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Dissertations / Theses on the topic 'Room acoustics'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Durany, Vendrell Jaume. "Geometrical room acoustics: ray based simulation for room acoustics." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/395190.

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L’acústica de sales és la ciència encarregada d’estudiar la propagació del so en entorns tancats. La informació acústica de qualsevol entorn, coneguda com la resposta impulsional, s’expressa en termes del camp acústic com una funció de l’espai i el temps. La formulació analítica de la distribució de les variables del so és, en general, extremadament complexa d’obtenir i només existeixen solucions d’escenaris molt simples i irreals. Per tant, l’ús d’ordinadors per solucionar aquest tipus de problemes ha emergit com una alternativa adequada per calular funcions de resposta. En aquesta Te

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2

Liddy, David W. Holmes John F. "Acoustic room de-reverberation using time-reversal acoustics /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA374579.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, September 1999.<br>"September 1999". Thesis advisor(s):, Andrés Larraza, Bruce C. Denardo. Includes bibliographical references (p. 49). Also available online.

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3

Liddy, David W., and John F. Holmes. "Acoustic room de-reverberation using time-reversal acoustics." Thesis, Monterey, California: Naval Postgraduate School, 1999. http://hdl.handle.net/10945/13698.

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This thesis probes the performance of one-channel time-reversal acoustics in a chamber in terms of the geometry of the cavity. In particular, a rectangular chamber is compared to an enclosure that has a stadium shape. The mode structure in the rectangular cavity is highly symmetric, while it is highly irregular in the stadium-shaped cavity. Time- reversal acoustic techniques produce an improved focus in the latter. The focusing quality is determined as a function of frequency, time-reversal window size, and spatial extent. A scheme for encrypted acoustic communication, both in air and underwat

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4

Smurzynski, Jacek. "Acoustic Foundations of Signal Enhancement and Room Acoustics." Digital Commons @ East Tennessee State University, 2007. https://www.amzn.com/1597565628.

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Book Summary: Chermak and Musiek's two-volume, award-winning handbooks are back in newly revised editions. Extensively revised and expanded, Volume II provides expanded coverage of rehabilitative and professional issues, detailing intervention strategies for children and adults. Volume I provides comprehensive coverage of the auditory neuroscience and clinical science needed to accurately diagnose the range of developmental and acquired central auditory processing disorders in children, adults, and older adults. Building on the excellence achieved with the best-selling 1st editions which earne

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5

Hatlevik, Espen. "Are Musicians Affected by Room Acoustics in Rehearsal Rooms?" Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18839.

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This study has investigated to what extent musicians adjust their source levels to different music rehearsal rooms. In the experiment, six amateur musicians were to perform the same song i four different rehearsal rooms, by first singing, then by playing guitar and last by combining singing with guitar playing. All sound sources were recorded and analyzed. The results shows that the average musician adjusts his source levels to the rehearsal room and that most of the adjustments are made in the guitar playing. Looking at the individual musician there are some that do not show any signs as to b

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6

Priede, 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.

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Bibliography: leaves 138-141.<br>This 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.

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7

Zhang, Wei. "Simulation and experimental study of room acoustics." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27311.

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Sound propagation is a complex subject, especially in an enclosure. The study of room acoustics involves not only a research into how sound is propagated in a room, but also a search into how to measure sound under different condition and how to control sound in the case of various wall materials. For an acoustical environment, there are three separated parts: sound sources, room acoustics, and the listens. These three items form a source-medium-receiver chain, which is typical for most of communication models. In this thesis, the image method is applied to predict the acoustical quality of a

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8

Spa, Carvajal Carlos. "Time-domain numerical methods in room acoustics simulations." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7565.

