code: def transform_audio(self, y):
          '''Compute the Mel spectrogram
  
          Parameters
          ----------
          y : np.ndarray
              The audio buffer
  
          Returns
          -------
          data : dict
              data['mag'] : np.ndarray, shape=(n_frames, n_mels)
                  The Mel spectrogram
          '''
          n_frames = self.n_frames(get_duration(y=y, sr=self.sr))
  
          mel = np.sqrt(melspectrogram(y=y, sr=self.sr,
                                       n_fft=self.n_fft,
                                       hop_length=self.hop_length,
                                       n_mels=self.n_mels,
                                       fmax=self.fmax)).astype(np.float32)
  
          mel = fix_length(mel, n_frames)
  
          if self.log:
              mel = amplitude_to_db(mel, ref=np.max)
  
          return {'mag': mel.T[self.idx]f transform_audio(self, y):
          '''Compute the Mel spectrogram
  
          Parameters
          ----------
          y : np.ndarray
              The audio buffer
  
          Returns
          -------
          data : dict
              data['mag'] : np.ndarray, shape=(n_frames, n_mels)
                  The Mel spectrogram
          '''
          n_frames = self.n_frames(get_duration(y=y, sr=self.sr))
  
          mel = np.sqrt(melspectrogram(y=y, sr=self.sr,
                                       n_fft=self.n_fft,
                                       hop_length=self.hop_length,
                                       n_mels=self.n_mels,
                                       fmax=self.fmax)).astype(np.float32)
  
          mel = fix_length(mel, n_frames)
  
          if self.log:
              mel = amplitude_to_db(mel, ref=np.max)
  
          return {'mag': mel.T[self.idx]}
docs: Compute the Mel spectrogram
  
          Parameters
          ----------
          y : np.ndarray
              The audio buffer
  
          Returns
          -------
          data : dict
              data['mag'] : np.ndarray, shape=(n_frames, n_mels)
                  The Mel spectrogram