[Analysis of the status of the acoustic environment in the cities of the People's Republic of Bulgaria during the 8th 5-Year Plan and the measures for noise limitation and abatement in population centers].

The experience of the National System of Control, Restriction and Decrease of the Urban Noise, as unique one in the member countries of Comecon and the interpretation of the results of its activity are of special interest. Amidst the variety of complex problems for environmental protection from the noxious agents effect, of special interest are those related to the elucidation of the mechanism, spreading, rate of effect and undertakings for noise control from the factor noise in the conditions of the urban environment. The analysis on the activity of noise control in the towns all over this country since 1976 has shown as predominating the noise level of range 68-72 dB/A--value above the quota to which the majority of the population is subject. This imposes the carrying out of urban, planning and organization, architectural, organization and technical measures as well as methodical renovation of the Noise Control System, presented in the working out, which will assist in the optimization of the acoustic environment on the towns.