Investigation of the noise attenuation from outdoor to indoor of typical residential buildings in China Investigation of the noise attenuation from outdoor to indoor of typical residential buildings in China
- Autores: Hui Xie
- Localización: Proceedings of the ISRA 2007 Seville, Vol. 2, 2008 (Poster Session Communications), ISBN 9788469082676
- Idioma: inglés
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Resumen
Nowadays, more and more people in china began to suffer from the noise pollution due to the rapid urban development. This study outlines the result of noise attenuation investigations from outdoor to indoor at a typical roadside building in china. Two sound meters were placed in the centre of the outdoor balcony and the indoor living room of the building, respectively. They could simultaneously auto-record the sound level of outdoors and indoors at every second. Then, 23105 group data was obtained by the field measurement in the morning, afternoon and night, which was 9:30am- 12:00 am, 2:30pm- 5:30pm and 1:00am- 3:30am. After analyzed by the statistic software SPSS 13.0, three models in different time were listed. In the models, the dependent factor was the outdoor-indoor relative attenuation, the independent factors was the outdoor sound level. Ten Curve-fitting methods, including linear, quadratic, compound, growth, logarithmic, cubic, S, exponential, inverse, power equations, were used to determine the correlation between dependent and independent factors. After compared the R Square of each equation, it is concluded that the quadratic equation is the best model to describe the outdoor-indoor noise attenuation with R2>0.97 at all the three different time.
