alaw

class diffsptk.ALawCompression(abs_max=1, a=87.6)

See this page for details.

Parameters:

abs_maxfloat > 0 [scalar]

Absolute maximum value of input.

afloat >= 1 [scalar]

Compression factor, \(A\).

forward(x)

Compress waveform by A-law algorithm.

Parameters:

xTensor [shape=(…,)]

Waveform.

Returns:

yTensor [shape=(…,)]

Compressed waveform.

Examples

>>> x = diffsptk.ramp(4)
>>> alaw = diffsptk.ALawCompression(4)
>>> y = alaw(x)
>>> y
tensor([0.0000, 2.9868, 3.4934, 3.7897, 4.0000])

See also

ialaw ulaw