A Single Number Index to Assess Selected Acoustic Parameters in Churches with Redundant Information

• Autorzy: Kosała K.
• Języki publikacji: EN

Abstrakty

EN

The paper presents an innovative approach for the index assessment of the acous- tic properties of churches. A new formula for an approximate single number index to assess selected acoustic parameters of church interiors, such as reverberation time (RT), speech intelligibility index (RASTI) and music clarity index (C80), is presented in the paper. The formula is created by means of the Singular Value Decomposition (SVD) method. An innovative approach for calculating the weights of partial in- dices is shown by solving the problem of redundant information, i.e., the system of overdetermined linear equations, using a computed pseudoinverse matrix. The new procedures for calculating the values of three partial indices and the single number index to assess selected acoustic parameters are presented. The proposed method was verified by measurements in several selected churches.

Słowa kluczowe

EN

acoustic quality; index method; sacral objects; singular value decomposition (SVD); redundant information

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2011
• Tom: Vol. 36, No. 3
• Strony: 545--560
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr.

Twórcy

autor

Kosała K.

• AGH University of Science and Technology Department of Mechanics and Vibroacoustics Al. Mickiewicza 30, 30-059 Kraków, Poland,

Bibliografia

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