Proceedings of the 10th Convention of the
European Acoustics Association
Forum Acusticum 2023


Politecnico di Torino
Torino, Italy
September 11 - 15, 2023





Session: A12-11: New trends in auditorium design - Part I
Date: Wednesday 13 September 2023
Time: 11:40 - 12:00
Title: Correction of a Strong Seat-Dip In the Teatro Argentino of La Plata in Argentina
Author(s): G. Basso, Universidad Nacional de La Plata, CALLE 5 84, NÂș 84, 1900 La Plata, Argentina
Pages: 2595-2598
DOI: https://www.doi.org/10.61782/fa.2023.1058
PDF: https://dael.euracoustics.org/confs/fa2023/data/articles/001058.pdf
Conference proceedings
Abstract

The Teatro Argentino de la Plata was inaugurated in 1999, and the acoustic quality of the Ginastera Hall received various unfavourable comments from musicians, critics and the general audience. The lack of bass frequencies, low sensation of envelopment and a flat, distant sound were highlighted. After carrying out a lot of acoustical measurements and developing a digital model of the Hall, the analysis showed, on the main floor level, a deficit of acoustical energy in the first 100ms after the direct sound, insufficient lateral energy, and a strong seat-dip. To correct those problems a new acoustical canopy, made with a distributed array of rectangular panels, was placed over the pit. The situation improved substantially, but there was still a minor seat-dip in the stalls. When a new restauration was undertaken in 2016, which included the replacement of the seats in the stalls, it was seen as an opportunity to fix the residual seat-dip problem. This paper briefly describes the action of the new canopy and the criteria for choosing the new seat model and the acoustic measurements taken before and after placing the canopy and replacing the seats.