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Riva SS Plugin 1.0.0 Released

Riva Speech Synthesis (SS) Plugin 1.0.0 to the UniMRCP Server (UMS) has been released.

The plugin is based on the following components:

  • UniMRCP Server 1.7.0
  • NVIDIA Riva Speech Skills 2.0.0
  • gRPC 1.30.3
  • Protobuf 3.12.2

The binaries are currently available for the following Linux distributions:

  • Red Hat / CentOS 7 (unimrcp-riva-ss-1.7.0-1.el7.x86_64.rpm)
  • Red Hat / CentOS 8 (unimrcp-riva-ss-1.7.0-1.el8.x86_64.rpm)
  • Ubuntu 18.04 LTS (unimrcp-riva-ss_1.7.0-bionic_amd64.deb)
  • Ubuntu 20.04 LTS (unimrcp-riva-ss_1.7.0-focal_amd64.deb)

IVR platforms can now utilize NVIDIA Riva Text-to-Speech API via UniMRCP Server.

NVIDIA Riva Text-to-Speech API performs text to speech conversion supporting the following main features.

Human Sounding Speech
The Riva TTS service is based on a two-stage pipeline, which forms a text-to-speech system that enables you to synthesize natural sounding speech.
Languages and Voices
The text to speech API supports a growing number of languages and voices.
Voice Output Parameters
By using SSML, the API allows to adjust pitch, rate, and pronunciation through phoneme.
Custom Model
Riva allows to build, train and deploy custom models.


For installation, configuration and usage instructions, follow the guides available on a new Riva SS plugin page.

Please note this is a commercial module. Everyone is welcome to start evaluation by requesting a trial license.

Thank you for using UniMRCP.

Arsen Chaloyan
Author of UniMRCP

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