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L'acústica de sales s'encarrega de l'estudi del comportament de les ones sonores en espais tancats.La informació acústica de qualsevol entorn, coneguda com la resposta impulsional, pot ser expressada en termes del camp acústic com una funció de l'espai i el temps. En general, és impossible obtenir solucions analítiques de funcions resposta en habitacions reals. Per tant, en aquests últims anys, l'ús d'ordinadors per resoldre aquest tipus de problemes ha emergit com una solució adecuada per calcular respostes impulsionals.<br/>En aquesta Tesi hem centrat el nostre anàlisis en els mètodes basat

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Murphy, Damian Thomas. "Digital waveguide mesh topologies in room acoustics modelling." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313846.

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10

Hargreaves, J. A. "Time domain boundary element method for room acoustics." Thesis, University of Salford, 2007. http://usir.salford.ac.uk/16604/.

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This thesis is about improving the suitability of the time domain Boundary Element Method (BEM) for predicting the scattering from surface treatments used to improve the acoustics of rooms. The discretised integral equations are typically solved by marching on in time from initial silence; however, this being iterative has potential for divergence. Such instability and high computational cost have prohibited the time domain BEM from widespread use. The underlying integral equation is known to not possess unique solutions at certain frequencies, physically interpreted as cavity resonances, and

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HAND, SCOTT ANTHONY. "ADAPTABLE ACOUSTICS IN MULTI-USE MUSIC PERFORMANCE SPACES." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1083634977.

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12

Kuster, Martin. "Inverse methods in room acoustics with under-determined data and applications to virtual acoustics." Thesis, Queen's University Belfast, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486233.

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With the advent of commercial surround sound systems there is a growing demand for 11 system that can convert existing mono and stereo recor~ings into a surround sound recording. A part of this problem is to generate the reverberation for the additional audio channels from the reverberation in the mono or stereo recording. . , In thi~ thesis, it is investigated whether a room model can be constructed from one or two room impulse responses and in which a virtual surround sound recording can then be perfonned. The estimation of the room model parameters is based on the three well-mown room acous

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13

Ljung, Robert. "Room acoustics and cognitive load when listening to speech." Doctoral thesis, Luleå tekniska universitet, Arbetsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18057.

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The present thesis investigated the effects of background noise or a long reverberation time in learning situations. All studies used spoken texts that were presented above the speech intelligibility threshold, but were degraded enough to make listening more effortful. The basic hypothesis for the whole project was that listening to speech in a bad acoustic environment should increase the cognitive load for the listener, which should impair memory of the text. In Paper I the auditory stimuli were lists of words and sentences that were degraded by a background noise. Paper II was a replication

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Wu, Tsan-Ming. "Statistical impulse reponse modeling and dereverberation for room acoustics." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14932.

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15

Frey, Johannes [Verfasser]. "Pre-attentive processing of room acoustics / Johannes Daniel Frey." Hamburg : Helmut-Schmidt-Universität, Bibliothek, 2017. http://d-nb.info/1131558847/34.

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Yadav, Manuj. "Loudness of the singing voice: A room acoustics perspective." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15653.

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This thesis is examining ectophonic (sounds created outside the human body) and autophonic (sound from one’s own voice) loudness perception for the operatic voice, within the context of room acoustics. Ectophonic loudness perception was modelled within the context of room acoustics for the operatic voice in chapter two. These models were then used to explore the loudness envelope of the messa di voce (MDV), where psychoacoustically based measures were shown to perform better than physical acoustic measures used in previous studies. The third chapter addressed autophonic loudness perception, wh

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Frey, Johannes Daniel [Verfasser]. "Pre-attentive processing of room acoustics / Johannes Daniel Frey." Hamburg : Helmut-Schmidt-Universität, Bibliothek, 2017. http://d-nb.info/1131558847/34.

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18

Fazenda, Bruno M. "Perception of room modes in critical listening spaces." Thesis, University of Salford, 2004. http://usir.salford.ac.uk/1828/.

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Room modes are a recognised problem in small critical listening rooms and are known to cause colouration of sound reproduced within them. Investigations on the causes and solutions for this problem have been carried out for some time. Interest in the topic has extended to loudspeaker manufacturers who have mainly concentrated in developing methods for controlling the loudspeaker-room interaction in order to ameliorate low frequency reproduction. Compared to objective work on passive and active control methods, the study of the subjective perception of room resonances has been somewhat neglecte

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Roper, Simon Edward. "A room acoustics measurement system using non-invasive microphone arrays." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/891/.

