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Digital Audio Signal Feature Extraction and Modification in Dynamic Plane
Kramoliš, Ondřej ; Sysel, Petr (referee) ; Schimmel, Jiří (advisor)
This thesis deals with basic methods of root mean square and peak value measurement of a digital acoustic signal, algotithms to measure audio programme loudness and true-peak audio level according to recommendation ITU-R BS.1770-1 and digital systems for control of signal dynamic range. It shows achieved results of root mean square and peak value measurement and results of implementation of dynamic processor with general piecewise linear non-decreasing static curve and algorithms according to recommendation ITU-R BS.1770-1.
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Reversing cross for flexo printing machine
Falta, Jan ; Mazal, Pavel (referee) ; Brandejs, Jan (advisor)
The aim of this work is to develop a new concept of the reversing cross for flexo printing machine SomaFlex Optima. Work includes a description of the machine, the basic description of the principle of flexography. There is explained the principle of turning the material, the current method of supplying air to the air cushion and the difference between the blower and compressor as an air source for the air cushion. Conceptual solution includes two variants, namely vertical and horizontal position of turning bars. For each alternative are described its advantages and disadvantages.
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Modern Trends in Turbocharging
Sůkal, Jan ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
This bachelor’s thesis deals with modern methods of internal combustion engine turbocharging. The reader is acquainted with basic principles of charging and motivation of its introduction into automotive industry. First part describes in detail design of turbocharger components with emphasis on modern development. In next chapter are mentioned the most common ways of boost control. Final part is focused on combined and multistage turbocharging systems as well as upcoming electric turbocharging technology.
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Gas heat pump
Krejsa, Petr ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This bachelor thesis deals with the description of heat pump technology (HP) and the gas heat pumps extension (GHP). The theoretical part contains an introduction, information of heat pump technology, presentation of gas heat pump technology powered by a natural gas combustion engine. The comparison of the known principal design is involved too. The calculation part deals with detailed balance of energy flows for the specific operating conditions of GHP unit. The last part compares the electrical and gas heat pump.
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Aircrafts auxiliary power units
Baran, Jan ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
This bachelors thesis describes concepts used airborne auxiliary power units (APU) with respect to the determination of the main advantages and difficultes in the construction of individual concepts. It also defines the trends in this area. Part of the thesis describes the possibility of using fuel cells as an energy source on board the airplane.
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Refrigeration systems in the food industry
Dvořák, Josef ; Katolický, Jaroslav (referee) ; Štětina, Josef (advisor)
Bachelor´s thesis is aimed at refrigeration systems in the industry which are used mainly in the food industry. Here are described individual parts that are refrigeration systems assembled. The work also contains summary of the ways you can make use of waste heat and also factors that have impact on economy of operation. The aim of work is to describe the basic analysis of thermodynamic cycles in the refrigeration systems which are displayed on the illustrative diagrams.
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Combined supercharging internal combustion engines
Melichar, Marek ; Mauder, Tomáš (referee) ; Štětina, Josef (advisor)
This bachelor’s thesis contains a basic division of various types of combined supercharging and a description of their functions. For the most common types of supercharging technologies there are listed specific examples of usage in the automotive industry. This thesis also contains a short overview of the history of supercharging and an analysis of ideal cycles supercharged internal combustion engines. One of the most important chapters of this thesis is thermal efficiency of supercharged engines and their comparison with naturally aspirated internal combustion engines.
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Passenger Vehicles Drive Unit Recent Development
Sedlář, Martin ; Svída, David (referee) ; Beran, Martin (advisor)
This bachelor’s thesis is an overview of modern drive units trends. The first part of this thesis demonstrates combusting engines sorting; the next main part is an overview of a few drive units which are characteristic for their categories. There is a comparison of two lower power class engine representatives and two higher power class representatives in final chapter. The conclusion summarizes described topic and expresses own opinion.
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Air to water heat pumps
Špatenka, Jindřich ; Weismanová, Júlia (referee) ; Hejčík, Jiří (advisor)
Topic of the bachelor thesis are heat pumps air - water. The first part deals with the principle of heat pump and development since the inception to the present day, as well as a brief indication of other types of heat pumps and their adventages and disadvantages. In the next part are selected heat pumps from different manufacturers achieved by heating factors, performance and other parameters. Followed by used circuits of heat pumps. In the third section are described the component parts of heat pumps and their distribution.
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