code: def calculate_rms(samples):
      """Given a numpy array of audio samples, return its Root Mean Square (RMS)."""
      return np.sqrt(np.mean(np.square(samples)))
  
file_path: audiomentations/audiomentations/core/utils.py
imports: import os
  from functools import lru_cache
  from pathlib import Path
  from typing import List, Union, Tuple
  import math
  import numpy
  from numpy.typing import NDArray
label_desc: Use image node_id 3 for calling a global function with example usage: calculate_rms(samples) and returns: np