mel_config.json

{
  "sample_rate": 16000,
  "n_fft": 1024,
  "win_length": 640,
  "hop_length": 320,
  "mel_fmin": 10.0,
  "mel_fmax": null,
  "num_mels": 128,
  "norm": "slaney",
  "mel_scale": "slaney"
}