| I.L. Shubin |
NOISE MONITORING IN CITIES |
Research institute of Building physics RAABS, Moscow, Russia
E-mail:niisf@ipc.ru |
Substantive provisions of the national standard draft ”Acoustics. Noise
monitoring of cities” are considered. The concept of environmental noise
monitoring, its destination and a field of application are given. The operational
and inlet Russian, International standards and the European directives used
at realization of monitoring are listed. As the main noise indexes for the monitoring
purposes rating levels are set, which are defined on the equivalent continuous
and maximum A-weighted sound pressure levels separately for day-time, evening
and night, and also composite whole-day rating levels during period day-evening-night.
For rating of tonal sound and sounds with strong low-frequency content alongside
with the indicated quantities will use also appropriate rating sound pressure
levels in octave frequency bands in which the basic power of sound is concentrated.
The expediency of selection evening-time period from day-time period is scored
despite lacking the special demands to noise in the evening time in practice
of sanitarian noise rating. For the purposes of noise estimation limit values
of the entered noise indexes are fixed, comparison with which of actual or predicted
values of noise indexes allows to reveal violations of noise demands and to
allocate the noise sources, which are responsible for fixed violation. The concept
of operating noise maps is entered and rules for noise mapping are described.
