# How to Control Speech Speed with the Speed Parameter in Supertonic

> Easily control speech speed in Supertonic using the speed parameter. Learn how this simple setting adjusts phoneme durations for precise vocal control and improved clarity. Get started today.

- Repository: [Supertone Inc./supertonic](https://github.com/supertone-inc/supertonic)
- Tags: how-to-guide
- Published: 2026-05-14

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**The `speed` parameter in Supertonic scales predicted phoneme durations by dividing them by the speed factor, where values greater than