{
  "feature_extractor_type": "Wav2Vec2FeatureExtractor",
  "feature_size": 1,
  "sampling_rate": 16000,
  "padding_value": 0.0,
  "return_attention_mask": true,
  "feature_extraction": {
    "mel_filters": 128,
    "window_size_ms": 25,
    "stride_ms": 10,
    "normalize_means": true,
    "normalize_vars": true,
    "deltas_order": 2,
    "cmvn_window": 300
  },
  "signal_enhancement": {
    "vad_enabled": true,
    "vad_threshold": 0.5,
    "noise_reduction": "spectral_gating",
    "stationary_threshold": 1.5
  }
}