code: def _hz_to_erb(hz):
      """
      Utility for converting from frequency (Hz) to the
      Equivalent Rectangular Bandwidth (ERB) scale
      ERB = frequency / EarQ + minBW
      """
      EarQ = 9.26449
      minBW = 24.7
      return hz / EarQ + minBW
  
imports: import operator
  from math import pi
  import warnings
  import cupy
  from cupy.polynomial.polynomial import polyval, polyvalfromroots
  import cupyx.scipy.fft
  from cupyx import jit
  from cupyx.scipy._lib._util import float_factorial
  from cupyx.scipy.signal._polyutils import roots
label_desc: Use image node_id 11 for calling a global function with example usage: _hz_to_erb(hz) and returns: unknown