
handle: 10216/83753
Por forma a avaliar o efeito do tamanho da amostra nos ensaios em câmara reverberante para determinação do coeficiente de absorção sonora, estudou-se o possível tamanho mínimo de amostra necessária para obtenção de um valor aceitável e credível, uma vez que a grande área dos exemplares necessários para estudo pode, por vezes, ser um entrave para quem quer testar o seu material. Utilizaram-se para os ensaios amostras de 1 até 12 m 2 (de 1 em 1 m2 ). Também se analisou qual a influência que tinha a disposição da amostra na sala, testando-se para 10 m2 dispostos no centro ou espalhados pelo piso da câmara reverberante.
To evaluate the influence of the sample size on the experiments in a reverberant chamber to determine the sound absorption coefficient, the reasonable minimum sample area needed was analyzed, considering that the quantity of material is important for those who want to test it. Samples from 1 to 12 m2 (by increments of 1 m2 ) were used. The influence of the sample position on the room's floor has also been tested for a 10 m2 sample arranged on the center of the reverberating chamber and scattered around the room.
Acoustics, Civil engineering, Sound engineering, Sound technology, Civil engineering, Ciências da engenharia e tecnologias::Engenharia civil, Engineering and technology::Civil engineering, Acústica, Engenharia civil, Engenharia do som, Tecnologia do som, Engenharia civil
Acoustics, Civil engineering, Sound engineering, Sound technology, Civil engineering, Ciências da engenharia e tecnologias::Engenharia civil, Engineering and technology::Civil engineering, Acústica, Engenharia civil, Engenharia do som, Tecnologia do som, Engenharia civil
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