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Azure SR Plugin 1.34.0 Released

September 29 2025

Microsoft Azure Speech Recognition (SR) Plugin 1.34.0 to the UniMRCP Server (UMS) has been released.

The plugin is based on the following components:

  • Microsoft Speech WebSocket Protocol
  • 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 8
    • unimrcp-azure-sr-1.7.32-1.el8.x86_64.rpm
    • unimrcp-azure-sr-1.8.12-1.el8.x86_64.rpm
  • Red Hat 9
    • unimrcp-azure-sr-1.7.32-1.el9.x86_64.rpm
    • unimrcp-azure-sr-1.8.12-1.el9.x86_64.rpm
  • Ubuntu 20.04 LTS
    • unimrcp-azure-sr_1.7.32-focal_amd64.deb
    • unimrcp-azure-sr_1.8.12-focal_amd64.deb
  • Ubuntu 22.04 LTS
    • unimrcp-azure-sr_1.7.32-jammy_amd64.deb
    • unimrcp-azure-sr_1.8.12-jammy_amd64.deb

This release adds support for distinct credentials files specified per service endpoint in the plugin configuration. The release also fixes a minor issue.

The detailed list of changes introduced in this release follows.
New Features
  • Added support for distinct credentials files specified per service endpoint in the plugin configuration.
Fixed Problems
  • Fixed a possible partial purge of saved waveform files by populating a list of matching files from the filesystem first and deleting the populated files next.
Configuration Parameters
  • Added a new attribute 'subscription-key-file' to the element 'service-endpoint'.
Miscellaneous
  • Updated the Usage Guide to reflect the changes introduced in this release.

Visit the Azure SR plugin page for more information.

Thank you for using UniMRCP.

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

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