Sound diffusion design process using scale models of a concert hall and acoustic parameters

2018 ◽  
Vol 144 (3) ◽  
pp. 1690-1690
Author(s):  
Hyun In Jo ◽  
Hyung Suk Jang ◽  
Jin Yong Jeon
Keyword(s):  
Design Process ◽  
Acoustic Parameters ◽  
Concert Hall ◽  
Scale Models

scholarly journals How orchestra members influence stage acoustic parameters on five different concert hall stages and orchestra pits

2016 ◽  
Vol 140 (6) ◽  
pp. 4437-4448 ◽  
Author(s):  
R. H. C. Wenmaekers ◽  
C. C. J. M. Hak ◽  
M. C. J. Hornikx
Keyword(s):  
Acoustic Parameters ◽  
Concert Hall

Scale Model Investigations of Diffuser Application Strategies for Acoustical Design of Performance Venues

2011 ◽  
Vol 97 (5) ◽  
pp. 791-799 ◽  
Author(s):  
Yong Hee Kim ◽  
Jae Ho Kim ◽  
Jin Yong Jeon
Keyword(s):  
Frontal Area ◽  
Scale Model ◽  
Acoustical Parameters ◽  
Concert Hall ◽  
Scale Models ◽  
Lateral Walls

This work investigates the effects of diffusive surfaces on concert hall acoustics using scale models with regard to hall shape and diffuser location. Two simple 1:50 scale models (shoebox and fan-shaped) were produced to measure the RT and SPL, which were decreased by wall diffusers in both hall shapes. In the shoebox hall, SPL was increased especially in the frontal area but was decreased in the rear area due to redirection of the second reflections by the opposite lateral walls, whereas SPL was decreased in both the frontal and rear area in the fan-shaped hall. For in-depth investigation of diffuser location and profile, three shoebox model halls were reproduced: a 1:50 symphony hall, a 1:25 chamber hall and a 1:25 theater. Minimal reductions in RT and LL and decreased spatial deviation in acoustical parameters were established as criteria to determine the effective diffuser location. The halves of the lateral walls closest to the stage were found to be the most effective areas for diffuser installation. Additionally, large and sparse diffuser profiles usually provided better acoustical results.

scholarly journals Listeners Sensitivity to Different Locations of Diffusive Surfaces in Performance Spaces: The Case of a Shoebox Concert Hall

2020 ◽  
Vol 10 (12) ◽  
pp. 4370
Author(s):  
Louena Shtrepi ◽  
Sonja Di Blasio ◽  
Arianna Astolfi
Keyword(s):  
Reference Conditions ◽  
Design Parameters ◽  
Acoustic Parameters ◽  
Sound Perception ◽  
Concert Hall ◽  
Acoustic Design ◽  
Rear Part ◽  
Concert Halls ◽  
Surface Location ◽  
Omnidirectional Microphones

Diffusive surfaces are considered as one of the most challenging aspects to deal with in the acoustic design of concert halls. However, the acoustic effects that these surface locations have on the objective acoustic parameters and on sound perception have not yet been fully understood. Therefore, the effects of these surfaces on the acoustic design parameters have been investigated in a real shoebox concert hall with variable acoustics (Espace de Projection, IRCAM, Paris, France). Acoustic measurements have been carried out in six hall configurations by varying the location of the diffusive surfaces over the front, mid, and rear part of the lateral walls, while the other surfaces have been maintained absorptive or reflective. Moreover, two reference conditions, that is, fully absorptive and reflective boundaries of the hall have been tested. Measurements have been carried out at different positions in the hall, using an artificial head and an array of omnidirectional microphones. Conventional ISO 3382 objective acoustic parameters have been evaluated in all conditions. The results showed that the values of these parameters do not vary significantly with the diffusive surface location. Moreover, a subjective investigation performed by using the ABX method with auralizations at two listening positions revealed that listeners are not sensitive to the diffusive surface location variations even when front-rear asymmetric conditions are compared. However, some of them reported perceived differences relying on reverberance, coloration, and spaciousness.

