Acoustical evaluation by impulsive technique of eight rooms used for theatrical presentation in the city of Campinas, SP / Avaliação acustica de oito salas destinadas a apresentações teatrais da cidade de Campinas, SP, atraves da tecnica impulsiva

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The architectural acoustics is an issue related to environmental comfort and, as such, of great importance for the quality of the space, concerning the satisfaction level of its user. Among the wide range of edification typologies, the theaters excel for their acoustic quality, since they are destined essentially for the transmission of spoken sound messages or songs. Paradoxically, the available thematic literature in Brazil is practically inexistent, which has become an enormous hindrance to those who have dedicated themselves to the study of the architectural acoustics, in obtaining information on its discipline. The main purpose of this project is to evaluate the acoustic comfort of eight rooms directed to theatrical presentations in Campinas city through elements of architectural project and of acoustic parameters which influence the quality of those spaces for speech situations. For this purpose, the impulsive technique was used for the acoustic analysis of these rooms. The acoustic evaluation comes from the analyses of the data of sound pressure level (SPL) in dB(A), sound spectrum, reverberation time (RT), clarity (C50), definition (D80), central time (Ts), early decay time (EDT) and speech transmission index (STI). The spectrum results make possible the predictions on speech interference level (SIL) and also the classification of the rooms according to noise criterion curves (NC). The results were appraised through the tabulated data of the evaluations, obtained through the impulsive technique and of the architectural elements of each room. As result, was concluded that all appraised rooms could guarantee an efficient sound transmission mainly in the medium and high frequencies, being the main noise source, the interior sources to the edifications. The form of presentation which results of each theater represents a method base for the acoustic analysis procedure. The crossing between the acoustic analysis information and the constructive features collaborates to demonstrate the importance of linkage between both architectural and acoustic projects

ASSUNTO(S)

arquitetura de teatros acustica architectural acoustics theatre acoustics acoustic performance acustica arquitetonica impulsive technique som - mediação

ACESSO AO ARTIGO

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