ARIA v2

中文說明 / Chinese version

ARIA is a Windows desktop app for turning system audio into live subtitles. It can listen to audio from video players, browsers, games, and calls, then show the recognised text in a movable overlay. Translation can be shown in a separate overlay when needed.

ARIA main window

Downloads

Build	Size	Includes	Requirements	Download
Lite	~600 MB	Windows Live Captions mode and translation overlay	Windows 11, version 22H2 or later	Google Drive · Baidu
Full	~7.6 GB	Precise, Realtime, and Live Captions modes; offline models	Windows 10 or 11; NVIDIA GPU recommended for Precise mode	Google Drive · Baidu

Choose Lite if Windows Live Captions covers your use case. Choose Full when you need local speech recognition, offline models, or more control over recognition settings.

Getting started

Download and extract the package.
Start ARIA.bat in the Full package, or run_lite.bat in the Lite package.
Select a recognition mode in the Full package, configure translation if required, then select Start.

The package includes its own Python runtime, so a separate Python installation is not required.

Recognition modes

Mode	Engine	Good fit	Notes
Precise	Faster-Whisper	Recorded video, talks, and other accuracy-sensitive audio	Works best with an NVIDIA GPU.
Realtime	Sherpa-ONNX / Vosk	Conversations and streams where fast updates matter	Supports Chinese/English with Sherpa-ONNX and Japanese with Vosk.
Live Captions	Windows 11 Live Captions	Everyday playback, meetings, and systems without CUDA	Uses the Windows feature; no NVIDIA GPU or CUDA setup is needed.

The Full package can capture Windows system audio or a microphone. Lite is intentionally limited to Live Captions mode.

Translation overlay

ARIA can send recognised text to Google Translate, Bing Translator, Youdao, or the local NLLB model included with the Full package. The original captions stay in the source overlay while the translated text is shown separately.

Example of ARIA's translation overlay

Online translation services are convenient, but they can be rate-limited or change without notice. Use the local NLLB model when offline operation and predictable availability are more important.

Languages

Language	Precise	Realtime	Live Captions
Chinese	✓	✓	✓
English	✓	✓	✓
Japanese	✓	✓	✓
Korean	✓	—	✓
Spanish, French, and more	✓	—	✓

Live Captions language availability is determined by the Windows feature. Precise mode supports the broadest set of languages.

Included models in the Full package

Model	Purpose	Approx. size	Languages
Whisper Large-v3	Precise transcription	3 GB	Multilingual
Sherpa-ONNX bilingual	Realtime transcription	500 MB	Chinese, English
Vosk Japanese	Realtime transcription	1 GB	Japanese
NLLB	Local translation	1.2 GB	Multilingual

Logs and settings

Settings are saved between runs. The application can write a detailed session log and a smaller transcript-only log, and the log timezone can be selected from the settings window. The subtitle and translation overlays can be moved and resized independently.

Project layout

ARIA-v2/
├── python/          # Embedded Python runtime for the Full package
├── src/             # Full-package application source
├── models/          # Offline models for the Full package
├── ARIA.bat         # Full-package launcher
└── ARIA-v2-lite/
    ├── python/      # Embedded Python runtime for Lite
    ├── src/         # Lite application source
    └── run_lite.bat # Lite-package launcher

Aria

项目介绍