octave_bands

ketos.utils.octave_bands(band_min=-1, band_max=9)

Compute the min, central, and max frequency value of the specified octave bands, using the following formulas,

f_centre = 10^3 * 2^p , f_min = f_centre / sqrt(2) , f_max = f_centre * sqrt(2) ,

where p = band_number - 5

Args:

band_min: int

Lower octave band

band_max: int

Upper octave band

Returns:

fcentre: numpy array

Central frequency of each band (in Hz)

flow: numpy array

Minimum frequency of each band (in Hz)

fhigh: numpy array

Maximum frequency of each band (in Hz)

Example:

>>> from ketos.utils import octave_bands
>>> 
>>> fc, fmin, fmax = octave_bands(1, 3)
>>> print(fc)
[ 62.5 125.  250. ]