Дисертації з теми "Room Acoustic Simulation"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-26 дисертацій для дослідження на тему "Room Acoustic Simulation".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Durany, Vendrell Jaume. "Geometrical room acoustics: ray based simulation for room acoustics." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/395190.
Повний текст джерелаRoom acoustics is the science devoted to study sound propagation in enclosures where the sound conduction medium is bounded on all sides by walls, ceiling and floor. The acoustic information of any room, the so-called impulse response, is expressed in terms of the acoustic field as a function of space and time. The analytical formulation of the sound variables distribution is, in general, extremely hard to obtain and there only exist solutions of very simple and unrealistic scenarios. Therefore the use of computers for solving this type of problems has emerged as a proper alternative to calculate impulse responses. In this Thesis we focus on the use of the ray-based methods to compute impulse responses. More precisely, we present the design and implementation of a sound ray tracing engine that computes the impulse response in any given environment not only for the pressure but also for the velocity vector of the acoustic field. With this extra information we have all the necessary data to model the propagation of sound and we can then naturally spatialize the sound to any speakers layout. This research contributes to the main aspects in the computation of impulse responses using a ray-based approach. The presented ray tracing engine includes a method developed to apply the analytical solution for the Acoustic Bidirectional Reflectance Distribution Function (A-BRDF) in the Vector Based Scattering Model (VBS), which reduces dramatically the computational cost.
Escolano, Carrasco José. "Contributions to discrete-time methods for room acoustic simulation." Doctoral thesis, Universitat Politècnica de València, 2010. http://hdl.handle.net/10251/8309.
Повний текст джерелаEscolano Carrasco, J. (2008). Contributions to discrete-time methods for room acoustic simulation [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/8309
Palancia
Campos, Antonio Guilherme Rocha. "Three-dimensional digital waveguide mesh modelling for room acoustic simulation." Thesis, University of York, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423754.
Повний текст джерелаAspöck, Lukas [Verfasser], Michael [Akademischer Betreuer] Vorländer, and Stefan [Akademischer Betreuer] Weinzierl. "Validation of room acoustic simulation models / Lukas Aspöck ; Michael Vorländer, Stefan Weinzierl." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1226303846/34.
Повний текст джерелаAretz, Marc [Verfasser]. "Combined wave and ray based room acoustic simulations of small rooms : challenges and limitations on the way to realistic simulation results / Marc Aretz." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1029471134/34.
Повний текст джерелаSHTREPI, LOUENA. "Measurement traceability of sound scattering coefficient of diffusive surfaces used in room acoustics and virtual acoustical environments." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2608163.
Повний текст джерелаBrum, Cristhian Moreira. "SIMULAÇÃO ACÚSTICA DE SALAS DE AULA EM ESCOLAS DE EDUCAÇÃO BÁSICA: UMA PROPOSTA TIPOLÓGICA PARA PRÁTICA MUSICAL." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/7813.
Повний текст джерелаThe study of room acoustics is linked to the importance of sound inside a room, so the architectural characteristics of the internal space determine the acoustic behavior. To get better acoustics of a room there are computational methods that simulate the acoustic behavior of a room before his execution, providing the prediction of the simulated environment behavior from the acoustic point of view. The acoustic parameters of the resulting acoustic simulations as Reverberation Time, Initial Decay Time, Clarity, Sharpness and Speech Transmission Index, are responsible for identifying the acoustic conditions of the geometric model of a classroom. This geometric model used as sample classrooms of different types of municipal schools in Santa Maria - RS, with the aim of developing a classroom typology for the music teaching from virtual acoustic models using computing simulation. Geometric models of classrooms for teaching music were developed using as input data, dimensions, shapes and elements usually used in these environments and developed representative virtual acoustic models these virtual classrooms, in which were measured acoustic parameters related to the reverberation time from the impulse response of the acoustic models of virtual rooms. We analyzed the experimental results and simulated with and without furniture for the acoustic parameters, and these comparisons were related to the values of JND (Just Noticeable Difference) near the standard tolerance according to ISO 3382/2009 with normalized values of 500 Hz to 1000 Hz. A geometric study was developed based on Bolt (1946) which defined the appropriate geometric measures of the room. Thus, a functional typology was originated which meets the architectural acoustic requirements and the initial proposal of presenting a music classroom typology providing an environment with acoustic quality, according to Law number 11.769/2008 that inserts education music in schools on a mandatory basis.
