Glossary

What is Text-to-speech (TTS)?

Text-to-speech (TTS) is the technology that converts written text into spoken audio. In AI calling, TTS gives the voice agent its voice, turning the system's generated response into natural, human-sounding speech the caller hears.

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By Alex Le, Echo product teamUpdated August 2026

Modern TTS produces realistic intonation, pacing, and warmth, which is essential in healthcare, where patients are often anxious and a robotic voice erodes trust.

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Related terms

All 41 terms in the AI calling glossary.

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