scholarly journals Analysis of Acoustic Comfort - Classroms Campus Santa Mônica: Case Study

2016 ◽  
Vol 6 ◽  
Author(s):  
Paulo Henrique dos Santos ◽  
Dogmar Antonio de Souza Júnior ◽  
Antonio Carlos dos Santos
Keyword(s):  
Santa Monica ◽  
Acoustic Comfort

É cada vez maior a necessidade de atender as exigências dos usuários quanto ao conforto acústico nos mais diversos tipos de edificações. Considerando as atividades desenvolvidas em salas de aula e o que representam para o futuro de uma sociedade, a preocupação com o conforto destas salas na fase de projeto deveria ser ainda maior. Este artigo tem como objetivo apresentar os resultados da análise do conforto acústico de salas de aula de dois prédios do Campus Santa Mônica da Universidade Federal de Uberlândia – UFU. Foram realizados estudos quanto a capacidade de absorção dos materiais e o tempo de reverberação de seis salas de aula, sendo três em cada prédio. Os resultados obtidos na análise foram comparados com os parâmetros normativos das normas ANSI S12.60:2010 e ABNT NBR 12179:1992, a fim de verificar se as salas apresentavam condições adequadas para as atividades de ensino-aprendizagem. Para tanto, após coleta de dados em campo foi determinado analiticamente os parâmetros de absorção sonora e tempo de reverberação. Foi constatado nesta condição as salas atendem as exigências normativas.

Acoustic comfort evaluation for a conference room: A case study

2017 ◽  
Vol 118 ◽  
pp. 39-49 ◽  
Author(s):  
Abdelghani Gramez ◽  
Fouad Boubenider
Keyword(s):  
Conference Room ◽  
Comfort Evaluation ◽  
Acoustic Comfort

USE OF CORK SHEETS FOR ROOM ACOUSTIC CORRECTION

2020 ◽  
Vol 15 (2) ◽  
pp. 45-55
Author(s):  
Gino Iannace ◽  
Giuseppe Ciaburro ◽  
Luigi Guerriero ◽  
Amelia Trematerra
Keyword(s):  
Sound Absorption ◽  
Rigid Wall ◽  
Virtual Model ◽  
Rear Wall ◽  
Acoustic Characteristics ◽  
Architectural Acoustics ◽  
Acoustic Comfort ◽  
Useful Life ◽  
Correction System

ABSTRACT Cork is a sustainable material and at the end of its useful life it can be disposed of into the environment without causing damage. This paper analyzes an acoustic correction system made of cork sheets mounted at an opportune distance from the walls inside a room. The cork sheets have a thickness equal to 1.5 mm. The sound absorption coefficients of the cork sheets were initially evaluated by mounting samples inside an impedance tube, then creating a back cavity at a suitable distance from a rigid wall. The distances considered were: 3, 5, 10 and 15 cm. A room used as an office with a volume of about 90 m3 and plastered walls was considered as a case-study. In this type of environment, suitable acoustic comfort conditions are required. The acoustic characteristics were analyzed through a virtual model with an architectural acoustics software in an empty room and then with the introduction of sound-absorbing cork sheets. Measurements of the acoustic characteristics of the empty room were taken and subsequently with the walls lined with cork panels mounted at a distance of 3.0 cm from the rigid rear wall. A configuration was analyzed, in line with what was carried out in the numerical model, covering a surface of 5m2 of the room. The results of the numerical simulations as well as the experimental measurements are discussed.

A virtual orchestra to qualify the acoustics of historical opera houses

2020 ◽  
Vol 27 (3) ◽  
pp. 235-252 ◽  
Author(s):  
Dario D’Orazio ◽  
Giulia Fratoni ◽  
Anna Rovigatti ◽  
Massimo Garai
Keyword(s):  
18Th Century ◽  
Public Spaces ◽  
Early Age ◽  
Impulse Responses ◽  
Sound Sources ◽  
Social Division ◽  
Subjective Preference ◽  
Acoustic Comfort ◽  
Opera Houses

Italian Historical Opera Houses are private or public spaces built around a cavea, with tiers of boxes on the surrounding walls. At the early age – from 16th to 18th century – boxes were private properties of the richest class, typically the financial responsible of the whole building. The stalls hosted the middle class, that gradually increased its social position and for this reason the wooden seats were progressively replaced by chairs. The gallery was reserved to lower classes. Does this social division correspond to a different acoustic comfort? The present work tries to answer this question using subjective preference models provided by scholars. With this aim, the room criteria defined by different authors and in distinct times are lined up with the ISO 3382 standards and analysed depending on the acoustic peculiarities of an Italian Historical Opera House selected as case study. Calibrated impulse responses were handled through the numerical simulations of a whole orchestra of virtual sound sources in the pit.