O estudo da acústica de salas está vinculado à importância do som dentro de um recinto, logo, as características arquitetônicas do espaço interno determinam seu comportamento acústico. Para buscar melhores condições acústicas de um recinto disponibilizam-se métodos computacionais que simulem o comportamento acústico de uma sala, antes de sua execução, proporcionando a previsão de comportamento do ambiente simulado do ponto de vista acústico. Os parâmetros acústicos resultantes das simulações acústicas, como: Tempo de Reverberação, Tempo de Decaimento Inicial, Clareza, Definição e o Índice de Transmissão da Fala são responsáveis pela identificação das condições acústicas do modelo geométrico de uma sala de aula. Este modelo geométrico utilizou como amostra as salas de aula das diferentes tipologias de escolas da rede estadual de educação de Santa Maria - RS, com o objetivo de desenvolver uma tipologia de sala de aula, para o ensino da música, a partir de modelos acústicos virtuais utilizando-se simulação computacional. Foram desenvolvidos modelos geométricos de salas de aula para o ensino da música utilizando-se como dados de entrada, dimensões, formatos e elementos, usualmente utilizados nestes ambientes, e desenvolvidos modelos acústicos virtuais representativos destas salas, aos quais foi feita uma avaliação dos parâmetros acústicos relacionados ao tempo de reverberação, partindo-se da resposta impulso dos modelos acústicos virtuais das salas. Foram analisados resultados experimentais e simulados na situação sem mobília e com mobília, para os parâmetros acústicos, e essas comparações foram relacionadas com os valores de JND (em inglês Just Noticeable Difference) padronizadas as margens de tolerância, de acordo com a ISO 3382/2009, com valores normalizados de 500 Hz a 1000 Hz. Também foi desenvolvido um estudo geométrico, a partir de Bolt (1946), que definiu as medidas geométricas adequadas da sala. Com isto, originou-se uma tipologia funcional, observando as exigências acústicas arquitetônicas, cumprindo a proposta inicial de apresentar uma tipologia de sala de aula, para a música, a fim de proporcionar um ambiente com qualidade acústica, atendendo a Lei nº 11.769/2008, que insere o ensino da música nas escolas, de forma obrigatória.
Zhang, Wei. "Simulation and experimental study of room acoustics." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27311.
Повний текст джерелаPriede, Gareth. "Room acoustics : an investigation into the computer simulation of room acoustics, with special reference to Jameson Hall." Thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/5120.
Повний текст джерелаThis thesis consists of essentially two parts. The first deals with the theory and measurement of room acoustics while the second examines the room acoustic prediction methods.
Spa, Carvajal Carlos. "Time-domain numerical methods in room acoustics simulations." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7565.
Повний текст джерелаEn aquesta Tesi hem centrat el nostre anàlisis en els mètodes basats en el comportament ondulatori dins del domini temporal. Més concretament, estudiem en detall les formulacions més importants del mètode de Diferències Finites, el qual s'utilitza en moltes aplicacions d'acústica de sales, i el recentment proposat mètode PseudoEspectral de Fourier. Ambdós mètodes es basen en la formulació discreta de les equacions analítiques que descriuen els fenòmens acústics en espais tancats.
Aquesta obra contribueix en els aspectes més importants en el càlcul numèric de respostes impulsionals: la propagació del so, la generació de fonts i les condicions de contorn de reactància local.
Room acoustics is the science concerned to study the behavior of sound waves in enclosed rooms. The acoustic information of any room, the so called impulse response, is expressed in terms of the acoustic field as a function of space and time. In general terms, it is nearly impossible to find analytical impulse responses of real rooms. Therefore, in the recent years, the use of computers for solving this type of problems has emerged as a proper alternative to calculate the impulse responses.
