Mark Backman ac0643f82f feat: add WakePhraseUserFrameFilter for aggregator-level wake phrase gating ...

Add a new user frame filter concept that runs inside the aggregator,
before VAD processing. This blocks transcriptions, VAD events, and
interruptions until a wake phrase is detected, solving ordering
conflicts that prevented wake phrase detection from working as a
user turn start strategy.

- Add BaseUserFrameFilter base class and WakePhraseUserFrameFilter
  with LISTENING/INACTIVE state machine, timeout, and single_activation
- Add user_frame_filters param to LLMUserAggregatorParams with
  _maybe_filter_frame() running after mute check, before VAD
- Deprecate WakeCheckFilter in favor of the new filter
- Update 10-wake-phrase.py example

2026-03-18 10:20:22 -04:00

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