Acoustic analysis of an exhibition gallery based on speech intelligibility
DOI:
https://doi.org/10.46421/encac.v17i1.3976Keywords:
museum acoustics, speech transmission index, background noiseAbstract
The activities developed in a building will guide the acoustic comfort needs program. To the designer, the technical knowledge of these variables must be aligned with the manipulation in the project so that the desired acoustic comfort is achieved. Museums are spaces in which the visitors' experience is learning and concentration. Acoustic comfort, therefore, is an essential item. This paper evaluates speech intelligibility in museums and its relationship with residual noise and reverberation time. The Speech Transmission Index (STI) was studied inside a gallery of the Pinacoteca of São Paulo, following the instructions of ISO 3382-3:2022, which follows the methodology of IEC 60268-16:2020. The in situ tests were performed from an omnidirectional source emitting a signal with the power of a person speaking in normal effort. Given these buildings' educational role, working on intelligibility in museums is essential. The results show that it is necessary to reflect on the issue of acoustic comfort in museums and relevant parameters for these buildings, which will consequently be related to design issues.
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