How to improve AI Voice pronunciations

Josh York, Christopher Zheng

Published: Nov 06, 2025

Every brand has its own way of speaking. Maybe it's a company name, a medical term, or a local place that only your customers would recognize. The new Pronunciations feature in the Syllable Console lets you define exactly how those words should sound.

You can describe pronunciations in plain language using a simple CSV file. From product names to acronyms, your AI agents can now speak with the same confidence and clarity as your best human representative thanks to the TTS Gateway.

How Pronunciations work

• Go to Voices, then Pronunciations in the Syllable Console
• Download the CSV template and fill in three simple columns: text, replacement, and language
• Pronunciations uses a replacement word to explain how to pronounce a difficult spelling (for example, colonel = kernel)
• Upload your updated file to apply custom pronunciations across your organization
• Test your updates on the same page, across multiple voice providers

Each pronunciation rule takes effect immediately, so you can hear results in your next Voice Preview or call test.

Best practices

• Match the text field exactly to how the word appears in your scripts or responses
• Use phonetic spellings or simple re-spellings in the replacement column
• Confirm that the language matches the voice model you are using
• Focus on high-value words such as company names, product terms, or commonly used industry phrases

For detailed instructions, see Pronunciations in the Syllable Docs.

Perfect pronunciation

The Pronunciations feature helps your AI agents speak the way your team and customers do. They sound natural, professional, and aligned with your brand. Optimize your agents for the best experience. Try it in the Console today and make your next conversation sound unmistakably yours.