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Up-firing loudspeakers for 3D Audio
Pešek, Marko ; Schimmel, Jiří (referee) ; Balík, Miroslav (advisor)
This bachelor theses dealing with study multichannel 3d audioformat Dolby Atmos and parameters of up–firing loudspeakers, which assures overhead audiosignal reproduction coming towards hearer. According to the knowledge is made proposal of up–firing loudspeakers, fabrication and measurement their properties.
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The Design Methods of Equipments for Audio
Kondler, Radim ; Vrba, Kamil (referee) ; Mišurec, Jiří (advisor)
The work is focused on equipment used in audio, such as a loudspeaker crossovers, amplifiers and preamplifiers. There are theoretically described loudspeaker crossovers, their parameters, types of structures derived from the frequency filters with their parameters. Further deals about audio amplifiers and both voltage and power, their theories, parameters, and distribution.
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Database of recordings for detection of voice activity
Pelikán, Pavel ; Hudec, Antonín (referee) ; Míča, Ivan (advisor)
This thesis deals with voice activity detection (VAD) and requirements for creating a speech database. One of the existing tools for marking recordings was chosen. On the basis of the gained knowledge, database of isolated words, sentences, text and spontaneous speech was created. The practical part consists of a detailed description of database and mark creation. Furthermore, the thesis deals with the conversion of marks into Matlab. There are also some auxiliary scripts for operations with marks. Prepared and a database was created in an anechoic chamber and includes recordings from 16 speakers.
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Design of sound reinforcement system
Košarišťan, Miroslav ; Hruboš, Zdeněk (referee) ; Brančík, Lubomír (advisor)
This Master´s thesis deals with sound apparatus. The first part is a theoretical explanation of the main part of the equipment, such as microphones, amplifiers, proofreaders, switches and speakers. Another section is devoted to the design itself, starting with the block diagram which is followed by the design of single important parts. These are made as PCB. For select-ed diagrams there is an example of PSpice program simulations and the measurement of important characteristics. The essential part of the work also addresses constructional pro-cessing of apparatus. At the end of this thesis some examples of the PCB are introduced.
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