In this Thesis we focus on the analysis of the wavebased methods in the timedomain. More concretely, we study in detail the main formulations of FiniteDifference methods, which have been used in many room acoustics applications, and the recently proposed Fourier PseudoSpectral methods. Both methods are based on the discrete formulations of the analytical equations that describe the sound phenomena in enclosed rooms.
This work contributes to the main aspects in the computation of impulse responses: the wave propagation, the source generation and the locallyreacting boundary conditions.
Ozgenel, Caglar Firat. "Developing A Tool For Acoustical Performance Evaluation Throughout The Design." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614066/index.pdf.
Повний текст джерелаČerný, Filip. "Simulace šíření zvukové vlny v uzavřeném prostoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220311.
Повний текст джерелаNavarro, Ruiz Juan Miguel. "Discrete-time modelling of diffusion processes for room acoustics simulation and analysis." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/14861.
Повний текст джерелаNavarro Ruiz, JM. (2012). Discrete-time modelling of diffusion processes for room acoustics simulation and analysis [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/14861
Palancia
Pollow, Martin Verfasser], Michael [Akademischer Betreuer] [Vorländer, and Peter [Akademischer Betreuer] Vary. "Directivity patterns for room acoustical measurements and simulations / Martin Pollow ; Michael Vorländer, Peter Vary." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1127337165/34.
Повний текст джерелаPollow, Martin [Verfasser], Michael [Akademischer Betreuer] Vorländer, and Peter [Akademischer Betreuer] Vary. "Directivity patterns for room acoustical measurements and simulations / Martin Pollow ; Michael Vorländer, Peter Vary." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://nbn-resolving.de/urn:nbn:de:hbz:82-rwth-2015-047810.
Повний текст джерелаSvensson, Mattias. "Simulating Low Frequency Reverberation in Rooms." Thesis, KTH, Marcus Wallenberg Laboratoriet MWL, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290038.
Повний текст джерелаMålet för detta examensarbete var att undersöka möjligheten att programmera ett praktisktanvändbart verktyg för lågfrekvensanalys inom rumsakustik. Behovet uppstår från Acadserfarenhet att resultat från simuleringar med hjälp av strålgångsmjukvara avviker i lågfrekvensområdeti jämförelse med fältmätningar i färdigställda rum. Verktyget är programmerati Matlab och använder Finite Difference Time Domain (FDTD) metoden, vilket är en typav snabb finita elementanalys i tidsdomänen.En rad tester har genomförts för att se metodens praktiska begräsningar orsakade av numeriskafel vid val av ljudkälla, diskretisering och simuleringstid. Randvillkor, med och utanfrekvensberoende, har analyserats genom jämförelser av simulerade resultat i virtuella impedansröroch efterklangsrum mot analytiska beräkningar. Testerna visar att FDTD-metodentycks fungerar väl för verktygets tilltänkta användningsområde.Ett fälttest genomfördes för att verifiera att det med verktyget är möjligt att enkelt och relativtsnabbt simulera resultat som väl matcher uppmätta rumsakustiska parametrar. Jämförelsermellan FDTD-metoden och resultat beräknade med strålgångsanalys och finita elementmetoden(FEM) visade även på god korrelation. Detta indikerar att de avvikelser Acaderfar mellan simulerade resultat och fältmätningar troligen orsakas av osäkerheter i den ingåendeljudabsorptionsdata som används för låga frekvenser, snarare än av begränsningar istrålgångsmjukvaran. Verktyget kan fortfarande komma till användning för mer komplexamodeller, där kantdiffraktion är en viktigare faktor, eller helt enkelt som ett sätt att få ett”andra utlåtande” till resultaten från strålgångsmjukvaran då FEM-analys generellt är en förtidskrävande metod för att användas på daglig basis.Kringverktyg skapade för t.ex. import av modeller, utdata i form av rumsakustiska parametrar,grafer och ljudfiler redovisas inte i detalj i denna rapport eftersom dessa ligger utanförexamensarbetet.
Kowalczyk, K. "Boundary and medium modelling using compact finite difference schemes in simulations of room acoustics for audio and architectural design applications." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517381.
