Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Repositório Aberto d...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
addClaim

Efeito do Tamanho da Amostra em Ensaios Laboratoriais de Absorção Sonora

Authors: António P. O. Carvalho; Mário R. M. Sousa;

Efeito do Tamanho da Amostra em Ensaios Laboratoriais de Absorção Sonora

Abstract

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.

Country
Portugal
Keywords

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

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green