Skip to main content
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.

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.
Conference Dates
June 21-24, 2021
Conference Location
Boulder, CO, US
Conference Title
PSCR 2021: The Digital Experience

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

Citation

Greene, C. and Magrogan, W. (2021), PSCR 2021: Optimal Transmit Volume Conditions for Mission Critical Voice Quality of Experience Measurement Systems, PSCR 2021: The Digital Experience, Boulder, CO, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932575 (Accessed July 3, 2022)
Created September 28, 2021, Updated January 4, 2022