code: def _stft(y, hparams):
      return librosa.stft(
          y=y,
          n_fft=hparams["fft_size"],
          hop_length=get_hop_size(hparams),
          win_length=hparams["win_size"],
          pad_mode="constant",
      )
  
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 3 for calling a global function with example usage: _stft(y, hparams) and returns: librosa