code: def amp_to_db(x):
      return 20 * np.log10(np.maximum(1e-5, x))
  
file_path: PaddleHub/modules/audio/svs/diffsinger/utils/audio.py
imports: import subprocess
  import matplotlib
  import librosa
  import librosa.filters
  import numpy
  from scipy import signal
  from scipy.io import wavfile
label_desc: Use image node_id 6 for calling a global function with example usage: amp_to_db(x) and returns: unknown