code: def rms_norm(
      *, wav: np.ndarray = None, db_level: float = -27.0, **kwargs
  ) -> np.ndarray:
      r = 10 ** (db_level / 20)
      a = np.sqrt((len(wav) * (r**2)) / np.sum(wav**2))
      return wav * a
  
imports: from io import BytesIO
  from typing import Tuple
  import librosa
  import numpy
  import scipy
  import soundfile
  from librosa import magphase, pyin
label_desc: Use image node_id 24 for calling a global function with example usage: rms_norm() and returns: unknown