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Article A Modeling Approach for Designing New Acoustic Materials(Gazi Univ, 2024) Koçyiğit, Filiz Bal; Köse, Ercan; Buluklu, Hatice Mehtap; Bal Kocyigit, FilizIn this study, mathematical modeling design based on Sound Transmission Loss measurement results of new acoustic material samples with natural content was carried out. Using the test samples in question, transfer function of acoustic materials based on electronic filter circuit design and a transition design method for the production of new acoustic materials by utilizing the transfer function is presented. Based on the experimental results of the test samples, it is the most suitable low-pass filter structure for the proposed design. In this study, active Sallen-Key low-pass filter structure is preferred and used. Sound Transmission Losses in dB (decibels) of acoustic samples were obtained experimentally for 500, 1000, 2000 and 4000 Hz. fundamental frequencies in the literature. Based on these data, transfer function simulation suppression gain results were obtained in TINA-TI program, active filter circuit designed, and MATLAB program. When the other results were compared in the experimental results, it was seen that very close values were obtained. It has been demonstrated that the proposed method can be used effectively in the design and examination of new acoustic materials.Review Analysis of Different Methods of Suppressing Generator Noise Reaching Indoor Noise(2022) Öz, Hatice Mehtap; Koçyiğit, Filiz Bal; Köse, Ercan; Buluklu, Hatice MehtapThe noise which occurs during the operation of the auxiliary power units is a disturbing factor, although its level varies depending on the environment. This high level of noise in occupational areas can cause not only health but also accidents risks. While silencers are mostly preferred for active noise control, acoustic foam or textile products are preferred according to passive control methods. In this review, the noises produced by the generators were examined and the studies in the literature on suppressing these noises were evaluated by making comparative analyzes. New recommendations have been developed according to the results of the comparative analysis. In case the sampled natural gas generator is closed with 2 mm thick plywood and a steel framed box covered with an acoustic sponge, the sound pressure level is approximately 30 dB in low frequency diesel + electric generators using a silencer according to active control methods. In measurements; It was observed that it decreased from 93.2 to 88.4 dB. While materials such as an acoustic sponge, which are preferred in passive control methods, are open-celled and porous structures, it is advantageous to have sound absorption capacity, but it can be a disadvantage due to its synthetic content.Article Assessment of the Acoustic Performance of Historical Structures That Shedlight on Today's Technologies: Fatih Pasha (kurşunlu) Mosque - Diyarbakır(2021) Aydın, Derya Çakır; Koçyiğit, Filiz Bal; Dalkılıç, NeslihanToday's technologies are produced using new construction methods and new materials and using differenttechniques. While the time dimension of the parametric design, which is defined as the fourth dimension,is sometimes an hour, day or year, sometimes this is seen as a bridge between the past and the present ofthe structures that have survived in a large date range. For this reason, the support of new buildingmaterials and techniques from time to time with methods that have the technical data of the periodobtained as a result of our historical heritage and long experience can provide us with new perspectives.The architectural features and construction techniques of historical mosques contain important data on theacoustic performance of religious buildings. Our heritage knowledge must be blended with newknowledge and technologies. Within the scope of the study, the details and systems that were effective inproviding acoustic performance parameters in the architecture of Fatih Pasha (Kurşunlu) Mosque, whichwas the first Ottoman period work of the city located in Diyarbakır Suriçi area, were examined. Among theobjective parameters of the sound, Reverberation Time (RT), Early Decay Time (EDT), Clarity (C80), andDefinition (D50) metrics were measured. The obtained data were compared with reference values andanalyzed. As a result of the data and analysis obtained in the literature reviews, it was determined that theacoustic values of the mosque were in harmony with the reference values. When the measurement datawere compared with the obtained international publications, it has been observed that the sound pressurevalue ranges depending on the frequency of acceptable indoor acoustics standards. The importance ofrestoration works in harmony with materials such as basalt, brick, limestone, lime mortar and plasterwhich are the original materials of the building was highlighted in terms of acoustics.Article Citation - WoS: 2Citation - Scopus: 3Low-Cost Alpha Cabin Like Test Box Proposal for the Development of New Acoustic Sound Insulation Materials(Gazi Univ, 2023) Koçyiğit, Filiz Bal; Köse, Ercan; Buluklu, Hatice Mehtap; Bal Kocyigit, FilizExperimental criteria for sound insulation material recommendation and design have an important share in indoor acoustic control. Among these criteria, laboratories with devices such as impedance tubes, alpha cabins and reverberation rooms used to measure and analyze parameters such as sound transmission loss and sound absorption coefficient have been investigated. In literature, it has been observed that there are studies on acoustic materials and the tests applied to these materials, but the application is more limited. According to research data, an Alpha Cabin model system design that can be used to develop new types of acoustic sound materials has been proposed. In addition to the fact that a large number of experimental measurements can be performed at lower costs using the designed Alpha Cabin model system, many tests can be performed easily for different material designs in a very short time. To perform these tests, the Alpha Cabin system has been designed based on noise and sound insulation. For example, floating flooring, ribbed connection, and so on. Afterward, different insulation materials were used for insulation purposes and standards were achieved. The Alpha Cabin test system, which was designed and developed, overlaps the experimental and theoretical data for 500, 2000, and 4000 Hz when compared with the values of 29.1 dB for 500 Hz, 38.6 dB for 2000 Hz, and 49 dB for 4000 Hz measured in the Acoustic Facade Panel Test Room, and it has been observed that it can be used in the development of new sound insulation materials.Article Bibliometric Analysis of Publications on Stapedius Muscle(Pera Yayincilik Hizmetleri, 2024) Sever, Sinem Nur; Sen, Esra; Turhan, BegümhanObjective: The clinical importance of the stapedius muscle has been particularly emphasized in several publications. The purpose of this study is to bibliometrically analyze all publications on the stapedius muscle and to determine research trends related to this muscle. Methods: The publications related to the stapedius muscle were identified by the Web of Science database. A total of 548 publications were discovered throughout the literature review. Bibliometric techniques were employed to analyze the identified publications (VOSviewer Version 1.6.13). Results: The first studies were conducted in the 1980s. The highest number of publications related to the stapedius muscle was in 2020 (22 studies), while the lowest was in 1985 (2 studies). Most of the publications (90.11%) were written in English. The USA was the most prolific nation, with John J. Guinan having written the most articles on the stapedius muscle. Harvard University was also the most prolific institution. Conclusion: The findings demonstrated the researchers’ interest in the stapedius muscle and offered quantifiable information regarding the muscle’s position within the scientific domain. Recent years have seen an increase in studies on this topic. To the best of our knowledge, it can be said that this study is the first bibliometric analysis on the stapedius muscle.
