The aesthetics of the Bayreuth Festspielhaus explained by means of acoustic measurements and simulations

D’Orazio, Dario; Cesaris, Simona De; Morandi, Federica; Garai, Massimo

doi:10.1016/j.culher.2018.03.003

Cited by 16 publications

(16 citation statements)

References 17 publications

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“…The reliability of the method used in the present study may be evaluated through the point of view of the so-called archeo-acoustics. A taxonomy of the procedures used in the previous studies [30][31][32][33][34][35][36][37][38][39][40] is shown in Table 2. Table 2.…”

Section: Methodsmentioning

confidence: 99%

The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna

2019

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In a Historical Opera House (HOH), the proscenium is the foreground part of the stage. Until the end of the 19th Century, it was extended through the cavea, being the orchestra placed at the same level of the stalls, without an orchestra pit. Soloists often moved in the proscenium when they sung, in order to increase the strength of the voice and the intelligibility of the text. The Alighieri theatre in Ravenna, designed by the Meduna brothers, the former designers of Venice's "La Fenice" theater, is chosen as a case study. During a refurbishment in 1928, the proscenium of the stage was removed in order to open the orchestra pit, which was not considered in the original design. The original design and the present one are compared by using numerical simulations. Acoustic measurements of the opera house and vibro-acoustic measurements on a wooden stage help to reach a proper calibration of both models. Results are discussed by means of ISO 3382 criteria: the proscenium increases the sound strength of the soloists but reduces the intelligibility of the text.

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Section: Methodsmentioning

confidence: 99%

The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna

2019

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“…There is little difference between the measured T(20) and T(30) RTs after the addition of the panels, both on and off the aisle, all of the RTs are below 2 s, and at the majority of frequencies, the T (20) and T(30) RTs are nearly identical. In the original room configuration, however, the T(20) and T (30) RTs show a number of striking dissimilarities. Comparison between the T(20) and T(30) RTs in the audience indicates that there is a strange behavior occurring in the 500 Hz octave band.…”

Section: Rir Reverberation Timesmentioning

confidence: 98%

“…The purpose of this study is thus to (a) refine the GA computer model and (b) to see if a more general wave-based simulation is able to better reproduce the fine features of such non-diffuse effects. The simulation results from the GA and wave-based models are compared in terms of objective parameters (T (20),T (30)) and energy decay curves. Additionally, as the aforementioned flutter echoes are not well represented by traditional room acoustic objective metrics (which assume a diffuse field), a multi-resolution wavelet analysis is employed for the comparison of flutter echoes in measurements and computer simulation results, along with spectrogram time-frequency analyses.…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence of these high compute requirements wave-based methods have seen less use over the years than geometrical approaches. On the other hand, wave-based methods tend to be highly parallelizable, and recent progress in parallel implementations [15][16][17][18][19][20], combined with steady increases in compute power from parallel hardware such as graphics processing units (GPUs), are bringing large-scale wave-based simulations to within reach of consumer hardware [21].There are a variety of acoustical spaces that have been investigated in the literature using computer modeling, including worship spaces [22][23][24][25][26][27][28][29], performance spaces [30][31][32], multi-purpose spaces [33,34], and outdoor ancient theaters [35][36][37]. Room acoustic computer modeling studies have primarily made use of available geometrical acoustics softwares [38], and relatively few have made use of wave-based methods in low-frequencies [28,29,33,36], mainly due to the aforementioned computational costs.…”

mentioning

confidence: 99%

“…There are a variety of acoustical spaces that have been investigated in the literature using computer modeling, including worship spaces [22][23][24][25][26][27][28][29], performance spaces [30][31][32], multi-purpose spaces [33,34], and outdoor ancient theaters [35][36][37]. Room acoustic computer modeling studies have primarily made use of available geometrical acoustics softwares [38], and relatively few have made use of wave-based methods in low-frequencies [28,29,33,36], mainly due to the aforementioned computational costs.…”

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confidence: 99%

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Computer Modeling of Barrel-Vaulted Sanctuary Exhibiting Flutter Echo with Comparison to Measurements

