preprocessor_config.json

{
  "feature_extractor_type": "MCTCTFeatureExtractor",
  "feature_size": 80,
  "frame_signal_scale": 32768.0,
  "hop_length": 10,
  "mel_floor": 1.0,
  "n_fft": 512,
  "n_freqs": 257,
  "normalize_means": true,
  "normalize_vars": true,
  "num_mel_bins": 80,
  "padding_side": "right",
  "padding_value": 0.0,
  "preemphasis_coeff": 0.97,
  "return_attention_mask": false,
  "sample_size": 400,
  "sample_stride": 160,
  "sampling_rate": 16000,
  "win_function": "hamming_window",
  "win_length": 25
}