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This thesis summarises research into adaptive room correction for small rooms and pre-recorded material, for example music of films. A measurement system to predict the sound at a remote location within a room, without a microphone at that location was investigated. This would allow the sound within a room to be adaptively manipulated to ensure that all listeners received optimum sound, therefore increasing their enjoyment. The solution presented used small microphone arrays, mounted on the room's walls. A unique geometry and processing system was designed, incorporating three processing stage

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Denison, Michael Hunter. "Image Source Modeling of Time Reversal for Room Acoustics Applications." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7449.

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Time Reversal (TR) is a technique that may be used to focus an acoustic signal at a particular point in space. While many variables contribute to the quality of TR focusing of sound in a particular room, the most important have been shown to be the number of sound sources, signal bandwidth and absorption properties of the medium [Ribay et al., J. Acoust. Soc. Am. 117(5), 2866-2872 (2005)]. However, the effect of room size on TR focusing has not been explored. Using the image source method algorithm proposed by Allen and Berkley [J. Allen and D. A. Berkley, J. Acoust. Soc. Am. 65(4), 943-950 (1

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Watson, John Lawrence, and not supplied. "An investigation into the identification of objective parameters correlating with the subjective functional performance of critical listening rooms." RMIT University. Applied Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080218.092220.

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The link to subjective parameters and objective parameters in the field of room acoustics has been the source of much research. This thesis surveys some of the available objective room acoustical analysis methods, quantify their advantages and disadvantages with respect to the measurement of acoustical qualities of professionally operated critical listing rooms, and implements these methods in a range of critical listening rooms. In conjunction with the objective room analysis, a subjective component of research was also performed. A series of anechoically recorded standard instrument sounds w

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22

Seip, Clare Elizabeth. "Multipurpose room interior noise control for owners and facility managers." Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/502.

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23

Isebakke, Anders Kristoffer. "Edge Diffraction Implementation by Semi-Transparent Surfaces in Geometrical Room Acoustics." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13986.

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This report presents a potential method to efficiently implement edge diffraction from a noise barrier into geometrical room acoustic softwares. The modelling is based on semi-transparent surfaces, and the classic digital signal processing multipath transmission equation has been employed to describe in a mathematical term the presented method. The basic idea is to subdivide the noise barrier into a number of subareas, and then give each subarea an optimalized transmission coefficient for building the best possible output impulse response.To evaluate the proposed semi-transparent modelling, a

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24

SHTREPI, 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.

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The best concert halls take benefit not only from the basic room shape but also from the corrugations of the walls. These diffusive surfaces are responsible for energy mixing, energy extraction from geometrical paths, for filling gaps and increasing reflections density in the impulse response. Hence, performance spaces are characterized by a complex sound field, due to the presence of absorptive and diffusive surfaces. The acoustic properties of these surfaces are characterized based on laboratory standardized measurements. Despite this, no sufficiently satisfactory databases exist. Thus, acou

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Navarro, 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.

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Esta tesis está centrada en el modelado de la acústica de salas en espacios cerrados mediante el uso de una ecuación de transferencia radiativa y una ecuación de difusión En este trabajo se investiga cómo a través de estos modelos teóricos se pueden simular el campo sonoro en espacios complejos. Recientemente, el modelo de la ecuación de fusión ha sido prppuesto para ser utilizado en el modelado de la acústica de salas con superficies que reflejan el sonido de forma totalmente difusa. Este enfoque del uso de la ecuación de la disusión de sido intensamente investigado en los últimos años, ya qu

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Carvalho, Vinícius Paggioli de. "Estudo e avaliação da acústica de home studios /." Ilha Solteira, 2019. http://hdl.handle.net/11449/190936.