Повний текст джерелаRouch, Jérémy. "Modélisations des systèmes d'assistance à la réverbération régénératifs." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00959768.
Повний текст джерелаEmerit, Marc. "Simulation binaurale de l'acoustique de salles de concert." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0100.
Повний текст джерелаSremčević, Witzig Jovana [Verfasser], Gerhard H. [Akademischer Betreuer] Müller, Ivana [Akademischer Betreuer] Kovacic, and Peter [Akademischer Betreuer] Rentrop. "Model Reduction Methods in Room Acoustical Simulation at Low Frequencies / Jovana Sremčević Witzig. Gutachter: Ivana Kovačić ; Peter Rentrop. Betreuer: Gerhard H. Müller." München : Universitätsbibliothek der TU München, 2012. http://d-nb.info/1021975443/34.
Повний текст джерелаPolack, Jean-Dominique. "La transmission de l'energie sonore dans les salles." Le Mans, 1988. http://www.theses.fr/1988LEMA1011.
Повний текст джерелаTsingos, Nicolas. "Simulation de champs sonores de haute qualité pour des applications graphiques interactives." Phd thesis, Université Joseph Fourier (Grenoble), 1998. http://tel.archives-ouvertes.fr/tel-00528829.
Повний текст джерелаRen, Zhen. "Filtrage adaptatif appliqué au controle actif de l’acoustique d’une salle." Grenoble INPG, 1995. http://www.theses.fr/1995INPG0188.
Повний текст джерелаChou, Sheng Yuan, and 周聖原. "Simulation on Room Acoustic for Side Walls and Front Stage Reflectors by Using Concert Hall of Tainan Municipal Cultural Center." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/26287527700476841734.
Повний текст джерела高苑科技大學
建築研究所
100
Good quality of indoor acoustic environment is an important factor for audience, includes both room acoustics and noise control. In performing art halls, good room-shaped design in order to prevent acoustic obstacles, and suitable interior decoration could create a better room acoustics to achieve the listening quality. There are some factors those affect room acoustical quality. This research changes the side walls of the concert hall and the stage reflectors to simulate the influences of room acoustics. In this study, Tainan Municipal Cultural Center is chose for sample of simulation, discuss the various side walls of concert hall and stage ceiling reflectors and different materials in the patterns by using the software ODEON. This study proposed the best optimum pattern to provide application for designers and users and recommended the simulation method for indoor acoustics of designing domestic concert halls. Keywords: Side wall of auditorium, Stage reflector, Acoustic design, Room Acoustics, Computer Simulation
"Time-domain numerical methods in room acoustics simulations." Universitat Pompeu Fabra, 2009. http://www.tesisenxarxa.net/TDX-0225110-135230/.
Повний текст джерелаAlmeida, João Miguel de Albuquerque Morais d'. "Reabilitação acústica em edifícios de valor histórico. Estratégias para melhoria do condicionamento acústico de espaços." Master's thesis, 2018. http://hdl.handle.net/10316/84932.
