class_docstr: Bark frequency scale.
  
  Has wider bandwidths at lower frequencies, see:
  Critical bandwidth: BARK
  Zwicker and Terhardt, 1980
class_docstr_tok: ["Bark","frequency","scale",".","Has","wider","bandwidths","at","lower","frequencies",",","see",":","Critical","bandwidth",":","BARK","Zwicker","and","Terhardt",",","1980"]
docstr: Convert Hz to Bark.
docstr_tok: ["Convert","Hz","to","Bark","."]
code: def convert(f):
      """Convert Hz to Bark."""
      b = torch.div(f, 1000.0)
      b = torch.pow(b, 2.0) * 1.4
      b = torch.pow(b + 1.0, 0.69)
      return b * 75.0 + 25.0
  
imports: import math
  from typing import Union
  import torch
  from typeguard import check_argument_types
label_desc: Use image node_id 1 for calling the BarkScale obj's underlying member method code with example usage: obj.convert(f) and returns: unknown