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The BookNPC Blog
Notes on listening to your own books, casting and narration, and what we're building.
BookNPC 2.0: 300+ cloud voices, a free library, and a new look
BookNPC 2.0 adds more than 300 premium cloud voices in 10 languages, a free library of narrated classics, and a redesign of every screen. Here is what changed and what it costs.
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Per character, per month, or per hour: how AI narration is priced
AI voices are sold three ways: per million characters, as a monthly character allowance, or by the finished hour. Here is what a whole novel costs under each model, and why the differences are so large.
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The ways to listen to a book, honestly compared
Subscription catalogs, free volunteer recordings, one-voice readers, or casting your own. Four ways to turn a book into audio, what each does best, where each falls short, and how to pick.
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How to listen to a book in a language you're learning
Hearing a book in the language you are studying is one of the best ways to improve. Here is how to turn any ebook into audio in another language, why it helps, and where the limits are.
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Why AI narration finally sounds human (and where it still slips)
Synthetic voices went from robotic to genuinely pleasant in a few years. Here is what changed under the hood, what still trips them up, and how to get the most natural read of a book.
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On-device vs cloud narration: which to use, and when
On-device text-to-speech is instant, free, private, and works offline. Cloud narration sounds far richer but costs a little. Here is what actually differs, and how to choose per book.
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How does an app know who's speaking? Inside automatic full-cast narration
Giving every character in a novel their own voice means first solving a surprisingly hard problem: working out who says each line. Here is how speaker attribution actually works.
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Full-cast audiobooks vs a single narrator: what actually changes
A single narrator voices every character; a full cast gives each one their own voice. Here is what that does to how a book sounds, why full casts have always been rare, and when it matters.
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Reading EPUB, MOBI, AZW, and other ebook files aloud
A plain guide to the common ebook formats, where each comes from, the DRM catch nobody explains, and how to get any of them read aloud without converting a thing first.
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How to turn the ebooks you own into audiobooks (a practical guide)
Most books never get an audiobook edition, and the ones that do sit behind a subscription. Here is how to turn any ebook you own into one you can listen to, and make it sound good.
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Where to find free classic audiobooks worth listening to
The classics are free to read and, increasingly, free to hear. Here is where to find good copies, how the free audio options compare, and a starter list of titles worth your time.
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The real cost of audiobooks: a year of subscription vs paying per book
Subscription audiobook apps charge every month for access you never keep. Here is the actual math over a year, honest scenarios for light and heavy listeners, and when each model wins.
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