silero_vad.onnx
  Source: pipecat-ai (pipecat.audio.vad.data), originally Silero VAD.
  License: MIT.

smart-turn-v3.2-cpu.onnx
  Source: pipecat-ai (pipecat.audio.turn.smart_turn.data), Daily Smart Turn v3.
  License: BSD 2-Clause.

whisper_features.py
  Source: pipecat-ai _whisper_features.py (BSD 2-Clause).
  Feature math mirrors HuggingFace transformers WhisperFeatureExtractor (Apache-2.0).
