Logo PUC-Rio Logo Maxwell
ETDs @PUC-Rio
Estatística
Título: PROPAGATION OF SOUND IN TWO-DIMENSIONAL VIRTUAL ACOUSTIC ENVIRONMENTS.
Autor: SERGIO ALVARES R SOUZA MAFFRA
Colaborador(es): MARCELO GATTASS - Orientador
LUIZ HENRIQUE DE FIGUEIREDO - Coorientador
Catalogação: 16/JUL/2003 Língua(s): PORTUGUESE - BRAZIL
Tipo: TEXT Subtipo: THESIS
Notas: [pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio.
[en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio.
Referência(s): [pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3723&idi=1
[en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3723&idi=2
DOI: https://doi.org/10.17771/PUCRio.acad.3723
Resumo:
For a long time, computational simulation of acoustic phenomena has been used mainly in the design and study of the acoustic properties of concert and lecture halls. Recently, however, there is a growing interest in the use of such simulations in virtual environments in order to enhance users` immersion experience. Generally, we can say that a virtual acoustic environment must be able to accomplish two tasks: simulating the propagation of sound in an environment and reproducing audio with spatial content, that is, in a way that it allows the recognition of the direction of sound propagation. These tasks are the topic of the present dissertation. We begin with a revision of the most common algorithms for the simulation of sound propagation and, briefly, of the reproduction of audio with spatial content. We then present the implementation of a virtual acoustic environment, based on beam tracing algorithms, which simulates the propagation of sound waves in two-dimensional environments. As most of the computation is made in a pre-processing stage, the virtual acoustic environment implemented is appropriate only for spatially fixed sound sources. The propagation paths computed are made of specular reflections and of diffractions.
Descrição: Arquivo:   
COVER, ACKNOWLEDGEMENTS, RESUMO, ABSTRACT, SUMMARY AND LIST OF FIGURES PDF    
INTRODUCTION PDF    
CHAPTER 2 PDF    
CHAPTER 3 PDF    
CHAPTER 4 PDF    
CHAPTER 5 PDF    
CONCLUSION PDF    
BIBLIOGRAPHY PDF