to_decibel

ketos.audio.utils.misc.to_decibel(x)[source]

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

to decibel scale by applying the operation $20\log_{10}(y)$ .

Args:

xnumpy array: Input array

Returns:

ynumpy array: Converted array

Example:

>>> import numpy as np
>>> from ketos.audio.utils.misc import to_decibel 
>>> img = np.array([[10., 20.],[30., 40.]])
>>> img_db = to_decibel(img)
>>> img_db = np.around(img_db, decimals=2) # only keep up to two decimals
>>> print(img_db)
[[20.0 26.02]
 [29.54 32.04]]