Speech Information Rate Analyzer

A Chrome extension that provides real-time analysis of speech information rate (bits per second) using linguistic entropy calculations.

Features

• Real-time Speech Analysis: Live transcription and analysis of spoken words
• Information Rate Calculation: Measures bits per second based on linguistic entropy
• Word Frequency Analysis: Uses large corpus data for accurate probability calculations
• Beautiful UI: Modern, responsive interface with live statistics
• Privacy-First: All processing happens locally in your browser

How It Works

The extension uses the Web Speech API to transcribe speech in real-time, then calculates:

1. Entropy per Word: Based on word frequency in large text corpora
2. Speaking Rate: Words per second
3. Information Rate: Entropy × Speaking Rate (bits/second)

Installation

From Chrome Web Store

1. Visit the Chrome Web Store (link coming soon)
2. Click "Add to Chrome"
3. Grant microphone permissions when prompted

Manual Installation (Development)

1. Download or clone this repository
2. Open Chrome and go to chrome://extensions/
3. Enable "Developer mode" in the top right
4. Click "Load unpacked" and select the extension folder
5. The extension will appear in your toolbar

Usage

1. Click the extension icon in your Chrome toolbar
2. Click "Start Recording" to begin speech analysis
3. Speak naturally - the extension will show:
   • Live transcription
   • Duration of recording
   • Word count
   • Average entropy per word
   • Information rate (bits/second)
4. Click "Stop Recording" to finish and see final results

Technical Details

• Uses Web Speech API for speech recognition
• Calculates word-level entropy using frequency data from:
  • Norvig's word frequency corpus
  • Google's 10,000 most common English words
• Information theory calculations based on Shannon entropy
• All processing happens locally for privacy

Privacy

• No data is sent to external servers
• Speech processing uses browser's built-in Web Speech API
• Corpus data is loaded from public sources
• No personal information is stored or transmitted

Browser Compatibility

• Chrome 25+ (recommended: Chrome 80+)
• Requires microphone access
• Works on all platforms (Windows, macOS, Linux)

Development

Built with:

• Vanilla JavaScript
• Chrome Extension Manifest V3
• Web Speech API
• Modern CSS with animations

License

MIT License - see LICENSE file for details

Contributing

Contributions welcome! Please feel free to submit issues and pull requests.

Support

For issues or questions, please create an issue on GitHub.