Vocalizer – Text-to-Speech (TTS) technology for IVR and digital channels

A more life-like automated voice for your brand

Vocalizer is a complete, enterprise-ready text-to-speech output engine that enables more human-like, personalized customer interactions for less cost and hassle than hiring voice talent.

A new generation of conversational AI technology

Creating audio output for the IVR and mobile apps can be complex and expensive. Nuance Vocalizer delivers a custom voice, trained on your use cases and dialogues, that speaks your language as fluently as a live agent.

Vocalizer uses advanced text-to-speech technology based on recurrent neural networks, delivering a far more human‑sounding voice with features including:

  • Graceful blending of static and dynamic speech output
  • Enhanced expressivity
  • Improved multilingual support
  • High-quality speech output
  • Refined speech quality and accuracy through optimized text processing
  • More comprehensive pronunciation dictionaries
  • Complete voice refresh in many languages

Get our latest resources

Vocalizer 7 Language and Voice Availability brochure

See the many different languages and voices available for this new generation of text-to-speech technology.

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Nuance Vocalizer 7 data sheet

Read about the humanlike text-to-speech for the voice of your brand.

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Time saved is money saved

A 25% improvement of IVR call handling for a business with 24M calls a year leads to the elimination of 60,000 agent calls, which can equal a savings of nearly $300,000/yr. (2M calls per month at $5 per agent call).


reduction in interaction time


reduction in interaction time


reduction in information delivery time


Enterprise-ready spoken output engine

A complete spoken text-to-speech output engine that enhances the IVR experience.