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Orientador: João Antonio Pereira<br>Resumo: A indústria fonográfica com o advento dos equipamentos digitais de gravação sofreu grandes transformações nos últimos anos. A mudança mais marcante é a migração dos músicos que antes trabalhavam com grandes gravadoras e hoje trabalham de forma independente, com estúdios construídos ou adaptados em suas residências, os chamados home studios. Seja em um grande estúdio profissional de gravação, ou em um home studio, o estudo da acústica do local é imprescindível para se obter boa qualidade nas gravações. Uma das áreas aplicadas da acústica é a avaliação

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Downes, Julian. "The measurement of microphones in a reverberant room using a transient excitation method." Thesis, University of Surrey, 1985. http://epubs.surrey.ac.uk/847381/.

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A transient excitation method is described which allows the free field frequency and impulse responses of a microphone to be measured in a reverberant environment. The pressure transient generated by exciting a loudspeaker with a narrow voltage pulse is detected at a point in the loudspeaker's far field by the test microphone. A reference microphone, whose response is assumed flat over the frequency range of interest, is then substituted in exactly the same position and its response to the transient measured. The outputs of the two microphones are accurately sampled and deconvolved using a dis

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Hamilton, Brian. "Finite difference and finite volume methods for wave-based modelling of room acoustics." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/22940.

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Wave-based models of sound propagation can be used to predict and synthesize sounds as they would be heard naturally in room acoustic environments. The numerical simulation of such models with traditional time-stepping grid-based methods can be an expensive process, due to the sheer size of listening environments (e.g., auditoriums and concert halls) and due to the temporal resolution required by audio rates that resolve frequencies up to the limit of human hearing. Finite difference methods comprise a simple starting point for such simulations, but they are known to suffer from approximation

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Peacock, Gavin Robert. "The correction of room acoustics over a finite region using an artificial neural network." Thesis, University of Brighton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359075.

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30

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.

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Performance of the buildings has always been a concern for the architects. With the enhancements in the technology, it is possible to measure, analyze and evaluate the performance of an architectural design before it is built via simulation tools developed. With the evaluation of the analysis performance of the concerned space can be upgraded if simulation tools are employed throughout the design process. However, even though the simulation tools are developed for the acoustical simulation and performance analysis, it is not always simple to integrate the simulation tools to whole design proce

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31

Jeong, Hyok. "Source and boundary conditions in finite difference time domain modelling of room acoustics." Thesis, University of Salford, 2010. http://usir.salford.ac.uk/26737/.

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This project deals with several issues on the use of Finite Difference Time Domain (FDTD) method for room acoustic simulation. The main features covered are: source implementation; modeling of frequency dependent boundary conditions; and modeling of arbitrary wall geometry and associated errors in stair-case approximations. A number of techniques for modeling frequency dependent boundary conditions in the FDTD method are presented and are validated against the Boundary Element Method (BEM). The results show that a Z-transform based multi-degree-offreedom model is the most effective for frequen

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Pike, C. D. "Timbral constancy and compensation for spectral distortion caused by loudspeaker and room acoustics." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/809800/.

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On its path to the ear the spectral envelope of a sound is modified by transmission channels. These modifications can distort, or colour, sound timbre preventing recognition. Research by Olive et al. (1995) suggests that perceptual mechanisms remove spectral colouration caused by loudspeakers and rooms. This compensation is apparent when listening in the real-world but not in laboratory tests and may be a result of the longer time courses involved in real-world listening. Experiments conducted as part of this thesis confirm that compensation for loudspeaker/room colouration occurs using a real

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VISENTIN, Chiara. "A NUMERICAL AND EXPERIMENTAL VALIDATION OF THE DIFFUSION EQUATION APPLIED TO ROOM ACOUSTICS." Doctoral thesis, Università degli studi di Ferrara, 2012. http://hdl.handle.net/11392/2389432.

