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Previous issue date: 2017-12-01 / Em um ambiente utilizado principalmente para apresenta??es musicais, o grau de
inteligibilidade das informa??es musicais e de outros aspectos ac?sticos ? o que possibilita a
an?lise da qualidade dos sons que s?o recebidos pelos ouvintes e, consequentemente, permite
uma avalia??o das caracter?sticas ac?sticas da sala. Essa an?lise ? realizada por meio da
avalia??o de par?metros objetivos, os quais podem ser obtidos atrav?s de t?cnicas de medi??o
e de simula??o computacional. Com o avan?o da tecnologia e o desenvolvimento de pesquisas
referentes ? ac?stica arquitet?nica ao longo dos anos, v?rios softwares de avalia??o da
qualidade ac?stica de salas foram desenvolvidos, tornando-os ferramentas essenciais para a
previs?o do comportamento do som em diversos tipos de ambientes. Este estudo tem por
objetivo avaliar, por meio de medi??o e simula??o computacional, par?metros que s?o
capazes de representar o comportamento ac?stico do Audit?rio Onofre Lopes (AOL) da
Escola de M?sica da Universidade Federal do Rio Grande do Norte (EMUFRN), no intuito de
propor diretrizes gerais de projeto para otimiza??o das caracter?sticas ac?sticas desse
ambiente. Os par?metros ac?sticos foram obtidos, primeiramente, a partir da medi??o da
resposta impulsiva da sala. Atrav?s da constru??o de um modelo digital tridimensional do
audit?rio, as caracter?sticas ac?sticas dos materiais que revestem as superf?cies internas da
sala, bem como as caracter?sticas eletroac?sticas das fontes sonoras presentes no ambiente
foram modeladas com o aux?lio de um software de simula??o computacional. Ap?s a
valida??o do modelo, realizada atrav?s da compara??o dos resultados de Tempo de
Reverbera??o (RT) obtidos nas medi??es e nas simula??es, os par?metros ac?sticos Early
Decay Time (EDT), Clareza (C80), Defini??o (D50), Tempo Central (Ts) e Speech
Transmission Index (STI) foram simulados e avaliados de acordo os valores recomendados na
literatura. Como resultado da pesquisa, os valores coletados nas medi??es e simula??es
apontaram que o AOL ? um espa?o que possui caracter?sticas ac?sticas inadequadas ? fala e
pouco eficientes quando utilizado para m?sica. Dessa forma, algumas diretrizes de
condicionamento ac?stico foram simuladas, com o objetivo de aperfei?oar a resposta temporal
ac?stica para a utiliza??o do audit?rio como um espa?o destinado a m?ltiplos usos. / In a room used mainly for musical presentations, the intelligibility levels of musical
information and other acoustic aspects allow the analysis of the quality of the sounds received
by the listeners and, consequently, allows an evaluation of room's acoustic characteristics.
This analysis is performed by the evaluation of objective parameters, which can be obtained
by measurement and computational simulation techniques. With the advancement of
technology and the development of research related to architectural acoustics over the years,
several software for evaluating acoustic room quality were developed, making them essential
tools for predicting the behavior of sound in different types of halls. The aim of this study is
to evaluate, through computer measurement and simulation, parameters that are able to
represent the acoustic behavior of the Onofre Lopes Auditorium (AOL) of the School of
Music of the Federal University of Rio Grande do Norte (EMUFRN), in order to propose
general guidelines to optimize its acoustic characteristics. These room's acoustic parameters
were obtained by measuring it impulse response. Through the construction of a threedimensional
digital model of the auditorium, the acoustic characteristics of the materials that
covers its internal surfaces, as well electroacoustic characteristics of the sound sources present
in this space were modeled with the aid of computer simulation software. After the validation
of the model, by comparing Reverberation Time (RT) results obtained in the measurements
and simulations, the acoustic parameters Early Decay Time (EDT), Clarity (C80), Definition
(D50), Center Time (Ts) and Speech Transmission Index (STI) were simulated and evaluated
according to the values recommended in the literature. As a result of this research, the values
collected in the measurements and simulations pointed out that the AOL is a space that has
inadequate acoustic characteristics to speech and may be considered inefficient when used for
music. Thus, some acoustic conditioning guidelines were simulated to improve the acoustic
temporal response to the use of the auditorium as a multipurpose hall.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24550 |
| Date | 01 December 2017 |
| Creators | Alves, Jair da Silva |
| Contributors | 21896458831, Viana, Alexandre Bezerra, 76076610425, Ara?jo, Bianca Carla Dantas de, 03144094404, Silva, Joao Bosco da, 13163191487, Oiticica, Maria L?cia Gondim da Rosa, 34115668415, Matamoros, Efrain Pantaleon |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA MEC?NICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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