Modeling and Simulation of Gamelan Bali Concert Hall Based on Objective Acoustic Parameters

2013 ◽  
Author(s):  
Ni Putu Amanda Nitidara ◽  
I G. Nyoman Merthayasa ◽  
Joko Sarwono
Keyword(s):  
Modeling And Simulation ◽  
Acoustic Parameters ◽  
Concert Hall

Concert hall: acoustic design comparing analytical results and ray tracing

2021 ◽  
Vol 263 (3) ◽  
pp. 3538-3544
Author(s):  
Karina Sá ◽  
Raquel Rossatto Rocha ◽  
Bárbara Fengler
Keyword(s):  
Ray Tracing ◽  
Reverberation Time ◽  
Acoustic Parameters ◽  
Concert Hall ◽  
Acoustic Design ◽  
Analytical Results ◽  
Strategic Location ◽  
Acoustic Quality ◽  
Plan Study

With the intention of designing architecture for music and inspired by music, the J.C. Martins Concert Hall was created with 1008 seats and an approximate volume of 49400 ft³. Among all the architectural aspects considered, such as strategic location analyzed from the mass plan, study of volumetries, acoustics is the highlight due to its importance and complexity of the project. The Concert Hall is the object of the present study, the purpose of the article is to compare the simulated results in the EASE software with the analytical results of the reverberation time calculated by the Sabine and Eyering equations for the Concert Hall. Acoustic parameters such as reverberation time, clarity, among others, were simulated to verify the acoustic quality of the room in question. With that, it was possible to analyze and discuss the limitations of the analytical method and the simulations. Even so, the results were satisfactory to reach the adequated indexes of the acoustic parameters.

scholarly journals Acoustic Design of a Classical Concert Hall and Evaluation of its Acoustic Performance – A Case Study

2018 ◽  
Author(s):  
Kwangbok Jeong ◽  
Taehoon Hong ◽  
Sung Hoon Kim ◽  
Jimin Kim ◽  
Sangyoub Lee
Keyword(s):  
South Korea ◽  
Simulation Modeling ◽  
Decision Makers ◽  
Reverberation Time ◽  
Acoustic Parameters ◽  
Concert Hall ◽  
Acoustic Performance ◽  
Acoustic Design ◽  
Acoustic Simulation

This study aims at an acoustic design of the classical concert hall and evaluation of the acoustic performance. In terms of three acoustic parameters (i.e., reverberation time (RT), clarity (C80), and lateral fraction (LF)), this study performed acoustic simulation modeling and site measurement with the K Art Hall located in South Korea as a case study. First, in order to meet the acoustic performance of the K Art Hall (target RT: 1.4~1.7 seconds, target C80: -2dB or more +2dB or less, and target LF: 10~35%), the finish materials and shape of the room as an interior acoustic design were determined. Second, the average values of the RT, C80, and LF using the acoustic simulation modeling were estimated at 1.4 second, 1.2~1.6 dB, and 29%, respectively. Third, the average values of the RT, C80, and LF through site measuring were measured at 1.5~1.64 second, 0.07~1.31dB, and 22.22~31.37%, respectively. Thus, the results of both the acoustic simulation modeling and site measuring were analyzed so as to satisfy the target acoustic performance. The results of this study will help the decision-makers (i.e., owner, construction managers, etc.) to plan the classical concert hall in terms of the RT, C80, and LF.

Modeling and simulation of Gamelan Bali concert hall based on objective acoustic parameters

2013 ◽  
Vol 133 (5) ◽  
pp. 3403-3403
Author(s):  
Ni Putu Amanda Nitidara ◽  
I G. Nyoman Merthayasa ◽  
Joko Sarwono
Keyword(s):  
Modeling And Simulation ◽  
Acoustic Parameters ◽  
Concert Hall

3-Axis CNC Milling in Architectural Design

2005 ◽  
Vol 3 (2) ◽  
pp. 161-180 ◽  
Author(s):  
Robert Aitcheson ◽  
Jonathan Friedman ◽  
Thomas Seebohm
Keyword(s):  
Rapid Prototyping ◽  
Case Studies ◽  
Design Process ◽  
Architectural Design ◽  
Cnc Milling ◽  
Physical Scale ◽  
Scale Models ◽  
Different Types ◽  
Primary Focus ◽  
The Way

Physical scale models still have a role in architectural design. 3-axis CNC milling provides one way of making scale models both for study purposes and for presentation in durable materials such as wood. We present some types of scale models, the methods for creating them and the place in the design process that scale models occupy. We provide an overview of CNC milling procedures and issues and we describe the process of how one can creatively develop appropriate methods for milling different types of scale models and materials. Two case studies are presented with which we hope to convey not only the range of possible models that can be machined but also the way one creatively explores to arrive at appropriate milling strategies. Where apposite, we compare 3-axis CNC milling to newer technologies used for rapid prototyping but rapid prototyping is not a primary focus.

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