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Real-time Interpreter - 实时同声传译

Free online real-time speech translation tool. Speak into your microphone and get instant bilingual subtitles with AI-powered accuracy. No installation, no sign-up, completely free.

Features

  • Real-time Speech Recognition - Powered by Google Web Speech API and Sherpa-ONNX offline engine. Transcribes your speech word-by-word as you speak.
  • AI-Powered Translation - Dual-phase translation: instant Google Translate results followed by AI-refined translation using Llama 3.3 70B for superior accuracy.
  • 8 Languages Supported - English, Chinese (Simplified), Japanese, Korean, French, German, Spanish, and Russian.
  • Auto Language Detection - Automatically detects whether you're speaking Chinese or English and translates accordingly.
  • Progressive Translation - See translation results every 5 words, even before you finish your sentence.
  • Offline Capable - Sherpa-ONNX WASM engine works without internet connection for speech recognition.
  • Works Everywhere - Desktop Chrome, mobile browsers, tablets. No app download needed.

How to Use

  1. Open this page in your browser (Chrome recommended for best accuracy)
  2. Allow microphone access when prompted by your browser
  3. Select your source language (the language you speak) and target language (the language you want to translate to)
  4. Start speaking naturally - your words will appear as subtitles with translations in real-time
  5. Blue text shows Google Translate results (instant). Green text shows AI-refined translations (more accurate).

Use Cases

  • International Meetings - Display live bilingual subtitles during video calls or in-person meetings
  • Language Learning - Practice speaking and see instant translations to check your understanding
  • Travel - Communicate with locals by speaking your language and showing the translation on your phone
  • Lectures & Presentations - Provide real-time subtitles for multilingual audiences
  • Accessibility - Help hearing-impaired individuals follow spoken conversations through text

Frequently Asked Questions

Is this tool free?

Yes, completely free. No sign-up, no credit card, no usage limits for speech recognition. Translation uses free API tiers.

Which browsers are supported?

Google Chrome provides the best experience with Google's online speech recognition. Firefox, Safari, and other browsers use the offline Sherpa-ONNX engine.

Does it work on mobile phones?

Yes. On mobile devices, the app uses the Sherpa-ONNX offline speech recognition engine which runs entirely in your browser.

Is my speech data private?

Speech recognition in Chrome uses Google's servers. When using Sherpa-ONNX (offline mode), all processing happens locally in your browser - no audio data leaves your device.

How accurate is the translation?

The app uses a dual-phase approach: Google Translate provides instant results, then AI (Llama 3.3 70B) refines the translation using conversation context for better accuracy.