Text-to-speech (speech synthesis)
In short
Text-to-speech (TTS, speech synthesis) converts written text into spoken language. This is how an AI phone assistant gets a natural voice to speak the generated reply out loud.
From text to voice
A TTS system analyses the text, sets intonation, pauses and pitch, and produces an audio signal from it. Modern neural models sound fluent and natural, far from the robotic voice of early systems.
Why it matters on calls
The voice decides how a call is perceived. A warm, clear TTS voice with natural intonation makes callers feel taken seriously and happy to keep talking.
Frequently asked questions
No, it is the counterpart. TTS turns text into speech (text-to-speech); speech recognition turns speech into text (speech-to-text).
Modern neural speech synthesis sounds natural, with intonation and pauses. Many callers do not notice the voice is synthetic.
Related terms
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