code: def dequantize(x, bits):
      return 2 * x / (2**bits - 1) - 1
  
imports: import librosa
  import soundfile
  import numpy
  import scipy.io.wavfile
  import scipy.signal
  from TTS.tts.utils.data import StandardScaler
label_desc: Use image node_id 32 for calling the AudioProcessor obj's underlying member method code with example usage: obj.dequantize(x, bits) and returns: unknown