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Design of 10-channel audio equalizer with optimization of frequency characteristic and spectral audio analyzer
Štěrba, Václav ; Dvořák, Radek (referee) ; Šotner, Roman (advisor)
This work deals with the design of a 10-zones equalizer with optimized frequency characteristics with a spectrum audio analyzer. In this work the problem of processing audio signals using equalization for filtering the interference frequencies, correction of frequency cover signal boost or suppression of the required zones of the audible spectrum are also analyzed. The influence of subjective perception of sound intensity of the audio signals reproduction and its use in working with equalizer is discussed too. The work describes the principles and usage of the audio-analyzer as a tool for the optimization of the audio equalization setting when ensuring the appropriate listening conditions of music reproduction, spoken word, sounds, etc. It also focuses on the signal source for testing audio-chains, their generation and measurement using the audio analyzer. The equalizer equipment, audio-analyzer generator of reference signals equipment and power supply are designed as a single unit.
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Defibrillator
Kubů, Veronika ; Rampl, Ivan (referee) ; Chmelař, Milan (advisor)
This bachelor thesis is devided to six thematic areas. At the beginning we deal with the anatomy of the heart, as it is especially important for a good understanding of cardiac muscle activity. In the following part I summarize the heart activity in terms of both biological and of electrical activity, that occurs during its operations. Furthermore, it is necessary to analyze the potentially dangerous conditions occurring during heart aktivity and their solutions with the help of electrical discharge and without it. The most important part of the whole work is a defibrillator itself. First, I summarize the theoretical knowledge and then I focus on the design of an external defibrillator, a device intended for use by professional medical personnel or by the general public. Finally, it is important to note warnings resuting from manipulating with electrical current.
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Optimization of manufacturing process in a selected company
Koníček, Jan ; Císařová, Michaela (referee) ; Štroner, Marek (advisor)
Bachelor thesis is dealing with optimalization of manufacturing process in engineering company Kovokon Popovice s.r.o. First part is fucused on streamlining of material flow by using circular method and triangulation method simple, from which there are three variants of workplace layouts and the most advantageous one is selected. In the next phase of optimalization, a block diagram is compiled for original prodiction and subsequently for the modified one by using machining center replacing previous machines. Capacity calculations are then calculated for the block diagrams, which express percentage use of workplace and numbers of workers needed to produce selected component. In the last part of optimalization, the requied size of the central material werehouse, number of cranes and forklifts are calculated.
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Control of water supply for a house
Chvátal, Michal ; Richter, Miloslav (referee) ; Macho, Tomáš (advisor)
The diploma thesis deals with the design and implementation of the system that will control the water supply for the family house and its garden. The system aslo allows you to store a history that can be viewed via the web interface. The web interface also allows you to set system parameters and monitor the current status.
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Numerical Integration .NET Graphical Editor
Kučera, Martin ; Kunovský, Jiří (referee) ; Šátek, Václav (advisor)
This thesis deals with the numerical solution of systems of first-order differential equations with initial conditions, using chosen one-step methods. It describes the design, implementation and testing of the application that is able to use these methods to solve the tasks entered in form of block schemes. The first part is devoted to an introduction of the topic, it provides an example of calculation of several steps using chosen methods and compares the results. A substantial part of the report deals with form and function of each block used in the block schemes editor and the transformation process of input data to data usable for creating simulation. The penultimate chapter demonstrates the accuracy of the final application. It shows solutions of a few simple examples of practical usage. This chapter also includes comparison with other simulation systems.
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Measurements of the DVB-T Digital Television Receiver
Kobza, Jaromír ; Džubera, Jakub (referee) ; Kratochvíl, Tomáš (advisor)
This thesis is focused on a receiver for digital television broadcasting set-top box, mainly on its features, parameters and measurement. The important point of this work is the possibility to analyze and visualize the parallel transport stream in the same time and the solution of this problem. The principle of tuner and its measuring is deeply discussed. The text is supported with oscilloscope screenshots in particular parts of decoding stream. The set-top box is modified for laboratory measurement purpose and the transport stream output is added. An example laboratory exercise was created as a part of this work.
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Optimization of manufacturing process in a selected company
Koníček, Jan ; Císařová, Michaela (referee) ; Štroner, Marek (advisor)
Bachelor thesis is dealing with optimalization of manufacturing process in engineering company Kovokon Popovice s.r.o. First part is fucused on streamlining of material flow by using circular method and triangulation method simple, from which there are three variants of workplace layouts and the most advantageous one is selected. In the next phase of optimalization, a block diagram is compiled for original prodiction and subsequently for the modified one by using machining center replacing previous machines. Capacity calculations are then calculated for the block diagrams, which express percentage use of workplace and numbers of workers needed to produce selected component. In the last part of optimalization, the requied size of the central material werehouse, number of cranes and forklifts are calculated.
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Control of water supply for a house
Chvátal, Michal ; Richter, Miloslav (referee) ; Macho, Tomáš (advisor)
The diploma thesis deals with the design and implementation of the system that will control the water supply for the family house and its garden. The system aslo allows you to store a history that can be viewed via the web interface. The web interface also allows you to set system parameters and monitor the current status.
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