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LumenVox Text-to-Speech Server

Over the years, many LumenVox Speech Engine customers have asked for a Text-to-Speech (TTS) Engine of comparable quality to our other ASR products. Starting with LumenVox version 10.0, Text-to-Speech technology is available offering the most realistic, natural sounding speech on the market.

We offer male and female voices in:

  • U.S. English
  • U.K. English
  • Australian English
  • Mexican Spanish
  • Castilian Spanish
  • French
  • German
  • Polish
  • Romanian

The LumenVox TTS Server provides text-to-speech synthesis, turning written text into spoken speech. It supports the Speech Synthesis Markup Language (SSML), a way to format text within XML to control the pronunciation of words, but it can also accept plain text in order to perform synthesis. As with the LumenVox Speech Engine, the primary method of interacting with the TTS Server is through the Media Server in which case synthesized audio is provided back to the client application as an RTP stream.

This technology allows any computer or IVR application to convey information to a user providing an accurate and affordable means of speech enabling your telephony platform or software application.

Some common uses include telephone systems, automotive applications, and programs to assist the disabled. It is particularly useful when reading dynamic data that cannot be pre-recorded, such as reading live text from the Web or a street address from a database.

The TTS Server was developed specifically to work with our Media Server, meaning that it can be controlled through MRCP versions 1 or 2, allowing for drop-in replacement of other TTS engines in dozens of various voice platforms supported by LumenVox. It also features an extension of the LumenVox C and C++ application programming interface, so you can write a custom application around the TTS Engine for total control.

And with the same client/server architecture used by the Speech Engine, it supports a fully distributed environment. Installing the LumenVox software across multiple machines allows for redundancy in your network, optimized server performance and the ability to grow your application environment with your business.

One or more voice packages, also referred to as modules, can be purchased, downloaded, and installed in a manner similar to the LumenVox Speech Engine?s language packages. These voices provide support for different languages and also provide different voices for a single language. For instance, American English has support for a variety of male and female voices to suit a user?s exact needs.

LumenVox's TTS Server is designed to excel in telephony, IVR, and other similar command/control environments. So whether you are speech enabling a call router or looking to develop applications for the burgeoning mobile market, LumenVox has the full suite of products you need.


  • US English (Male Female)
  • UK English
  • Mexican Spanish



  • 250 MB disk space per voice
  • 512 MB RAM (min)
  • 2 GHz Processor


  • API = C, C++
  • MRCP v1 and v2


  • Windows
  • XP
    2003 Server
    2008 Server
    Windows 7

  • Linux
  • Red Hat Enterprise Cent OS Debian



  • Contact Us

    Toll Free: (877) 977-0707,
    say "Sales"

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