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Loudspeaker System for Reproduction of Low Frequencies with Directional Radiation
Skvaril, Šimon ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
Final product of this work is design of speaker baffle which will have directional radiation at low frequencies. In the course of the work, propagation of sound waves and their beaviour at obstacles are described. The computational method FDTD and the K-wave toolkit for MATLAB, which uses this method, are described. In MATLAB a virtual model of speaker baffle is created and proposed solution is verified. Next step is creation of scaled model of speaker baffle on which agreement of theoretical computations with real-world measurment is verified. Final step is creation of prototype of speaker baffle,, whose parameters are measured, including polar response.
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Design and Realization of Acoustic Treatment of Small Recording Studio
Tkadlec, Vojtěch ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis deals with the topic of acoustic properties of an enclosed space, their detection and modification. The thesis examines the acoustic properties of a small enclosed space, which were determined by simulation using a virtual 3D model and subsequently verified by measurement. After finding out the properties, a substantial part was also devoted to their modification, where the task was to design the acoustic elements so that the resulting length of the reverberation time corresponds to the optimal values for a small recording studio. The design of the elements is followed by their construction, followed by a re-measurement of the space. Furthermore, the work summarizes the principles of modeling and simulation of 3D models.
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Localization and Rendering of Sound Sources in Acoustic Fields
Khaddour, Hasan ; Rakús, Martin (referee) ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
Disertační práce se zabývá lokalizací zdrojů zvuku a akustickým zoomem. Hlavním cílem této práce je navrhnout systém s akustickým zoomem, který přiblíží zvuk jednoho mluvčího mezi skupinou mluvčích, a to i když mluví současně. Tento systém je kompatibilní s technikou prostorového zvuku. Hlavní přínosy disertační práce jsou následující: 1. Návrh metody pro odhad více směrů přicházejícího zvuku. 2. Návrh metody pro akustické zoomování pomocí DirAC. 3. Návrh kombinovaného systému pomocí předchozích kroků, který může být použit v telekonferencích.
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Simulation of Sound Field of Sound System with Multiple Speakers in Closed Space
Brůna, Michal ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
In this thesis basic principles of sound system design are presented. A software simulation in Matlab is written for prediction of sound field with sources of real directivity in both freefield and in a closed room using velocity potential. Reflections are simulated using mirror sources of first and second order. Frequency dependent sound absorption coefficients are implemented in the simulation. There is a GUI designed to operate on most common horizontal configurations. Those are then evaluated and advantages and dissadvantages are demonstrated using the simulation software.
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Loudspeaker System for Reproduction of Low Frequencies with Directional Radiation
Skvaril, Šimon ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
Final product of this work is design of speaker baffle which will have directional radiation at low frequencies. In the course of the work, propagation of sound waves and their beaviour at obstacles are described. The computational method FDTD and the K-wave toolkit for MATLAB, which uses this method, are described. In MATLAB a virtual model of speaker baffle is created and proposed solution is verified. Next step is creation of scaled model of speaker baffle on which agreement of theoretical computations with real-world measurment is verified. Final step is creation of prototype of speaker baffle,, whose parameters are measured, including polar response.
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Design and Realization of Acoustic Treatment of Small Recording Studio
Tkadlec, Vojtěch ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
This bachelor thesis deals with the topic of acoustic properties of an enclosed space, their detection and modification. The thesis examines the acoustic properties of a small enclosed space, which were determined by simulation using a virtual 3D model and subsequently verified by measurement. After finding out the properties, a substantial part was also devoted to their modification, where the task was to design the acoustic elements so that the resulting length of the reverberation time corresponds to the optimal values for a small recording studio. The design of the elements is followed by their construction, followed by a re-measurement of the space. Furthermore, the work summarizes the principles of modeling and simulation of 3D models.
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Simulation of Sound Field of Sound System with Multiple Speakers in Closed Space
Brůna, Michal ; Husník, Libor (referee) ; Schimmel, Jiří (advisor)
In this thesis basic principles of sound system design are presented. A software simulation in Matlab is written for prediction of sound field with sources of real directivity in both freefield and in a closed room using velocity potential. Reflections are simulated using mirror sources of first and second order. Frequency dependent sound absorption coefficients are implemented in the simulation. There is a GUI designed to operate on most common horizontal configurations. Those are then evaluated and advantages and dissadvantages are demonstrated using the simulation software.
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Certifikovaná metodika digitalizace všech typů obrazových zdrojů filmových materiálů
Jícha, Marek ; Šofr, Jaromír ; Myslík, Jiří ; Pecák, Josef ; Macák, Jiří ; Weiser, Antonín ; Mathé, Ivo ; Páta, Petr ; Rejholec, Pavel ; Neubauer, Petr ; Fliegel, Karel ; Novák, Miloslav ; Rund, František ; Husník, Libor ; Gunaratna, Vidu ; Šimunek, Jiří ; Vítek, Stanislav ; Procházka, Martin ; Souček, Daniel ; Piškula, Martin ; Jedlička, Miroslav ; Stuchlík, Zdeněk
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Certifikovaná metodika stanovení korelace mezi kolorimetrickými parametry u filmového obrazu a úrovněmi v R, G, B kanálech u digitálních obrazových souborů tak, aby kolorimetrické hodnoty obou obrazů na plátně si vzájemně odpovídaly
Jícha, Marek ; Pecák, Josef ; Myslík, Jiří ; Weiser, Antonín ; Šofr, Jaromír ; Macák, Jiří ; Rejholec, Pavel ; Neubauer, Petr ; Mathé, Ivo ; Páta, Petr ; Fliegel, Karel ; Novák, Miloslav ; Rund, František ; Husník, Libor ; Gunaratna, Vidu ; Jedlička, Miroslav ; Šimunek, Jiří ; Vítek, Stanislav ; Procházka, Martin ; Souček, Daniel ; Piškula, Martin
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Certifikovaná metodika stanovení korelace mezi jasy na plátně u filmového obrazu a úrovněmi v jasovém kanálu u digitálních obrazových souborů tak, aby jasy obrazu na plátně u digitální projekce odpovídaly jasům u filmové projekce
Jícha, Marek ; Pecák, Josef ; Myslík, Jiří ; Weiser, Antonín ; Šofr, Jaromír ; Macák, Jiří ; Rejholec, Pavel ; Neubauer, Petr ; Mathé, Ivo ; Páta, Petr ; Fliegel, Karel ; Novák, Miloslav ; Rund, František ; Husník, Libor ; Gunaratna, Vidu ; Jedlička, Miroslav ; Šimunek, Jiří ; Vítek, Stanislav ; Procházka, Martin ; Souček, Daniel ; Piškula, Martin
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