pipecat/changelog/4249.added.md

• Added cross-sentence stitching support to NvidiaTTSService. Multiple sentences within an LLM turn are fed into a single SynthesizeOnline gRPC stream, enabling Magpie's seamless audio across sentence boundaries (requires Magpie TTS model v1.7.0+).
• Added new parameters to NvidiaTTSService:
  • custom_dictionary for IPA-based custom pronunciation
  • encoding for output audio encoding format
  • zero_shot_audio_prompt_file for zero-shot voice cloning with file caching
  • audio_prompt_encoding for zero-shot audio prompt format
• Added can_generate_metrics returning True for NvidiaTTSService.
• Added stop_all_metrics() call on audio context interruption.
• Added gRPC error handling for synthesis config retrieval.