feat(stt): add NVIDIA Canary STT engine support #360
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Add support for NVIDIA's Canary speech-to-text models via NeMo toolkit: - Canary 1B v2: 4.89% WER, 630x RTF (5x faster than Whisper) - Canary Qwen 2.5B: Higher accuracy variant for demanding use cases Both models use NeMo's EncDecMultiTaskModel architecture with automatic model download via HuggingFace. Supports GPU acceleration (CUDA/ROCm), translation (s2t_translation), and punctuation restoration. New files: - src/canary_engine.hpp: Engine class definition - src/canary_engine.cpp: NeMo Python integration via py_executor Modified: - models_manager.h/cpp: Add stt_canary engine type and feature flags - speech_service.cpp: Engine instantiation and type checking - CMakeLists.txt: Add canary_engine source files - config/models.json: Add both Canary model entries Requires: pip install nemo_toolkit[asr]
Check for nemo.collections.asr module availability at startup. This enables dsnote to automatically detect if NeMo is installed and show/hide Canary models accordingly in the UI. - py_tools.hpp: Add nemo_asr to libs_availability_t - py_tools.cpp: Add nemo.collections.asr import check - speech_service.cpp: Map nemo_asr availability to stt_canary
- Update CMakeLists.txt to use Qt6 instead of Qt5 - Update cmake/*.cmake files for Qt6 compatibility - Replace deprecated Qt5 APIs with Qt6 equivalents: - QRegExp -> QRegularExpression - QX11Info -> QNativeInterface::QX11Application - QMediaPlayer::State -> QMediaPlayer::PlaybackState - QMediaPlayer::stateChanged -> playbackStateChanged - setMedia(QMediaContent) -> setSource(QUrl) - QAudioInput (recording) -> QAudioSource - QAudioDeviceInfo -> QAudioDevice + QMediaDevices - QAudioFormat::setSampleSize/setCodec -> setSampleFormat - QNetworkRequest::FollowRedirectsAttribute -> RedirectPolicyAttribute - Remove Qt::AA_EnableHighDpiScaling (default in Qt6) - Remove QTextCodec usage - Remove QQuickStyle::availableStyles() (not in Qt6) - Fix GCC 15 type strictness (std::clamp/max int vs qsizetype) - Update qhotkey external project to build with Qt6
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Summary
Add support for NVIDIA's Canary speech-to-text models via NeMo toolkit.
Models Added
multilang_canary_1b_v2multilang_canary_qwenFeatures
fasterwhisper_enginepatternsFiles Changed
src/canary_engine.hpp,src/canary_engine.cppmodels_manager.h/cpp,speech_service.cpp,CMakeLists.txt,config/models.jsonRequirements
Why Canary?
Per the Open ASR Leaderboard:
Testing