The purpose of this software is to measure the mouth-to-ear (M2E) latency of a push-to-talk network. M2E latency characterizes the time between speech input into on communications device and its output through another. M2E latency has been identified as a key metric of quality of experience (QoE) in communications. NIST's PSCR group developed this software to measure and quantify the M2E latency of Push To Talk (PTT) devices.
- Mouth-to-ear latency measurement software available at: https://github.com/usnistgov/mouth2ear
- MCV QoE GUI software available at : https://github.com/usnistgov/mcvqoe
- Core MCV QoE library available at : https://github.com/usnistgov/mcvqoe-base
- Data available at: https://doi.org/10.18434/M31865
- Paper available at https://doi.org/10.6028/NIST.IR.8206
- 2 computers able to run Python (only one needed for one location measurements)
- 2 audio interfaces (only one needed for one location measurements)
- 2 timecode generators with IRIG-B outputs (not needed for one location measurements)
- QoE hardware
- 2 push-to-talk communications devices for testing
- Cables to connect test devices and timecode generators (if used) to audio interfaces
To install this package run
pip install mcvqoe-mouth2ear
Alternatively, to install the mcvqoe-mouth2ear package, clone this repository and run the
following from the root of the git repository:
pip install .
The mcvqoe-base package is required for install, it can be found at https://github.com/usnistgov/mcvqoe-base.
It is also recommended to install the mcvqoe package which has the measurement GUI to make measurements easier and more intuitive to run. It can be found at https://github.com/usnistgov/mcvqoe.
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:
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