Measurement Method of Non-continuous Noise in Industrial Buildings of Railway Enterprises

Golovko, Aleksandr; Ledenev, V I; Antonov, A. I.

doi:10.1007/978-3-030-37919-3_23

VIII International Scientific Siberian Transport Forum

2020

DOI: 10.1007/978-3-030-37919-3_23

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Measurement Method of Non-continuous Noise in Industrial Buildings of Railway Enterprises

Aleksandr Golovko

V I Ledenev

A. I. Antonov

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Cited by 2 publications

References 8 publications

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Mathematical modeling of processes in the sound field of premises with speech notification

Epifanov,

Asminin,

Sazonova

2023

Modeling of Systems and Processes

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The problem of improving the intelligibility of the sound signal of the sounder, taking into account the background noise and noise interference, is considered. Mathematical modeling of processes in the sound field of premises is carried out taking into account the influence on the intelligibility of the speech signal of the structure of the sound field formed by speech fire alarms. The important components of the structure of the sound field formed by speech fire alarms, which affect the intelligibility of the speech signal, are considered. The modeling takes into account the level of background noise, which can complicate the audibility of speech and reduce its quality. It is also taken into account that the direct sound and the reflected component are parts of the sound field and affect the overall structure of the sound environment. The structure of the sound field is represented graphically. Mathematical models are given to determine the density of sound energy. The figures show a scheme for calculating interference and useful components of the sound field during the operation of one sounder, as well as graphs of the useful signal and interference that occur during the operation of three sounders. A general approach to determining the useful signal and interference from three alerts is considered. The considered approach to the evaluation of the structure of the sound field used in the software package makes it possible to clearly divide the incoming sound signals into useful components and interference, and it can also be useful in various fields.

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Mathematical modeling of processes in the sound field of premises with speech notification

Epifanov,

Asminin,

Sazonova

2023

Modeling of Systems and Processes

View full text Add to dashboard Cite

show abstract

System analysis of acoustic properties of voice sirens

Epifanov,

Asminin,

Sazonova

2024

Modeling of Systems and Processes

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The acoustic properties of fire alarm systems are considered. The analysis and correction of the existing system of classification of fire alarm systems has been carried out. Shortcomings have been identified in the requirements for fire safety monitoring for voice alerts and for the certification testing procedure for fire-fighting voice alarms. The completeness of linguistic information, which is the basic standard for the required completeness of information for evacuees in case of fire, is analyzed. The structure of the sound field in the room is considered, taking into account interference during the operation of fire alarm systems. For real fire alarms, the necessity of using passport data is justified in order to obtain acoustic characteristics for such alarms as a source of not only direct, but also reflected sound. These characteristics can be used to calculate the sound field of the premises, as well as to obtain information about voice information for warning and evacuation control systems. The main factors influencing the fire early warning system have been identified, as well as their assessment and systematization. To form standard requirements for the results of new methods of acoustic design of warning and evacuation management systems to be developed, the disadvantages of existing methods for calculating fire alarm systems are displayed

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Measurement Method of Non-continuous Noise in Industrial Buildings of Railway Enterprises

Cited by 2 publications

References 8 publications

Mathematical modeling of processes in the sound field of premises with speech notification

Mathematical modeling of processes in the sound field of premises with speech notification

System analysis of acoustic properties of voice sirens

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