espnet.transform.perturb.BandpassPerturbation

source

class espnet.transform.perturb.BandpassPerturbation(lower=0.0, upper=0.75, seed=None, axes=(-1,))

Bases: object

Randomly dropout along the frequency axis.

The original idea comes from the following: : “randomly-selected frequency band was cut off under the constraint of : leaving at least 1,000 Hz band within the range of less than 4,000Hz.” <br/> (The Hitachi/JHU CHiME-5 system: Advances in speech recognition for : everyday home environments using multiple microphone arrays; http://spandh.dcs.shef.ac.uk/chime_workshop/papers/CHiME_2018_paper_kanda.pdf)