rad].

See also

spec grpdelay