How to assess and improve the quality of voice services in telephone communication and alarm systems in mines
Journal Title: Mining – Informatics, Automation and Electrical Engineering - Year 2016, Vol 526, Issue 2
Abstract
The article presents selected objective and subjective methods to assess the quality of voice services in telephone communication. The authors described the impact of the line and acoustic echo phenomena and ambient noise on the functions of telephone communication systems with respect to the speakerphone mode. Additionally, they discussed the possibilities to apply digital technology to improve the quality of voice services in telephone communication and alarm systems.
Authors and Affiliations
Antoni Wojaczek, Kazimierz Miśkiewicz
Keywords
Related Articles
- EP ID EP283390
- DOI -
- Views 147
- Downloads 0
Analysis of switching on selected electrical high voltage circuits
Physical phenomena occurring in high-current contact systems of electric switches, when switching on unloaded transformers and capacitor banks, are much more dangerous than the phenomena occurring in the contact switch s...
Flash-butt welding of high-strength rails
The article features the results of research in the field of welding highstrength rails. The scope of the research combined not only monitoring of the welding process as such but also the assessment of the achieved resul...
Testing the impact of input signals disturbances of PI controllers in a field-oriented control system with an induction motor
W artykule omówiono wpływ jakościowy zakłóceń działających na sygnały wejściowe poszczególnych regulatorów w układzie polowo-zorientowanym, w którym obiektem sterowania prędkością obrotową jest silnik indukcyjny. Nastawy...
Safety improvement achieved by prevention actions related to aerological hazards – sample cost analysis
The article features the characteristics of expenditure incurred by mining companies on occupational health and safety operations. It was indicated that proper measures and methods have to be selected to improve the safe...
Autonomous fiber-optic gas monitoring system with thermoelectric power supply
This paper presents the concept of an autonomous measuring instrument powered by a locally accessible source of heat with a contact surface area of over a dozen or several dozen cm2 and a temperature higher or lower than...