A Symphony Hall: L'Auditori Barcelona

Abstract

This paper describes the design of the Concert Hall of Barcelona, called “L'Auditori”. The acoustical design of the project was finished in 1990 but it was built later and finally opened on 22nd March 1999. The acoustics of the concert hall have been very well received by audiences. In this manuscript, we outline several acoustic features which had to be designed using old methods because the more modern systems had not yet been developed. However, construction was delayed nine years, which meant that new computer tools were available when work was coming to an end in 1990, it allowed us to carry out an overall review of many aspects of the design, A very important issue that required years of research before we discovered the cause of the problem was that musicians could not hear themselves on stage, yet Gade's measurements of ST1 made in 2001 were comparable with those found in the best reference halls. In this paper we discuss this issue, and conclude that the musicians were correct.

Virtual Sound Field of the Roman Theatre of Malaca

“…In the C80 parameter, the absence of the hill at the rear part of the theatre supposes a perceptible increase of the parameter (of the order of 1 JND), however, in D50 the change is less perceptible, probably due to the shorter time interval for the early reflections and because it is a ratio of early energy to total energy. Both the musical clarity index and the word definition index lie in the proper range for roofed theatres, C80 > 6 dB and D50 > 0.65 [31].…”

“…The spatial dispersion is less than the EDT parameter. According to Arau [31], a factor of merit 1 arises for roofed theatres when Equation 1is verified:…”