from_decibel

ketos.audio.utils.misc.from_decibel(y)[source]

Convert any data array, $y$ , typically a spectrogram, from decibel scale

to linear scale by applying the operation $10^{y/20}$ .

Args:

ynumpy array: Input array

Returns:

xnumpy array: Converted array

Example:

>>> import numpy as np
>>> from ketos.audio.utils.misc import from_decibel 
>>> img = np.array([[10., 20.],[30., 40.]])
>>> img_db = from_decibel(img)
>>> img_db = np.around(img_db, decimals=2) # only keep up to two decimals
>>> print(img_db)
[[  3.16  10.  ]
 [ 31.62 100.  ]]