NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

PSCR 2021: Optimal Transmit Volume Conditions for Mission Critical Voice Quality of Experience Measurement Systems

Published

Author(s)

Chelsea Greene, William Magrogan

Abstract

The Mission Critical Voice quality of experience measurement system is utilized for a variety of measurements for push-to-talk communications systems. Volume, both transmitted and received by a communications device, can impact audio distortion levels within the measurement system. The goal of this project is to develop a measurement that captures audio distortion from overdriving speech into a transmit device and how that comes through the communications system and takes these measurements across a series of volume settings. This presentation focuses on the development of that specific distortion measurement and the methods developed to find optimal transmit volume settings as well as the mathematical analysis completed to accomplish this.
Pub Type
Talks

Download Paper

Local Download

Keywords

Analog, Audio, Communications, Direct mode, Distortion, Frequency, Frequency Slope Fit (FSF), Mission Critical Push-to-Talk (MCPTT), Mission critical voice (MCV), Mouth-to-ear (M2E), Plateau, Project 25 (P25), Public safety, Push-to-talk (PTT), Quality of experience (QoE), Volume
Public safety communications research

Citation

Greene, C. and Magrogan, W. (2021), PSCR 2021: Optimal Transmit Volume Conditions for Mission Critical Voice Quality of Experience Measurement Systems, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932575 (Accessed October 11, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created September 28, 2021, Updated November 29, 2022
Was this page helpful?