Acoustic comfort in a worship space made of cross-laminated timber

2019 ◽  
Vol 26 (2) ◽  
pp. 121-138 ◽  
Author(s):  
Giulia Fratoni ◽  
Dario D’Orazio ◽  
Luca Barbaresi
Keyword(s):  
Speech Intelligibility ◽  
Spatial Perception ◽  
Sound Field ◽  
Design Development ◽  
Good Opportunity ◽  
Cross Laminated Timber ◽  
Worship Space ◽  
Acoustic Comfort ◽  
Sustainable Materials

The construction of a new worship space in cross-laminated timber provides a good opportunity to include acoustic needs in the whole design development. The surface porosity and the lightweight of wooden elements may be carefully considered in order to improve the intelligibility of priests’ voice. In this work, a practical approach for obtaining a global acoustic comfort using sustainable materials is provided, using geometrical acoustic simulations. Material properties and architectural geometries were taken into account in order to evaluate subjective reverberation, speech intelligibility, and spatial perception over the whole audience. Results show how the sound energy distribution in the case study follows the sound field models proposed by scholars and how the ceiling shape—inspired by industrial sheds—contributes to the acoustic comfort of the faithfuls.

Origins of lipid biomarkers in Santa Monica Basin surface sediment: a case study using compound-specific Δ 14 C analysis

2001 ◽  
Vol 65 (18) ◽  
pp. 3123-3137 ◽  
Author(s):  
A. Pearson ◽  
A.P. McNichol ◽  
B.C. Benitez-Nelson ◽  
J.M. Hayes ◽  
T.I. Eglinton
Keyword(s):  
Surface Sediment ◽  
Lipid Biomarkers ◽  
Basin Surface ◽  
Santa Monica ◽  
Santa Monica Basin

scholarly journals The Sound of Inclusion: A Case Study on Acoustic Comfort for All

2008 ◽  
pp. 75-84
Author(s):  
A. Heylighen ◽  
G. Vermeir ◽  
M. Rychtáriková
Keyword(s):  
Acoustic Comfort

scholarly journals The Application Of Living Walls For Acoustic Comfort

2021 ◽  
Author(s):  
Magdaleen H Bahour
Keyword(s):  
Performance Criteria ◽  
Interior Space ◽  
Acoustic Performance ◽  
Environment Quality ◽  
Indoor Environment Quality ◽  
Acoustic Comfort ◽  
Indoor Spaces ◽  
Passive Strategy

Interior space comfort encompasses design performance criteria beyond the thermal qualities of the space. The acoustic performance has shown to be an essential factor for the productivity levels of the users of the space, and is essential for overall indoor environment quality to be maintained. This research focuses on the potential of integrating living walls within indoor spaces, such as atriums and halls, to provide a passive strategy for noise insulation. The procedure is conducted through a series of acoustic measurements and calculations to determine the sound absorption coefficient of living walls in-situ. A case study space is used to evaluate the integration of living walls to provide acoustic comfort.

Acoustical Comfort in Classrooms: Case Study at the University of Brasília

2018 ◽  
Author(s):  
Clarice C. Daga ◽  
Hetty N. C. C. Lobo ◽  
José A. P. C. Lobo ◽  
Carlos E. L. Melo
Keyword(s):  
Background Noise ◽  
Speech Intelligibility ◽  
Learning Activity ◽  
Sound Perception ◽  
Acoustic Comfort ◽  
Two Parameters ◽  
Teaching Learning ◽  
The University ◽  
Acoustic Conditions

The acoustic conditions in school spaces are fundamental for the success of the learning process. This article aims to present the results of acoustic comfort by the analytical method of 9 classrooms with different geometric characteristics of the University of Brasília. In classrooms the background noise limits are 40 to 50dBA and considering that the teacher’s voice reaches a certain 65 decibels we can highlight that it can be heard clearly by the students. However in an environment with a lot of reverberation of sounds the teacher will have to exert more effort to be understood. The sound perception in a room depends on the intensity and temporal relationship between the direct sound and the indirect sound reflected by the walls of the room, therefore, in the present study were verified two parameters namely the reverberation time and speech intelligibility. The results obtained were compared with the normative parameters of ANSI S12.60: 2010 and it was verified that all rooms are not suitable for teaching-learning activity. To guarantee an environment with better conditions of concentration and learning for the students, acoustic coverings were suggested in order to fit the normative limits.

EVALUATION OF USER COMFORT IN TUNNEL FORMWORK HOUSING AREAS: Izmir as a Case Study

2014 ◽  
Vol 8 (1) ◽  
pp. 78
Author(s):  
Dilek Tezgelen ◽  
Ozgul Yilmaz Karaman
Keyword(s):  
General Information ◽  
Visual Comfort ◽  
City Center ◽  
Design Quality ◽  
Interior Space ◽  
The People ◽  
Acoustic Comfort ◽  
House Production ◽  
The City

Houses are spaces where we spend most of our lives, meeting our accommodation needs and reflecting us and our personality. The tunnel formwork systems are effective in house production. They appeal to the people in different social status varying from high-incomers to low-incomers from the city center to the peripheries of city. Based on such determination, the satisfaction of house user set forth the main line of work. For this purpose, six parameters have been ascertained to determine the user’s comfort, by interrogating the comfort of interior space in the houses: The thermal comfort, visual comfort, acoustic comfort, humidity and moisture control and design quality. With the purpose of interrogating the user’s satisfaction, four mass housing areas constructed with tunnel formwork system in İzmir have been investigated. These are: Gaziemir Emlak Bankası Houses, TOKI Uzundere Houses, Mavişehir Stage I and Mavişehir Soyak Houses. After providing general information about all these mass houses, the surveys applied to the users have been evaluated. 

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