Assessment of Infrasound and Low Frequency Noise—Case Study in a Community of Inhabitants Near Wind Turbines

Abstract

Technological advances in the construction of wind turbines with lower noise emission have been many, however they continue to be responsible for producing infrasound and low frequency noise that can affect the quality of life of human populations (hypertension, discomfort, sleep disorders, among others). Assess the levels of infrasound and low-frequency noise at which residents in the vicinity of the wind turbines were taking into account wind direction, air speed and distance to the source. The analytical collection was carried out inside houses in the district of Viana do Castelo, using a CESVA SC420 sound level meter. The distance to the noise source was not a relevant factor in the attenuation. The wind speed and direction were responsible for the noise expression. The southernmost dwellings in the region under study were more exposed to higher levels of this types of noise. It is important to adopt territorial management measures taking into account the protection of public health, environmental impact studies within the scope of the types of noise and safety distances, taking into account the population.