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Azure SS Plugin 1.24.0 Released

April 3 2024

Microsoft Azure Speech Synthesis (SS) Plugin 1.24.0 to the UniMRCP Server (UMS) has been released.

The plugin is based on the following components:

  • Microsoft Text-to-Speech REST API
  • Libevent 2.1.9
  • Rapidjson 1.1.0

The plugin supports the following endpoints:

  • Speech Service (regional)
  • Custom Speech Service (regional)
  • Speech Service (containerized)
  • Custom Speech Service (containerized)
  • Speech Service (private)
  • Custom Speech Service (private)

The plugin is available for the following UMS versions:

  • 1.7.0
  • 1.8.0

The binaries are currently available for the following Linux distributions:

  • Red Hat / CentOS 7
    • unimrcp-azure-ss-1.7.19-1.el7.x86_64.rpm
    • unimrcp-azure-ss-1.8.6-1.el7.x86_64.rpm
  • Red Hat / CentOS 8
    • unimrcp-azure-ss-1.7.19-1.el8.x86_64.rpm
    • unimrcp-azure-ss-1.8.6-1.el8.x86_64.rpm
  • Ubuntu 20.04 LTS
    • unimrcp-azure-ss_1.7.19-focal_amd64.deb
    • unimrcp-azure-ss_1.8.6-focal_amd64.deb
  • Ubuntu 22.04 LTS
    • unimrcp-azure-ss_1.7.19-jammy_amd64.deb
    • unimrcp-azure-ss_1.8.6-jammy_amd64.deb

This release adds support for language-based on-prem service endpoints used with multi-language applications. The release allows to specify custom styles per voice and provides other minor fixes and improvements.

The detailed list of changes introduced in this release follows.
New Features
  • Added support for language-based on-prem service endpoints used with multi-language applications.
  • Added support for optional prefix used with names of vendor-specific parameters.
  • Allow prosody parameters to be specified via vendor-specific parameters.
  • Allow to specify a lexicon URI in three different ways as voice element (default), voice attribute or HTTP header.
  • Added support for multiple lexicon URIs separated by ';'.
  • Added support for custom styles specified per voice in the configuration file of voices.
Fixed Problems
  • Fixed a race condition issue in processing SPEAK -> STOP -> SPEAK requests. The problem is encountered when the first SPEAK request is placed via HTTP to the service endpoint and stopped immediately, while the second SPEAK request is served from the local cache.
  • Make sure special characters are always escaped in SSML.
  • Properly support changes in the language or service endpoint in subsequent requests placed in the scope of the same MRCP session.
Configuration Parameters
  • Added a new attribute 'language' to the element 'service-endpoint'.
  • Added a new attribute 'vendor-specific-prefix' to the element 'synth-settings'.
Miscellaneous
  • Added the AlexNeural voice for es-PE to the default configuration file of voices.
  • Updated the Usage Guide to reflect the changes introduced in this release.

Visit the Azure SS plugin page for more information.

Thank you for using UniMRCP.

--
Arsen Chaloyan
Author of UniMRCP
http://www.unimrcp.org

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