PURPOSE

The purpose of this software is to measure speech intelligibility of a push-to-talk network. This measurement system uses the ABC_MRT as developed by ITS to compute intelligibility.

MORE INFORMATION

A description of the ABC_MRT16 algorithm can be found at https://www.its.bldrdoc.gov/publications/download/Voran-ICASSP17.pdf

OBTAINING SOFTWARE

• Intelligibility measurement software available at: https://github.com/usnistgov/intelligibility
• MCV QoE GUI software available at : https://github.com/usnistgov/mcvqoe
• Core MCV QoE library available at : https://github.com/usnistgov/mcvqoe-base

HARDWARE REQUIREMENTS

• 1 computer able to run Python 3.6 or newer
• 1 audio interface
• 2 communications devices for testing
• QoE hardware
• cables to connect test devices to QoE hardware
• Audio cables to connect QoE hardware to audio interface

RUNNING MEASUREMENT SOFTWARE

The easiest way to use the measurement system is to run the GUI (https://github.com/usnistgov/mcvqoe).

Installation of Software

To install the package run the following:

pip install mcvqoe-intelligibility

Alternatively, to install the mcvqoe-intelligibility package, clone this repository and run the following from the root of the git repository:

pip install .

TECHNICAL SUPPORT

For more information or assistance on access delay measurements please contact:

Public Safety Communications Research Division
National Institute of Standards and Technology
325 Broadway
Boulder, CO 80305
PSCR@PSCR.gov

DISCLAIMER

Much of the included software was developed by NIST employees, for that software the following disclaimer applies:

This software was developed by employees of the National Institute of Standards and Technology (NIST), an agency of the Federal Government. Pursuant to title 17 United States Code Section 105, works of NIST employees are not subject to copyright protection in the United States and are considered to be in the public domain. Permission to freely use, copy, modify, and distribute this software and its documentation without fee is hereby granted, provided that this notice and disclaimer of warranty appears in all copies.

THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM, OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY, CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.

Some software included was developed by NTIA employees, for that software the following disclaimer applies:

THE NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION, INSTITUTE FOR TELECOMMUNICATION SCIENCES ("NTIA/ITS") DOES NOT MAKE ANY WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT AND DATA ACCURACY. THIS SOFTWARE IS PROVIDED "AS IS." NTIA/ITS does not warrant or make any representations regarding the use of the software or the results thereof, including but not limited to the correctness, accuracy, reliability or usefulness of the software or the results.

You can use, copy, modify, and redistribute the NTIA/ITS developed software upon your acceptance of these terms and conditions and upon your express agreement to provide appropriate acknowledgments of NTIA's ownership of and development of the software by keeping this exact text present in any copied or derivative works.

The user of this Software ("Collaborator") agrees to hold the U.S. Government harmless and indemnifies the U.S. Government for all liabilities, demands, damages, expenses, and losses arising out of the use by the Collaborator, or any party acting on its behalf, of NTIA/ITS' Software, or out of any use, sale, or other disposition by the Collaborator, or others acting on its behalf, of products made by the use of NTIA/ITS' Software.

Audio files included with this software are from the MRT Audio Library.