nnmnkwii.preprocessing.inv_mulaw

nnmnkwii.preprocessing.inv_mulaw(y, mu=256)

Inverse of mu-law companding (mu-law expansion)

$$f^{-1}(x) = sign(y) (1 / \mu) (1 + \mu)^{|y|} - 1)$$

Parameters

• y (array-like) – Compressed signal. Each value of input signal must be in range of [-1, 1].

• mu (number) – Compression parameter μ.

Returns

Uncomprresed signal (-1 <= x <= 1)

Return type

array-like

See also

nnmnkwii.preprocessing.inv_mulaw() nnmnkwii.preprocessing.mulaw_quantize() nnmnkwii.preprocessing.inv_mulaw_quantize()