Lai

Hamilton

2020

Acoustics

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Computer modeling in acoustics allows for the prediction of acoustical defects and the evaluation of potential remediations. In this article, computer modeling is applied to the case of a barrel-vaulted sanctuary whose architectural design and construction led to severe flutter echoes along the main aisle, which was later mitigated through acoustical remediations. State-of-the-art geometrical acoustics and wave-based simulations are carried out to analyze the acoustics of this space, with a particular focus on the flutter echoes along the main aisle, before and after remediations. Multi-resolution wavelet and spectrogram analyses are carried out to isolate and characterize flutter echoes within measurements and computer-simulated room impulse responses. Comparisons of simulated responses to measurements are also made in terms of decay times and curves. Simulated room impulse responses from both geometrical acoustics and wave-based methods show evidence of flutter echoes matching measurements, to varying degrees. Time-frequency analyses isolating flutter echoes demonstrate better matches to measurements from wave-based simulated responses, at the cost of longer simulation times than geometrical acoustics simulations. This case study highlights the importance of computer modeling of acoustics in early design phases of architectural planning of worship spaces.Acoustics 2020, 2 88 can scale even more severely (e.g., to the fourth power of the frequency). As a consequence of these high compute requirements wave-based methods have seen less use over the years than geometrical approaches. On the other hand, wave-based methods tend to be highly parallelizable, and recent progress in parallel implementations [15][16][17][18][19][20], combined with steady increases in compute power from parallel hardware such as graphics processing units (GPUs), are bringing large-scale wave-based simulations to within reach of consumer hardware [21].There are a variety of acoustical spaces that have been investigated in the literature using computer modeling, including worship spaces [22][23][24][25][26][27][28][29], performance spaces [30][31][32], multi-purpose spaces [33,34], and outdoor ancient theaters [35][36][37]. Room acoustic computer modeling studies have primarily made use of available geometrical acoustics softwares [38], and relatively few have made use of wave-based methods in low-frequencies [28,29,33,36], mainly due to the aforementioned computational costs. Models of flutter echoes has been of interest for some time [39][40][41] and spaces with flutter echoes have been previously analyzed with ray models [42].This study aims to make use of GA and wave-based acoustic computer modeling in the study of acoustics of the sanctuary of Christ the King (CTK) Charismatic Episcopal Church of New Paltz, NY. Built in 2009, this church has a barrel-vaulted ceiling over the nave portion of the sanctuary, with the floor of the nave carpeted and covered with rows of upholstered chairs, except for a marble-tiled center aisle along the len...

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Development of acoustic computer simulation for performance spaces: A systematic review and meta-analysis

Wang

Kang

2022

Build. Simul.

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This article aims to review the development of acoustic computer simulation for performance spaces. The databases of Web of Science and Scopus were searched for peer-reviewed journal articles published in English between 1960 and 2021, using the keywords for “simulation”, “acoustic”, “performance space”, “measure”, and their synonyms. The inclusion criteria were as follows: (1) the searched article should be focused on the field of room acoustics (reviews were excluded); (2) a computer simulation algorithm should be used; (3) it should be clearly stated that the simulated object is a performance space; and (4) acoustic measurements should be used for comparison with the simulation. Finally, twenty studies were included. A standardised data extraction form was used to collect the modelling information, software/algorithm, indicators for comparison, and other information. The results revealed that the most used acoustic indicators were early decay time (EDT), reverberation time (T30), strength (G), and definition (D50). The accuracy of these indicators differed greatly. For non-iterative simulation, the simulation accuracies of most indicators were outside their respective just noticeable differences. Although a larger sample size was required for further validation, simulations of T30, EDT, and D50 all showed an increase in accuracy with increasing time from 1979 to 2020, except for G. In terms of frequency, the simulation was generally less accurate at lower frequencies, which occurred at T30, G, D50 and T20. However, EDT accuracy did not exhibit significant frequency sensitivity. The prediction accuracy of inter-aural cross-correlation coefficients (IACC) was even higher at low frequencies than it was at high frequencies. The average value of most indicators showed a clear systematic deviation from zero, providing hints for future algorithm improvements. Limitations and the risks of bias in this review were discussed. Finally, various types of benchmark tests were suggested for various comparison goals.

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The aesthetics of the Bayreuth Festspielhaus explained by means of acoustic measurements and simulations

Cited by 16 publications

References 17 publications

The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna

The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna

Computer Modeling of Barrel-Vaulted Sanctuary Exhibiting Flutter Echo with Comparison to Measurements

Development of acoustic computer simulation for performance spaces: A systematic review and meta-analysis

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