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The recently developed room-acoustics diffusion model relies on the basic as- sumptions of the Fick’s law of diffusion, relating the acoustic intensity and the energy density inside a room, through a constant diffusion coefficient. This study investigates the relationship between these two acoustic quantities in the station- ary state, for the particular case of long rooms with different amounts of boundary scattering, by means of numerical simulations and experimental measurements. The numerical study was performed with a sound particle-tracing code. The ex- periments consist in measur

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Round, David Peter. "Application of DSP methods to sound reproduction." Thesis, Bangor University, 1996. https://research.bangor.ac.uk/portal/en/theses/application-of-dsp-methods-to-sound-reproduction(89e56009-ab09-4054-9a6b-e5181507a3f4).html.

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Courtis, N. J. "Some aspects of speech intelligibility enhancement with particular regard to adaptive filtering and room acoustics." Thesis, University of Hertfordshire, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356313.

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Thornock, Brian Trevor. "Comparison and Development of Methods for Measuring Directional Sound Arrivals in Rooms /." Diss., CLICK HERE for online access, 2009. http://contentdm.lib.byu.edu/ETD/image/etd3183.pdf.

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Pospíšil, Vojtěch. "Kostel na Lesné." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265717.

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This theoretical diploma thesis deals with room acoustics and the closely related issue of reverberation. Part of the work is a drafting of acoustic modifications of the church based on manual calculation, which was further modified in a specialized software Odeon Room Acoustics Program. For the surrounding buildings of the church was created a study of the noise in a program Hluk+ in order to assess what will be the noise impact of this new building on its surroundings. On the basis of specialization was created several proposals for the design of the church. The approximate proposal of the d

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Zagala, Franck. "Simplified Acoustic Simulations and Virtual Acoustics : Contributions to Virtual Navigation for the Visually Impaired." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS254.

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Cette thèse s'inscrit dans projet RASPUTIN et s'intéresse au développement, à l'évaluation et à l'utilisation d'outils de simulation pour la réalité virtuelle acoustique dans le but d'aider les déficients visuels à préparer des navigations dans des lieux non-familiers. Alors que plusieurs outils d'assistance tels que des dispositifs de substitution sensorielle permettent de fournir des informations spatiales lors de navigations, une approche alternative consiste à concevoir un moteur de simulation et d'auralisation de l'acoustique d'un lieu en temps réel que les déficients visuels pourraient u

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Jesus, Ana Sofia Dâmaso Mateus de. "Comportamento acústico de salas para o ensino musical no Algarve: a perspetiva dos vários intervenientes." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/14556.

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O comportamento acústico de salas para música é um tema que tem vindo a destacar-se ao nível da engenharia nas últimas décadas. Todavia, no que diz respeito a questões musicais mais específicas, o mesmo não tem vindo acontecer. Desta forma, optou-se por realizar um estudo sobre a perspetiva dos professores de música relativamente à qualidade acústica das salas onde lecionam. Estudo esse que pretendeu aferir as características favoráveis a este tipo de salas para que na opinião dos professores privilegiassem o ensino musical. Mediante a pouca bibliografia existente, a investigação direcionou-se

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Xu, Buye. "Generalized Acoustic Energy Density and Its Applications." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2339.

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The properties of acoustic kinetic energy density and total energy density of sound fields in lightly damped enclosures have been explored thoroughly in the literature. Their increased spatial uniformity makes them more favorable measurement quantities for various applications than acoustic potential energy density (or squared pressure), which is most often used. In this dissertation, a new acoustic energy quantity, the generalized acoustic energy density (GED), will be introduced. It is defined by introducing weighting factors, α and 1 − α, in the formulation of total acoustic energy density.

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Marros, Fernanda. "CARACETERIZAÇÃO ACÚSTICA DE SALAS PARA PRÁTICA E ENSINO MUSICAL." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/7771.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The musician needs to properly perceive the sound in rooms where it operates, either in an environment designed to be performed or to studying and practice music. For this, it is necessary that these sites are acoustically appropriate, enabling the development and enhancement of musical sound perception. In this study six classrooms of the music school of UFSM were characterized by acoustic impulse response measurements and computer simulation, and considered the user s feedback through questionnaires. The questionnaires enabled to

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Nestoras, Christos. "The assessment of speech intelligibility in room acoustics for efficient application in computer modelling and improved enclosed spaces." Thesis, London South Bank University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618686.

