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Author(s): António Pedro O. Carvalho
Title: BACH, a new binaural parameter
Issue Date: 1995
Abstract: This study reports on acoustical field measurements made in a major survey of 41 Catholic churches inPortugal built in the last fourteen centuries. Binaural measurements were taken in each church using a dualchannel real time frequency analyzer to calculate the coherence values between the signals at both ears in 1/3octave frequency bands. From the coherence values a new binaural acoustical measure was developed and calledBACH (Binaural Acoustical CoHerence). Monaural acoustical measurements were also taken at severalsource/receiver locations using the impulse response method. BACH was shown to be an orthogonal parameter instatistical tests with nine other monaural acoustical measures (RT, EDT, C80, D, TS, L, BR_RT, BR_L andRASTI) and fifteen architectural parameters. Information was collected regarding the quality of music in eachchurch. ANOVA tests were performed to examine the significance of the differences among the groups of equalsubjective quality ratings. The author wanted to test the hypothesis that this new binaural acoustical measure canbe useful in estimating the general subjective quality of churches regarding music. A linear correlation coefficientnear 0.7 was found between the BACH and the subjective quality ratings that supported the stated hypothesis.
Subject: Acústica, Engenharia civil
Acoustics, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Source: 15th International Congress on Acoustics
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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