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The LumenVox Text-to-Speech (TTS) Server enables your application to synthesize text-to-speech to create the most realistic, natural-sounding voices on the market.

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Use your customers’ unique voice patterns for seamless security and effortless authentication

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Simple, Realistic, Scalable

Speech Synthesis

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, and it can also accept plain text in order to perform synthesis. When interacting with the LumenVox TTS service synthesized audio is provided back to the client application as a Real-time Transport Protocol (RTP) stream.

Standards Support

LumenVox TTS can be accessed directly through using a gRPC API, or via the MRCP API server using Media Resource Control Protocol (MRCP) versions 1 or 2, allowing for drop-in replacement of other TTS engines in dozens of various voice platforms supported by LumenVox. Using either method you have total control of our TTS resources.

Distributed Architecture

You can’t afford service outages or hardware failures. The versatility of the LumenVox TTS client/server architecture allows your administrators to seamlessly grow speech environments. This distributed architecture provides stability through redundant installations and achieves higher levels of performance through load balancing, without requiring increased processor load.

Bring your voice experiences to life with LumenVox Neural TTS. Our advanced technology delivers remarkably natural-sounding voices, capturing the nuances of human speech. Expand your global reach with support for new languages like Mandarin and Japanese (coming soon).

Experience the future of voice today.

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If you find a voice you like contact sales to find out more

Advanced Text to Speech Technology

Voice Packages

The LumenVox TTS Server is available in over a dozen languages with a variety of male or female voices for each language so that you can customize your solution to provide the most natural experience for your customers.

Language support includes: American English, Australian English, Brazilian Portuguese, British English, Latin American Spanish, North American Spanish, Castilian Spanish, Danish, Dutch, European French, European Portuguese, Icelandic, Indian English, Italian, Polish, Romanian, Russian, Swedish, Turkish, Welsh, Canadian French, Standard German, and more.

Turn Written Text to Spoken Word

The LumenVox Text-to-Speech (TTS) Server is a complementary solution to our Automatic Speech Recognition (ASR) engine, enabling your application to synthesize text-to-speech to create the most realistic, natural sounding voices on the market. This technology is critical when reading dynamic computer data that cannot be prerecorded, such as reading live text from the Web or a street address from a database. Other common TTS uses include telephone systems, automotive applications, and programs to assist the disabled. With the ability to incorporate it into any computer or IVR application, the LumenVox TTS Server provides an accurate and affordable speech solution for your telephony platform or software application.


ASR and TTS products from different vendors often compete for machine resources or require elaborate programming to make them work in concert. LumenVox maintains a tight integration among all of its products. The LumenVox ASR and LumenVox TTS interfaces incorporate the same look and feel, and the LumenVox MRCP API Server efficiently manages the resource demands system hardware.

Hear What our Partners and Industry Analysts are Saying about LumenVox

“Including LumenVox voice technology means we’re able to offer very strong authentication at reasonable prices and for both our organisations to benefit from our respective ecosystems."
Grant Crow
CEO at SmilePass
“Our customers include the largest and most successful brands worldwide who depend on us to meet their business objectives and provide outstanding customer experiences. We are seeing the demand for speech as part of the customer experience accelerate across many industries, but especially in financial services. LumenVox has proven to not only be a great partner, but they are able to help us deliver high performing, speech-enabled solutions at scale and deliver large ROI.”
Jason Herrera
Global Client Director, Financial Services at Avaya
"One of the keys to Lumenvox’s success is the broadening of its core portfolio while pivoting to be a more product-focused company. This has doubled LumenVox’s reach and allows the company to market core technologies embedded in a variety of provider platforms or be sold as white-labeled solutions."
Nancy Jamison
Industry Director at Frost & Sullivan
“We're excited to bring the capabilities of LumenVox’ products to our customers. Speech interfaces are of critical importance to our customers, as they enable easy to use interactions that increase customers’ usage and acceptance of automation.”
Michael Hentges
CTO at Digital DataVoice

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