Textbook Audio Reader
Listen to textbooks the way a tutor would read them.
Aethel turns academic PDFs and EPUBs into studio-grade audio. Equations, tables, figures and dense theory are described in plain words before they are read — so you absorb complex material without staring at the page.
Try the textbook readerEquations read as ideas, not symbols
Formulas are detected, described in spoken language, and kept as their own excerpts so you can ask Explain, Repeat or Example on exactly that step.
Tables become prose summaries
Rows, columns and comparisons are narrated as clear statements. No more listening to a voice robotically read every cell.
Translate a chapter, not just a paragraph
Pick a language once per chapter. Technical terms stay accurate, and translated narration is cached so re-listening is free.
Dual-track narration for hard passages
The main narrator continues while an analytical voice briefly explains the densest idea, then hands back to the text.
Built for real academic formats
EPUB, PDF and plain text. Footnotes are flattened, page headers stripped, and chapters split so you can jump or resume anywhere.
Not another text-to-speech app
Generic TTS reads every line the same way. Aethel understands structure: it separates formulas from prose, drops page numbers and copyright pages, and uses AI to explain what the symbols mean. The result sounds like a patient tutor walking you through the book.