CPqD Text to Speech

Customize user interaction in a natural and humanized way, using speech synthesis, converting any text to speech, in real time.

CPqD Text to Speech uses cutting-edge technology to provide high-quality voices and ensure the best user experience possible. The speech synthesis techniques we use (parametric models and unit selection) produce natural-sounding, expressive voices to be used in several different applications and environments (IVR, smartphones, computers, embedded systems, etc.).


  • Applied to devices with different capacities
  • The speech synthesis technology used by CPqD Text to Speech - parametric models and unit selection - make it possible to be used with quality in computer environments with different memory capacities and processing power (smartphones, tablets, computers, IVR, etc.).

  • SDK
  • API for C/C++ and Java software development, including usage examples and documentation.

  • Flexible integration
  • The CPqD Text to Speech API supports any application or device that can be integrated via HTTP REST, MRCP v1 and v2 or Websocket interfaces.

  • Streaming support
  • The generated audio can be delivered as the synthesizer produces the synthetic speech, meeting the needs of systems based on media streaming, operating in real time.

  • Multiple voices and languages in a single instance
  • Allows several voices and languages in the same installation, expediting the use of the technology and simplifying interaction with different applications.
  • Available voices and languages
  • Rosana (female Portuguese)
  • Carlos (male Portuguese)
  • Paola (female Spanish)
  • Use different voices in the same text
  • The API allows different voices to be used alternately in the synthesis of a text, as well as the use of prerecorded synthetic speech audio, by means of simple SSML tags.

  • Expression and sound effects
  • CPqD Text to Speech can be made to sound even more naturally by adding expression (different recording styles, or expressing emotions such as joy, anger or surprise, for example), by voice variations (rhythm or intonation), and sound effects (breathing, laughter, crying, etc. ). These features can be easily and speedily integrated by means of SSML tags inserted in the text itself.

Possible applications:

  • IVR with personalized greetings
  • Vocalized mobile applications
  • Vocalized site texts
  • Vocalized educational material, books, magazines, etc.
  • Voice interaction in self-service machines and kiosks
  • Voice interaction in home automation
  • Several other possibilities
  • Advantages:

  • to create the greetings and conversations you wish without needing to prerecord them.
  • for quickly implementing and testing new interactions with simple configurations that are immediately updated.
  • in relationships, the most professional Brazilian voice transmitting trust and assurance in all interactions.

    Professional Services:

  • Customization of existing voices (analyzing the phraseology of the application and customizing CPqD Text to Speech to maximize the quality of the synthesized voice in this context).
  • Recording the app's prompts with the same voice used for synthesis.
  • Customized voices: on demand creation of a personalized voice for your company.
  • The creation of natural dialogs with expression and emotion based on HCI (human-computer interactions) concepts.
  • Talk to one of our specialists.

    CPqD develops and offers robust network analysis and structuring projects with operational and energetic efficiency, as well as predictive maintenance.

    Talk to a Specialist

    Talk to one of our specialists