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• Repository: NVIDIA/din-deploy
• Branch: nemotron-diarization
• File: .coderabbit.yaml
• Commit: b43f0e1
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• Run ID: 7dbd6115-ff12-4e36-805a-296676be6396

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• CMakeLists.txt

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📝 Summary

Summary by CodeRabbit

• New Features
  • Added speaker diarization for 16 kHz audio, with speaker segments and tools to associate speakers with transcript word timestamps.
  • Added command-line support for running diarization with optional transcription and forced alignment.
  • Added options for model precision and execution provider, plus tools to export and validate diarization models.
• Documentation
  • Added guidance for using, configuring, and validating diarization, including model licensing information.

Adds Nemotron diarization model export and validation tools, a C++ pipeline and CLI, and CMake integration. The CLI can combine diarization with Qwen3 transcription and forced alignment.

Changes: Nemotron diarization

Layer / File(s)	Summary
ONNX export and validation asr/diarization/model_export/*, asr/diarization/README.md, THIRD_PARTY_NOTICES.md	Adds log-mel processing and streaming model export, checkpoint-to-ONNX export, and validation against NeMo and native outputs. Documents export, validation, model behavior, and licensing.
C++ diarization runtime asr/diarization/diarization.h, asr/diarization/diarization.cpp, asr/diarization/CMakeLists.txt, CMakeLists.txt, asr/diarization/README.md	Adds the Config, Segment, Result, and Pipeline APIs. The pipeline runs chunked inference, produces speaker segments, and supports speaker lookup by interval. Adds the library to the CMake build.
CLI and ASR alignment asr/diarization/main.cpp, asr/diarization/CMakeLists.txt, asr/diarization/README.md	Adds a CLI for diarization with optional Qwen3 transcription and forced alignment. Aligned word timestamps include the speaker returned by Result::SpeakerAt.

Priority: Normal

Estimated code review effort: 4 (Complex) | ~60 minutes

Merge Risk: Minimal · previous review b43f0

This change adds the diarization library to the build using the same declaration pattern the existing Whisper and Qwen3 libraries already use. Configuration is not expected to break, and no blocking issue remains in the reviewed change.

Pre-merge checks: 3 · 1

Failed checks: 1 inconclusive

Check name	Status	Explanation	Resolution
Description check		No pull request description was provided, so the change context is not documented in the description.	Add a brief description that summarizes the Nemotron-3 diarization pipeline, CLI, model export and validation tooling, and integration changes.

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title clearly and concisely identifies the main change: adding Nemotron-3 diarization support.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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