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Evaluation of acoustical parameters of a Brazilian popular housing model

Ferreira A., Diniz F. B, Ferreira J.

Archives of Acoustics

2004

Vol. 29, no. 1

123-127

The present survey shows the results obtained from the evaluation of the acoustical parameters in situ, through standardized measurements, inside a popular residence designed to offer an option to combat the housing deficit of the low income Brazilian population.

Evolution of noise pollution in the Botanical Garden of Curitiba, Brazil: A case study

Zannin P. H. T., Szeremetta B., Diniz F. B

Archives of Acoustics

2003

Vol. 28, no. 2

101-107

A study has been conducted in the Botanical Garden of the city of Curitiba, Brazil, regarding to noise pollution found in this park and generated by the nearly streets. In order to do so, measurements of noise levels have been carried out in 21 points spread troughout the park, and some local visitors were interviewed. It has been found out that 47.6% out of the measurement sites has presented noise levels that have excended 65 dB(A), which is considered as the maximum noise level one can be exposed to according to the Preventive Medicine, and 95% out of the measerement points have showed levels over the local legislation, the law number 8583 from 1995, which states the noise limits allowed for the several urban zones of the city.