Supertonic: Free On Device Text to Speech

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This open source GitHub project turns written text into spoken audio right on your own device. It runs without sending your words to a cloud service. You are building an app that reads text out loud. You used a cloud voice service before, but now you want to pick up again without sending private text away. Supertonic is an open source project that gives you ready examples for many coding languages. It speaks thirty one languages and writes clear audio files on your machine. The project page shows a demo running on a small e reader in airplane mode. That proves the voice works with no internet connection at all. The code is free and open source, so you can keep full control of your audio. Would you use this workflow in your own app?

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