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Com o passar do tempo, a exigência sobre as construções foi se tornando cada vez maior no quesito da
economia, conforto, desempenho, entre outros. É neste contexto que a acústica é inserida como uma
necessidade a ser atendida pelas construções. Esta deve atender a diversos parâmetros para que seja
considerada como satisfatória, sendo o tempo de reverberação – objeto de estudo deste trabalho – um
deles.
O tempo de reverberação está diretamente ligado ao entendimento das palavras dentro de um
compartimento, ou seja, para que os ouvintes possam entender o locutor claramente, é necessário que o
tempo de reverberação seja adequado. O ISEP – Instituto Superior de Engenharia do Porto – como
instituição de ensino demanda de ambientes que contemplem um tempo de reverberação adequado para
que a transmissão de toda a informação seja eficiente.
Por isso, este trabalho tem por objetivo analisar o tempo de reverberação das salas do ISEP, comparando
os valores ensaiados com os teóricos, observar a influência de variáveis cotidianas e sugerir possíveis
melhorias para algumas salas. A fórmula utilizada foi a de Sabine, pois as salas se enquadrarem dentro de
seus parâmetros de aplicação, e foram ensaiadas sete salas, sendo dois auditórios, uma sala de reuniões
e quatro salas de aula, com o auxílio dos equipamentos Brüel & Kjaer. As variáveis analisadas foram as
janelas, os estores, os blackouts e a presença de pessoas. Os resultados apresentados demonstram que a
presença de pessoas é a variável que, dentro daquelas estudadas, mais diminui o tempo de reverberação
e que nenhuma das salas abordadas se enquadram dentro da legislação estudada, sendo necessária a
reforma das mesmas que pode contar com o uso de cadeiras de assento estofado e painéis perfurados.
Over time, the demand on construction has been increasing in the economy, comfort, performance, among other aspects. Acoustics is inserted in this context as a necessity to be achieved by the constructions. This must comply with several parameters to be considered as satisfactory, being the reverberation time - object of study of this work - one of them. The reverberation time is directly linked to the understanding of the words within a compartment, in other words, to the listeners understand the speaker clearly it is necessary an adequate reverberation time. The ISEP - Instituto Superior de Engenharia do Porto - as an educational institution demands environments that contemplate a suitable reverberation time so that the transmission of all information is efficient. Therefore, this paper has the objective of analyzing the reverberation time of the ISEP rooms, comparing the values tested with the theoreticians, observing the influence of daily variables and suggest possible improvements for these rooms. To perform this work was used Sabine’s formula, since the rooms fit within their application parameters, and seven rooms were tested, being two auditoriums, a meeting room and four classrooms, with the help of Brüel & Kjaer equipment. The analyzed variables were the windows, the blinds, the blackouts and the presence of people. The results show that the presence of people is the variable that, among those studied, decreases the reverberation time. It was also noticed that none of the rooms comply with the legislation studied, being necessary the reform of them what can be done using upholstered seat chairs and perforated panels.
Over time, the demand on construction has been increasing in the economy, comfort, performance, among other aspects. Acoustics is inserted in this context as a necessity to be achieved by the constructions. This must comply with several parameters to be considered as satisfactory, being the reverberation time - object of study of this work - one of them. The reverberation time is directly linked to the understanding of the words within a compartment, in other words, to the listeners understand the speaker clearly it is necessary an adequate reverberation time. The ISEP - Instituto Superior de Engenharia do Porto - as an educational institution demands environments that contemplate a suitable reverberation time so that the transmission of all information is efficient. Therefore, this paper has the objective of analyzing the reverberation time of the ISEP rooms, comparing the values tested with the theoreticians, observing the influence of daily variables and suggest possible improvements for these rooms. To perform this work was used Sabine’s formula, since the rooms fit within their application parameters, and seven rooms were tested, being two auditoriums, a meeting room and four classrooms, with the help of Brüel & Kjaer equipment. The analyzed variables were the windows, the blinds, the blackouts and the presence of people. The results show that the presence of people is the variable that, among those studied, decreases the reverberation time. It was also noticed that none of the rooms comply with the legislation studied, being necessary the reform of them what can be done using upholstered seat chairs and perforated panels.
Descrição
Palavras-chave
Acústica Fórmula de Sabine Tempo de Reverberação Absorção Acoustics Sabine's formula Reverberation Time Absorption