Повний текст джерелаA reabilitação e requalificação do património edificado tem vindo a assumir um peso crescente na construção em Portugal. Em edifícios antigos, em particular quando se pretende uma alteração profunda das suas funções e a adaptação a recintos com elevadas exigências de conforto acústico, como são exemplo os auditórios e grandes salas polivalentes, é fundamental um estudo de condicionamento acústico aprofundado e uma forte interacção com as restantes especialidades envolvidas, garantindo a manutenção do valor patrimonial do edifício.Quando os edifícios se revestem de adicional importância, como é o caso de edifícios com elevado valor histórico, há especificidades que requerem investigação adicional nos âmbitos da história e da arquitectura.No presente trabalho, procuraram-se estratégias de condicionamento acústico adequadas à reabilitação de salas e edifícios de elevado valor histórico.Usou-se para tal um caso de estudo: o edifício da igreja do Colégio da SS. Trindade. Um edifício do séc. XVII ao estilo arquitectónico maneirista que agora cumpre a função de Grande Auditório da Casa da Jurisprudência, integrada na Faculdade de Direito da Universidade de Coimbra. Este espaço sofreu recentemente uma reabilitação durante a qual foram introduzidos alguns revestimentos com elevada absorção sonora, com o intuito de reduzir o tempo de reverberação.Foram feitas medições acústicas no auditório vazio. Recolheram-se os resultados de parâmetros relativos ao tempo de reverberação e à definição e inteligibilidade da palavra. Analisou se o campo sonoro do auditório e a sua geometria complexa, e identificaram-se os desafios acústicos existentes.Conhecendo o programa e os objectivos do utilizador final daquele espaço, um auditório maioritariamente dedicado à palavra, traçaram-se os objectivos acústicos e determinaram se as métricas ideais a alcançar.Para poder testar as estratégias desenvolvidas construiu-se um modelo numérico do auditório nas condições actuais, num programa de acústica de traçado de raios. A construção deste modelo necessitou da recolha de informação de projecto, no local e bibliográfica. De seguida, o modelo foi calibrado ajustando os coeficientes de absorção sonora dos materiais de revestimento das superfícies, minimizando o erro entre o tempo de reverberação simulado e medido, em cada banda de oitava de frequência. Foram ainda simulados os restantes parâmetros acústicos para comparação com os valores medidos, tendo-se verificado genericamente uma boa correlação.Avançou-se então para a investigação da história da igreja, no sentido de perceber as limitações na procura de soluções, por forma a respeitar o valor histórico e compatibilizar as estratégias com a arquitectura original e a arquitectura da reabilitação. Estas limitações podem ocorrer ao nível de elementos móveis ou fixos, de tipos de materiais e aparência, de contemporaneidade e anacronismo.Procedeu-se ao desenvolvimento de estratégias e definição e materialização de propostas de soluções para melhorar o desempenho acústico do auditório. Estas propostas foram testadas no modelo numérico e os resultados apresentados e analisados.Finalmente, foram tiradas conclusões e apresentados desenvolvimentos futuros.
The rehabilitation and requalification of the built heritage assumes an increasing weight in the construction industry in Portugal. In historic buildings, in particular when there is a deep change of its function and transformation to halls with high quality acoustics is required, such as auditoriums and large multipurpose halls, a thorough acoustics study and a strong interaction with other design stakeholders is mandatory, in order to safeguard that historical value.When buildings are of major importance, such as those with high historical value, there are specifics that require additional research in the fields of history and architecture.In this dissertation, room acoustics strategies were developed, in accordance with the rehabilitation of such kind of rooms or buildings, of high historical value.A case study was used: the church building of the Colégio da SS. Trindade. A 16th century church, of Mannerist architectural style that has been transformed to a grand auditorium of the Casa da Jurisprudência, integrated in the Faculdade de Direito da Universidade de Coimbra. This space has recently undergone a rehabilitation during which some lining materials with high sound absorption were installed, with the purpose of reducing the reverberation time.Acoustic field measurements were carried out in the auditorium, empty. The results of the reverberation time were taken, as well as for the definition and intelligibility of speech. The auditorium's sound field was assessed along with its complex geometry, and existing acoustic challenges were identified.Knowing that this auditorium is mainly dedicated to speech events, the acoustic objectives were defined and the metrics to be achieved were determined.In order to test the strategies developed, a computational model of the auditorium was created in its current conditions, using a ray tracing software. The creation of this model required the collection of design information, on-site surveys and bibliographical survey. Following that, the model was calibrated by adjusting the sound absorption coefficients of the surfaces materials, and thus minimizing the error between the simulated and measured reverberation times in each frequency octave band. Other acoustic parameters were also simulated for comparison with the measured values, and a good overall correlation was obtained.The next step was to survey the history of the church in order to perceive the constraints of the solutions, so that the historical value is preserved and the strategies embed with the original architectural design and the rehabilitation architectural design. These limitations can be of mobile or fixed features, types of materials and its appearance, contemporaneity and anachronism.Strategies were developed and solutions to improve the acoustic performance of the auditorium were proposed. These proposals were then tested in the computational model and the results presented and analysed.Finally, conclusions to this study were drawn and future developments were presented.