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Software for simulation of acoustic pressure distribution
Hampl, Filip ; Schimmel, Jiří (referee) ; Kurc, David (advisor)
This semestral thesis deals with the creation of software to simulate the distribution of sound pressure. Basic principles of sound propagation are explained which are necessary for an understanding of the issue. There is a description of the velocity potential and its application in creating simulations. Another issue is the introduction of wavefield synthesis, which is essentially a technology for simulation of primary sources with secondary sources. Advantages of wavefiled synthesis are discussed as well as disadvantageous aspects. The practical part of this work is creating a user interface in Matlab, which allows user to plot the distribution of sound pressure of one or interaction of more emitters. Another possible outcome is to display the directional characteristics of real resources. At the very end of the work the direction of further work is outlined.
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System for Recording and Repeating of Events for Sound Systems
Klobása, Jiří ; Černocký, Jan (referee) ; Zemčík, Pavel (advisor)
This thesis deals with the design and implementation of system for recording and repeating of events for audio systems. The introductory part is devoted to the study of sound systems, their user interfaces and communication protocols that are used by audio systems. Hereafter the description of essential features of Mac OS X, as well as the characteristic of its user interface and principles of development on this platform, are given. The core of the thesis consists of the design of system for recording and repeating of events and the concept of events which specifies the reprezentation of events in the system and their subsequent processing. In~the end of the thesis is presented the implementation of the designed system for Mac OS X with respect to possible extensions of the system and its features.
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Study of acoustic properties of enclosed rooms
Kovařík, Filip ; Fišarová, Zuzana (referee) ; Šťastník, Stanislav (advisor)
The bachelor thesis deals with the acoustics of enclosed spaces, its behaviour and impact on the clarity and quality of presentation. Here is written transmission of acoustic energy, behaviour of spatial and building acoustics, which builds their diagnostic methods. The work also includes legislative requirements stipulated by the acoustics of enclosed spaces and the achievement of these requirements using different types of acoustic absorption capacity of materials, applications, and more specifically their basic properties. In the experimental part, the measurement of reverberation time in a selected room and the adaptation of acoustic properties so that attained legislative requirements
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Complete design of three-way speakers
Jalový, Michal ; Petržela, Jiří (referee) ; Slezák, Josef (advisor)
This project describes complete design of Three-way speakers. The introduction discussed the basic theoretical knowledge to the understanding of loudspeaker system design issues with regard to the physiology of hearing, the theory of acoustics, speaker characteristics, types of enclosures and the use of switches. Furthermore, based on the formula calculated parameters of a loudspeaker cabinet and speaker points to the loudspeaker of the proposed speakers.The proposal also relies on the specific measurement properties of the selected speaker impedance. Finally all data are presented for practical implementation speakers.
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Player for iPhone for Educational Purposes
Klobása, Jiří ; Polok, Lukáš (referee) ; Beran, Vítězslav (advisor)
This thesis deals with the design and implementation of mobile application for iPhone that serves as a music player. The application works with meta-information to a music song and suggests their use in the process of memorization. The thesis is divided into chapters, starting with the characteristics of the target platform iOS, user interface design and its testing, principles of creating computer music and sound. The core of this thesis is to design a user interface along with the structure and use of meta-information related to a song. At the end of the thesis there is described the implementation of the application, the tests performed and possibilities for further improvements of the application.
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Soundspce
Jandová, Eva ; Kopec, Jakub (referee) ; Vítek, Jiří (advisor)
The aim of this work is to research the relationships between abstract musical space and physical space, to explore the various possibilities of connecting sound, light and matter in space, their interaction and unfolding over time. The knowledge and outputs will later be applied in the design of a cultural object providing a visual and acoustic experience with an emphasis on human perception.
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Simulation of Sound Field of Multiple Sound Sources
Kohoutek, Jan ; Kurc, David (referee) ; Schimmel, Jiří (advisor)
The main task of this bachelor thesis is description of interaction of sound waves in field. To understand the whole topic important physical laws related to sound waves propagation are defined. It also deals with frequency and directional response of ideal point source which compares with real measured responses of direct-radiating electrodynamic loudpeaker. Thesis are shown some examples of sound fields on which are specified their behavior. It also desribe main properties for right functionality of line-array source. In practical part are measured acoustic pressure values which lead to creating a interpolation map of sound pressure level. This obtained map was compared with theoretical acoustic field. Part of this bachelor thesis is program which enable to simulate acoustic field created under variable sound and environment properties.
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Simulation of Noise Emitted by a Single-stage Gearbox
Motl, Daniel ; Hadaš, Zdeněk (referee) ; Lošák, Petr (advisor)
The level of noise and vibration of gearboxes is one of the most important parameters for today´s customers. This thesis deals with mathematical acoustic behavior modelling and its contribution to the gearbox design using finite element method. The process is presented at three computations models. Two of those were validated with experimental measurement. Acoustic analysis were performed with software FFT ACTRAN.
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Mechanical waves of air particles set in motion by a vibrating body
Coufalová, Kristýna ; Suchánek, Jiří (referee) ; Klodová, Lenka (advisor)
The work deals with the sound in its various forms outside the music scene in connection with fine arts. Experimentally modulates different positions between visual and audio elements. Do the musical components of shows and exhibitions only serve to manipulate emotions, or are they original autonomic works? The artistic result will be the creation of an experimental situation of direct confrontation of sound with live action. The work was significantly affected by the coronavirus pandemic, so it deals more specifically with sound/music in the virtual space and the issue of their transmission.
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