The Importance of Acoustic Quality in Classroom

2014 ◽  
Vol 70 (7) ◽  
Author(s):  
S. Sarlati ◽  
Z. Haron ◽  
K. Yahya ◽  
N. Darus ◽  
N. Dimon ◽  
...  
Keyword(s):  
Emotional Disorders ◽  
Learning Process ◽  
Speech Intelligibility ◽  
Theoretical Calculations ◽  
Self Report ◽  
Reverberation Time ◽  
Concrete Wall ◽  
Effective Learning ◽  
Acoustic Quality

An effective learning process in a classroom with good speech intelligibility requires good acoustic quality. Low acoustic quality may cause frequent speech repetition and consequently leads to several emotional disorders among the students. The purpose of this study is to improve the acoustic quality of the classroom for a better learning process. Two classrooms at Faculty of Civil Engineering, Universiti Teknologi Malaysia have been selected for this study. Reverberation time is the most important factor in acoustics, which was determined using theoretical calculations and simulations. A Dass-21 of self-report questionnaires was used to measure the levels of depression, anxiety, and stress among the students.  The results showed that reverberation times of the classrooms were more than 1 second and 34% of the students have suffered from severe and extreme anxiety. The acoustic quality can be improved through the replacement of a painted concrete wall with high sound absorption material made of kenaf fiber in order to ensure reverberation time does not exceed the limit.

scholarly journals Students’ Intuitive and Analytical Thinking in the Mathematics Study through the Integration of STAD and Environmental Islamic Jurisprudence (Fiqh)

2020 ◽  
Vol 11 (1) ◽  
pp. 49-60
Author(s):  
Abdillah Abdillah ◽  
Ajeng Gelora Mastuti ◽  
Muhammad Rijal ◽  
Muhajir Abd. Rahman
Keyword(s):  
Learning Process ◽  
Mathematical Problem ◽  
Three Dimensional ◽  
Point Of View ◽  
Effective Learning ◽  
Intuitive Thinking ◽  
Analytical Thinking ◽  
Research Problems ◽  
Interest And Motivation

The success of a learning process depends on the teacher’s mastery of materials, strategies, and media. Teachers need to possess high creativity to maintain their students’ interest and motivation in learning. The integration of effective learning models and appropriate media, such as using plastic waste as realia, can be one of the alternatives to improve the quality of learning. This study also aimed to examine students' awareness of environmental issues. The quantitative and qualitative data of the study were collected simultaneously to answer the research problems. Interviews were conducted during the implementation of the learning process and quizzes. A pre-experimental one-shot case study design was employed to gather the quantitative data which were then analyzed descriptively. The results of the current study showed that the students' intuitive thinking started to develop in phase 3, where they were asked to identify the type of plastic glass they were holding. Phase 4 that allowed the students to separate parts constructing the glass, determine the name of each part, and set a point of view or the purpose underlying the material presented was the phase where the students performed an analytical thinking process. In phase 5, the students were allowed to solve a mathematical problem using analytical thinking. The interaction between students' intuitive and analytical thinking shown in the identification and labeling of each type of three-dimensional form will be discussed in this article  

scholarly journals Penilaian Kualitas Akustik Masjid Raudhaturrahman Padang Tiji Menggunakan Simulasi Ecotect

2020 ◽  
Vol 2 (2) ◽  
pp. 357-367
Author(s):  
Yulida Yani
Keyword(s):  
Background Noise ◽  
Simulation Method ◽  
Reverberation Time ◽  
Religious Rituals ◽  
Religious Significance ◽  
Acoustic Quality ◽  
Unique Shape ◽  
High Degree

Mosque is a place of worship for Moslems. It has profound religious significance for the community; it is important that people feel serenity therein. In addition, they need to be able to hear sounds clearly so that they can perform their religious rituals like prayers smoothly and it is also crucial for them to hear speeches with a high degree of intelligibility. This study assessed the acoustic quality of Raudhaturrahman prayer's room, having a unique shape with the dome ceiling covering all dimensions of the building.  This study aims at finding the condition, causes, and improving the acoustic quality to meet the prayer's room acoustic needs.  This study specifically focused on calculating the background noise and reverberation time using the Ecotect Simulation method.  The simulation result demonstrates that the calculation of reverberation time (RT) and the measurement of background noise have not met the desired standard. This study found that the value for RT with occupancy 0%, 50%, 100% is 18, 29s, 7, the 80s, and 4, 71s.  In addition, the result of the background noise is 60 dB.  In conclusion, the acoustic of the Raudhaturrahmah mosque prayer's room is of inferior quality since it does not meet the standard of reverberation time (RT) and background noise for the speech purpose of the room.