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Schutte, Michael [Verfasser], and Benedikt [Akademischer Betreuer] Grothe. "Aspects of room acoustics, vision and motion in the human auditory perception of space / Michael Schutte ; Betreuer: Benedikt Grothe." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2021. http://d-nb.info/1241963762/34.

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Santos, Marta Antão Rodrigues dos. "Qualidade acústica de escolas de música do Algarve: análise e proposta de medidas de melhoria." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/11823.

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As salas de aula para prática musical são locais em que a exigência de conforto acústico é essencial, permitindo assim, garantir uma boa sonoridade e perceção de todas as gamas sonoras emitidas pelos instrumentos musicais. Este trabalho visa a avaliação acústica de salas de aula de oito escolas de música do Algarve (Academia de Música de Lagos, Conservatório de Portimão Joly Braga Santos, Conservatório de Música de Lagoa, Conservatório de Música de Albufeira, Conservatório Regional do Algarve Maria Campina, Conservatório de Música de Olhão, Academia de Música de Tavira e Conservatório Regional

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Wahlborn, Felicia. "Rum för musik." Thesis, KTH, Arkitektur, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146755.

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Detta examensarbete behandlar rumsakustik som en viktig del i skapandet av en arkitektur för framförande av musik, samt upplevelsen av ljud. Projektet bygger på en idé att skapa nya möjligheter att skapa och framföra musik för musiker, vars arbete ofta begränsas av lokalbrist eller av olika föreningars intresseområden. Idén har utvecklats till en hybrid mellan ett nytt musikmuseum och ”Musikplatsen” - en plats för skapande och framförande av musik med liten publik. Musikplatsen blir en del av det nya musikmuseets program för att skapa nya samarbeten och ekonomisk hållbarhet. Projektet är place

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46

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.

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Brum, 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.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The 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

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Johansson, Anders. "Acoustic Sound Source Localisation and Tracking : in Indoor Environments." Doctoral thesis, Blekinge Tekniska Högskola [bth.se], School of Engineering - Dept. of Signal Processing, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00401.

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With advances in micro-electronic complexity and fabrication, sophisticated algorithms for source localisation and tracking can now be deployed in cost sensitive appliances for both consumer and commercial markets. As a result, such algorithms are becoming ubiquitous elements of contemporary communication, robotics and surveillance systems. Two of the main requirements of acoustic localisation and tracking algorithms are robustness to acoustic disturbances (to maximise localisation accuracy), and low computational complexity (to minimise power-dissipation and cost of hardware components). The

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Norberg, Hanna. "Utredning av Umeå universitets gemensamma föreläsningssalars ljudmiljöer och rumsakustik : Med fokus på taluppfattbarhet, efterklangstid samt installationsbuller." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144182.

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The purpose of this report was to investigate the sound environments in lecture halls at Umeå University and to assess to whether the sound environments in these lecture halls are satisfactory and whether have good speech intelligibility or not. Based on a web survey, a number of lecture halls were selected for this investigation, namely Hörsal A, Hörsal C, N280, KB.F3.01, Ma121, KB.E3.01, N340 and N335. Assessing room acoustics includes many relevant parameters, therefore a delimitation has been made. Only installation noise, reverberation time and speech intelligibility have been investigate

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Paliesek, Jakub. "Vliv akustiky prostředí na úspěšnost rozpoznávače řeči." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445549.

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This diploma thesis deals with impact of room acoustics on automatic speech recognition (ASR) accuracy. Experiments were evaluated on speech corpus LibriSpeech and database of impulse responses and noise called ReverbDB. Used ASRs were based on Mini LibriSpeech recipe for Kaldi. First it was examined how well can ASR learn to transcribe in selected environments by using the same acoustic conditions during training and testing. Next, experiments were carried out with modifications of ASR architecture in order to achieve better robustness against new conditions by using methods for adapation to

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