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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Todos entenderam?: compatibiliza??o das caracter?sticas arquitet?nicas e qualidade ac?stica em salas de aula nas institui??es federais de ensino superior de Natal/RN

Alves, Luciana da Rocha 15 January 2018 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-12T13:16:34Z No. of bitstreams: 1 LucianaDaRochaAlves_DISSERT.pdf: 9401265 bytes, checksum: f92b96e2b2132ac22c0f981a1b4c33f8 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-13T20:41:49Z (GMT) No. of bitstreams: 1 LucianaDaRochaAlves_DISSERT.pdf: 9401265 bytes, checksum: f92b96e2b2132ac22c0f981a1b4c33f8 (MD5) / Made available in DSpace on 2018-03-13T20:41:49Z (GMT). No. of bitstreams: 1 LucianaDaRochaAlves_DISSERT.pdf: 9401265 bytes, checksum: f92b96e2b2132ac22c0f981a1b4c33f8 (MD5) Previous issue date: 2018-01-15 / O Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / Escolas s?o lugares de aprendizagem em que comunica??o ? primordial para que seja cumprida a sua fun??o, por?m a maioria das escolas brasileiras n?o possuem condi??es ac?sticas adequadas para tal. Quando a mensagem falada n?o ? claramente escutada pelos alunos, a compreens?o do discurso ? afetada e, consequentemente, o processo de aprendizagem ? prejudicado. Boas condi??es ac?sticas em salas de aula tornam o processo de aprendizagem mais f?cil e menos estressante para professores e alunos. Os recursos investidos em melhoria, a fim de promover conforto ac?stico, ainda s?o vistos apenas como despesas e n?o como investimento em educa??o. A quest?o de pesquisa levantada ?: as salas de aula de institui??es de federais de ensino superior em Natal/RN possuem ac?stica arquitet?nica adequada? O principal objetivo deste estudo ? compatibilizar a qualidade ac?stica de salas de aulas te?ricas com diferentes caracter?sticas arquitet?nicas em institui??es federais de ensino superior em Natal/RN, a fim de propor diretrizes b?sicas para a melhoria da qualidade ac?stica. Foram apresentados par?metros ac?sticos considerados pertinentes para este tipo de pesquisa, como o Tempo de Reverbera??o (T20), o Tempo de Decaimento Inicial (EDT) e o ?ndice de Transmiss?o da Fala (STI), al?m de outros par?metros importantes para a an?lise da inteligibilidade da fala. Os procedimentos metodol?gicos consistem na pesquisa bibliogr?fica sobre o tema, bem como na aplica??o de pesquisa de campo, a fim de averiguar a real qualidade ac?stica das salas de aula estudadas e possibilitar proposi??es de poss?veis solu??es. Foram realizadas medi??es ac?sticas nas salas de aula do Instituto Federal do Rio Grande do Norte e na Universidade Federal do Rio Grande do Norte, havendo sido constatada baixa qualidade ac?stica em todos os padr?es de salas de aula. Os resultados encontrados nas medi??es ac?sticas foram comparados de acordo com os crit?rios: t?cnicas de medi??o, tempo de reverbera??o em salas arquitetonicamente iguais e tempo de reverbera??o em salas com varia??o de p?-direito. A partir dos resultados das medi??es, foram simuladas propostas de melhoramento da qualidade ac?stica das salas, encontrandose que 50% de ?rea de material absorvente no forro melhora significativamente o condicionamento ac?stico da sala para fala, havendo melhores resultados com 100% da ?rea de forro em material absorvente e distribui??o mais homog?nea dos par?metros ao longo da sala quando adicionado material absorvente em 25% da ?rea da parede posterior. De acordo com os resultados encontrados foram propostas diretrizes projetuais para as salas de aula analisadas, como a aplica??o de forro absorvente e a propor??o de forma em que h? melhor distribui??o dos par?metros ac?sticos. / Schools are places of learning in which communication is essential for the fulfillment of their function, but most Brazilian schools do not have adequate acoustic conditions. When the spoken message is not clearly heard by the students, the understanding of the speech is affected and, consequently, the learning process is impaired. Good acoustic conditions in classrooms make the learning process easier and less stressful for teachers and students. The resources invested in improvement, in order to promote acoustic comfort, are still seen only as expenses and not as investment in education. The research question raised is: do the classrooms of federal higher education institutions in Natal/RN have adequate architectural acoustics? The main objective of this study is to reconcile the acoustic quality of theoretical classrooms with different architectural characteristics in federal institutions of higher education in Natal/RN, in order to propose basic guidelines for the improvement of acoustic quality. Acoustic parameters were found for this type of research, such as Reverberation Time (T20), Initial Decision Time (EDT) and Speech Transmission Index (ITS), as well as other important controls for speech intelligibility analysis. The methodological procedures consist of the bibliographic research on the subject, as well as the application of field research, in order to ascertain a true acoustic quality of the classrooms studied and to make possible solutions proposals. Acoustic measurements were performed in the classrooms of the Federal Institute of Rio Grande do Norte and the Federal University of Rio Grande do Norte, where low acoustic quality was found in all classroom standards. The results found in the acoustic measurements were compared according to the criteria: measurement techniques, reverberation time in architecturally identical rooms and reverberation time in rooms with height variation. From the results of the measurements, we proposed simulations to improve the acoustic quality of the rooms, finding that 50% of area of absorbent material in the ceiling significantly improves the acoustic conditioning of the room for speech, with better results with 100% of the area of liner material in absorbent and more homogeneous distribution of parameters throughout the room when absorbent material is added to 25% of the posterior wall area. According to the results, design guidelines were proposed for classrooms analyzed, such as the application of absorbent ceiling and the proportion of form in which there is better distribution of acoustic parameters.

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