Título: | PROPAGATION OF SOUND IN TWO-DIMENSIONAL VIRTUAL ACOUSTIC ENVIRONMENTS. | ||||||||||||||||||||||||||||||||||||||||
Autor: |
SERGIO ALVARES R SOUZA MAFFRA |
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Colaborador(es): |
MARCELO GATTASS - Orientador LUIZ HENRIQUE DE FIGUEIREDO - Coorientador |
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Catalogação: | 16/JUL/2003 | Língua(s): | PORTUGUESE - BRAZIL |
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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. |
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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 |
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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.
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