Design and simulation of acoustics for the home theatre

2021 ◽  
Vol 263 (4) ◽  
pp. 2052-2057
Author(s):  
Liying Zhu ◽  
Junjuan Zhao ◽  
Xianhui Li ◽  
Bin Zhang ◽  
Yueyue Wang ◽  
...  
Keyword(s):  
Normal Modes ◽  
Low Frequency ◽  
Sound Quality ◽  
Reverberation Time ◽  
Acoustic Design ◽  
Room Size ◽  
Sound Image ◽  
Acoustic Quality ◽  
Natural Resonance Frequency

As a typical acoustics room, the sound quality of home theatre is an important standard to evaluate its design. Qualified acoustics design is the guarantee of good sound quality. The volume of home theatre is generally small, so the room size is similar to the low-frequency wavelength. Then the resonance will occur when the excitation of the sound source frequency acts on the natural resonance frequency of the room. At the same time, the secondary reflection of the room also interferes the direct sound emitted by the speaker, thus destroying the sound image. In order to solve the above problems, this paper took a home theatre as an example, analyzed the normal modes of the room by the theory of wave acoustics, and then made an acoustics design and simulation. The simulation results showed that the reverberation time was up to the relevant standards and the room acoustic quality environment was improved obviously after the acoustic design.

scholarly journals PEMBUATAN PERTANYAAN AWAL PADA KEGIATAN PRABACA UNTUK MENINGKATKAN KEMAMPUAN MEMBACA INTENSIF

Diksi ◽  
2015 ◽  
Vol 17 (1) ◽  
Author(s):  
Sumarwati ◽  
Purwadi
Keyword(s):  
Action Research ◽  
Learning Process ◽  
Research Study ◽  
Effective Learning ◽  
Learning Procedure ◽  
Action Research Study ◽  
Intensive Reading ◽  
Reading Activities ◽  
Answering Questions

This study aims to improve the quality of the process and product ofintensive reading learning through the use of pre-questions in pre-readingactivities. This study was an action research study conducted in three cycles. Theparticipants were Year VIII students of Class C of SMP Penda Mojogedang,Karanganyar Regency. The results showed that there was an improvement in thepercentage of the students capable of formulating pre-questions, carrying outintensive reading activities appropriately, answering questions correctly with apercentage of 70% at the minimum, and showing active and motivated attitudesduring the learning process. The effective learning procedure was as follows. Thestudents browsed the text, formulated pre-questions with question words 5W +1H, memorized the pre-questions, read the text intensively to find the answers tothe questions, and formulate the answers orally and in writing.Keywords: intensive reading, pre-reading, pre-question

scholarly journals REFLECTION AS A WAY TO FORM THE LEARNING COMPETENCE OF FUTURE PRE-SCHOOL TEACHERS

2021 ◽  
Vol 2 ◽  
pp. 699-714
Author(s):  
Algimantas Bagdonas ◽  
Sigita Sauleniene
Keyword(s):  
Learning Process ◽  
Relevant Information ◽  
Education Quality ◽  
Effective Learning ◽  
Teachers And Students ◽  
Study Process ◽  
Learning Competence ◽  
Education Process ◽  
Research Analysis

Problem of the research: what reflective technic strategies do the teachers use in their work in order to achieve a quality of teaching and which of them they recommend to their students for learning; what reflections do the students use? Aim of the research: to find out how the students use the reflective methods in the learning process, when improving their learning and what approach to the learning in the long-life perspective is. Objectives of the research: to reason the importance of reflection in the education process. To determine the students’ and teachers’ approach to the usage of reflection in the education process. Methods of research: analysis of documents and scientific literature, content analysis, written survey. The research has shown: The teachers and students positively evaluate the usage of the reflection method in their activity. Reflection is a good device for seeking of education quality. During this process the students overtake the teachers’ experience, develop their competences by getting the consultations. During the consultations the teachers give relevant information about the usage of the most effective learning methods in the study process. The students actively use some of the reflection types, most of which are rarely used. This indicates that in the study process not all the possibilities that could improve the learning process are used.

scholarly journals THE INFLUENCE OF FORM AND MATERIALS ON THE PROPER ACOUSTIC FUNCTION OF THEATRICAL PERFORMANCES AND MUSIC CONCERTS AT GEDUNG KESENIAN IN JAKARTA

2017 ◽  
Vol 1 (1) ◽  
pp. 77-93
Author(s):  
Susanti Mega
Keyword(s):  
Specific Activity ◽  
Reverberation Time ◽  
Sound Control ◽  
The Arts ◽  
Acoustic Quality ◽  
Volume Level ◽  
Theatrical Performances ◽  
Materials Used ◽  
The Right

