window#

class diffsptk.Window(in_length, out_length=None, norm='power', window='blackman')[source]#

See this page for details.

Parameters:

in_lengthint >= 1 [scalar]: Input length or window length, \(L_1\).
out_lengthint >= L1 [scalar]: Output length, \(L_2\). If \(L_2 > L_1\), output is zero-padded.
norm[‘none’, ‘power’, ‘magnitude’]: Normalization type of window.
window[‘blackman’, ‘hamming’, ‘hanning’, ‘bartlett’, ‘trapezoidal’, ‘rectangular’]: Window type.

forward(x)[source]#

Apply a window function to given waveform.

Parameters:

xTensor [shape=(…, L1)]: Framed waveform.

Returns:

yTensor [shape=(…, L2)]: Windowed waveform.

Examples

>>> x = torch.ones(5)
>>> window = diffsptk.Window(5, out_length=7, window="hamming", norm="none")
>>> y = window(x)
>>> y
tensor([0.0800, 0.5400, 1.0000, 0.5400, 0.0800, 0.0000, 0.0000])