preprocessor_config.json

{
  "feature_extractor_type": "FastConformerFeatureExtractor",
  "feature_size": 128,
  "sampling_rate": 16000,
  "hop_length": 160,
  "win_length": 400,
  "n_fft": 512,
  "n_mels": 128,
  "f_min": 0,
  "f_max": 8000,
  "normalize": "per_feature",
  "mel_scale": "htk",
  "return_attention_mask": true,
  "padding_value": 0.0
}