Abstract- A given space requires a specific design for it to function in the best possible way. Many aspects need to be taken into consideration, and the same principle applies to an auditorium. Its space requires proper handling of the right acoustics to optimize the activities to be held there, among others space employed for the purpose of staging theatrical performances and concerts. Ideally speaking, these activities must prioritize the use of natural (purely acoustic) sound without resorting to an electric amplifier. Therefore, an appropriate acoustic design of the space to be used is of the utmost necessity. Each of these spaces has its own criteria to optimize the activities that are held there. To examine the acoustic quality of a given space, there are several prerequisites that must be fulfilled, starting from the form and materials used, the sound’s volume level, sound distribution, reverberation time, acoustic flaws or shortcomings and noise reduction or sound control. Using the explorative method and post-performance evaluation, this research study investigates the capability of the Arts Building called Gedung Kesenian in Jakarta to accommodate two different activities, both from the angle of the specific activity and the prerequisites for the space used. Gedung Kesenian Jakarta has attempted to surmount the problem of echo/reverb that is different for the theatrical and musical performances. However, the too widely diverging values have prompted the need for adding portable elements that are passive in nature in order to maximize the sound reflection, evenness of sound distribution, reverb time as well as dealing with the problem of the echoing sound area, referred to as “shadow sound”.Keywords: acoustic suitability, acoustics of theater space, acoustics of concert space, reverberation time 

scholarly journals Acoustic quality assessment in a classroom through simulations and measurements

2021 ◽  
Vol 9 (72) ◽  
Author(s):  
Eriberto Oliveira do Nascimento ◽  
Paulo Henrique Trombetta Zannin
Keyword(s):  
Background Noise ◽  
Speech Intelligibility ◽  
Reverberation Time ◽  
Vocal Health ◽  
Quality Requirements ◽  
Transmission Index ◽  
Speech Transmission ◽  
Acoustic Quality ◽  
Acoustic Comfort ◽  
Minimum Requirements

The acoustic quality in a classroom directly impacts the educational relationship between the student and the teacher, reducing speech intelligibility. In addition, inadequate acoustic comfort burdens the vocal health of teachers. This study evaluated a classroom at the Federal University of Paraná, Campus Centro Politécnico, to verify its acoustic quality. The measurements of the acoustics descriptors: Reverberation Time (RT), Definition (D50), Central Time (Ts), Early Decay Time (EDT) were performed according to the ISO 3382-2 standard, concerning Noise Curves (NC) and Background Noise (BGN) these were evaluated by the  NBR 10152 and S12.2 standards. The Speech Transmission Index (STI) was measured according to IEC 60268-16 and evaluated according to ISO 9921. The useful-detrimental ratio (U50) and the other descriptors were simulated in the ODEON software version 11. Thus, the results showed that the evaluated room did not meet the minimum requirements in terms of acoustic quality, for the descriptors RT, STI, Ts, D50, RF, and NC. Simultaneously, the RT and STI were also outside the limits established by the German and Finnish standards. Therefore, it is concluded that the evaluated classroom did not reach the minimum acoustic quality requirements.

Effect of iDu (iLearning Education) on Lecturer Performance in the Lecture Process

2018 ◽  
Vol 2 (2) ◽  
pp. 140-148
Author(s):  
Untung Rahardja ◽  
Qurotul Aini ◽  
Alfiah Khoirunisa
Keyword(s):  
Learning Process ◽  
Learning Experiences ◽  
Learning Goals ◽  
Learning Methods ◽  
Effective Learning ◽  
The World ◽  
Highly Effective ◽  
To Come ◽  
E Mail

All fields have been supported by technology, especially in the world of education in theteaching and learning process to determine the quality of graduates of a university. In theworld of education Raharja College has implemented iLearning learning methods to achievelearning goals. Students are given learning experiences using the iLearning method which isthe learning process using the Ten Pillar IT iLearning (TPI) media. But the learning processis not working properly and is still using all the paper-based nuances such as learningmethods in general, of course it is considered to be ineffective and efficient. Therefore,nowadays to achieve highly effective learning goals so that the Learning ManagementSystem (LMS) is implemented using iDu where lecturers can provide assignments onlineanytime and anywhere easily that can convey information online, i.e. on the mediaapplication iDu via e-mail Rinfo. So that with the delivery of information via E-mail Rinfo canbe done anywhere and anytime without having to come to campus which of course has aninfluence on the performance of lecturers in giving assessments to students, besides that theinformation delivered is more comprehensive and precise to students not limited by spaceand time.

scholarly journals OPTIMIZATION OF FACILITIES AND INFRASTRUCTURE MANAGEMENT IN IMPROVING THE QUALITY OF LEARNING

2021 ◽  
Vol 28 (1) ◽  
pp. 30
Author(s):  
Nurafni Siregar ◽  
Aziza S
Keyword(s):  
Learning Process ◽  
School Environment ◽  
Educational Institution ◽  
School Facilities ◽  
School Community ◽  
Professional Services ◽  
Infrastructure Management ◽  
Effective Learning ◽  
Quality Of Learning

<p>Infrastructure is a standard of education considered and provided by every educational institution, because of complete facilities and infrastructure are a support for the learning process in an educational institution. Therefore, every educational institution must have feasible and useful in order to support the learning process. Effective learning is supported by complete facilities and infrastructure. Every school community should maintain and maintain existing facilities and infrastructure and also optimize the management to create durable school facilities and well maintained. The well service of these facilities and infrastructure is benefit to the school community, especially students in their learning. The main purpose of managing school facilities and infrastructure is to provide good and professional services in creating the effective and conducive school environment.</p>

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.

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