# Lecture Lens

> Lecture Lens is an AI-powered academic study workspace that synchronises lecture slides with real-time in-browser audio recording, slide-to-audio sync points, high-accuracy speech transcription, and per-slide rich text notes.

## Overview
Lecture Lens transforms live and recorded lectures into structured, searchable study materials. Students upload their course slide decks (PDF or PPTX), record or import audio directly in their browser, mark timestamps to link spoken explanations with individual slides, and generate comprehensive AI study summaries and revision flashcards.

## Core Capabilities
- **In-Browser Audio Recording**: High-fidelity, real-time audio recording utilising the Web Audio API with normalised 16kHz audio streaming.
- **Slide-to-Audio Synchronisation**: Click-to-sync timestamp markers that bind specific moments of the lecture recording directly to corresponding slides.
- **Speech-to-Text Transcription**: Automated, high-accuracy transcription powered by Whisper AI models, transcribing spoken lectures into searchable text.
- **Integrated Slide Workspace**: Dual-pane workspace displaying slides side-by-side with slide-specific rich text notes and full text extraction.
- **AI Study Packets**: Automated generation of lecture summaries, key concept breakdowns, LaTeX formula rendering (via KaTeX), and interactive practice quizzes.
- **Privacy & Security**: Built with strong GDPR compliance, double opt-in verification, end-to-end data portability, and user-exclusive cloud storage.

## Supported Formats
- **Slides**: PDF (.pdf), Microsoft PowerPoint (.pptx)
- **Audio**: Web Audio recording (WAV / WebM), MP3, M4A, WAV uploads

## Key URLs
- **Homepage & Early Access Waitlist**: https://lecturelens.io/
- **Privacy Policy**: https://lecturelens.io/privacy
- **Unsubscribe**: https://lecturelens.io/unsubscribe
- **Contact Support**: support@lecturelens.io