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Modification of Vocal Tracks in SW Post-Production of Music
Trkal, Tomáš ; Beran, Vítězslav (referee) ; Černocký, Jan (advisor)
This thesis describes a design and an implementation of a vocal tracks processing application. The application consists of several sub-modules representing audio processors and effects. It is implemented as a plugin created with the VST technology. The plugin provides a simple control system and an integrated database of presets which help mainly less experienced users to significantly speed up the process of processing the vocal tracks. The user evaluation shows that application is successful both in creating demos and professional mixing of music tracks.
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Musical multi effects analysis
Masár, Igor ; Kubásek, Radek (referee) ; Friedl, Martin (advisor)
This work deals with guitar effect and guitar sound in general. Most widely used effects are described as well as their output time courses are simulated. There is a comparison of analog and digital effects. There is also explained the principal of guitar multiefects, described all parts of guitar efect chain and determined key parameters, which has the main impact on quality of final sound. It is used to describe a methodology for measuring multi-effects and the results obtained by this measurement. The last part deals with psychoacoustic measurements.
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Compensation of geometric distortion of electrophoretic gel image
Dvořáček, Tomáš ; Vítek, Martin (referee) ; Škutková, Helena (advisor)
This master thesis is engaged in problematics of creation and compensation of geometric distortions in 1D agarose electrophoresis. This master thesis analyze the problematics of cause of these distortions and summarize the theory needed for compensation of these distortions. Based on acquired theory and created electrophoretic phantoms, the master thesis contains several suggestions for compensation of incurred distortions. These suggestions are recreated into functions, which are connected into a functional user interface for gel image analysis and geometric distortions compensation.
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Tube microphone preamplifier
Čacký, Adam ; Hruboš, Zdeněk (referee) ; Brančík, Lubomír (advisor)
The theme of the master´s thesis is design a microphone preamplifier which uses vacuum tube as a main amplifying element. Part of the work is theoretical assumptions for the optimal design and implementation of peripheral involvement, comparing the properties of components used and the resulting parameters of modeled device. The thesis also includes a proposal of the source unit for supplying all parts of the preamplifier. The results are accompanied by circuit simulations and laboratory measurements of the main parameters of the designed device.
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ECG Signal Distortion Measures
Požár, Pavel ; Kozumplík, Jiří (referee) ; Vítek, Martin (advisor)
This master's thesis deals with electrocardiogram and its distortion, which causes errors, due to which a doctor can make a wrong diagnosis. In the theoretical part electrocardiogram is briefly described, further theory of wavelet transform, introduction to the signal compression and some information about ECG delineation. Methods used for the signal evaluation and therefore determination of the distortion size are described in the main theoretical part. This thesis contains known methods and also a method of own design based on the ECG delineation. Some of the described methods are checked in the practical part. These methods are tested for two different compression algorithms, which cause various distortion. In the final part distortion was tested on the influence on setting the wrong diagnosis.
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Suppression of powerline interference in ECG signals
Lacko, Michal ; Hrubeš, Jan (referee) ; Kozumplík, Jiří (advisor)
This project includes survey of various methods ECG signal filtering, to suppress of powerline interference. It is specialized especially on properties which affecting the quality of filtration. The main essence of project is evaluation of the proposed methods in terms of quality and the least possible distortion of the resulting ECG signal. The work is focused on linear, adaptive filtering and filtering using discrete wavelet trans-form. Signal processing and evaluation of descriptive parameters are transferred using the graphical interface GUI in the program Matlab 7.7.0 ( R2008b ).
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Measurement of gradient magnetic field decay in MR tomograph
Kubásek, Ondřej ; Kubásek, Radek (referee) ; Bartušek, Karel (advisor)
The objective of my thesis is to measure magnetic field gradient decay in an MR tomograph, process and evaluate the data measured and analyse the issue. The theoretical section focuses on the reasons for the gradient distortion which has a negative impact on NMR measuring techniques and it also describes options to eliminate the negative effects, focusing mainly on pre-emphasis filtration. It also lists methods of gradient magnetic field measuring. The practical section contains results of magnetic field decay measurements taken with the tomograph in the Institute of scientific instruments of the Academy of sciences in Brno using the method of instantaneous frequency with and without pre-emphasis compensation. The data are processed with MAREVISI and MATLAB programmes. MATLAB is used to develop a modern method of filtration to eliminate noise in useful signal leading to more accurate measurements of MR magnetic fields. This filtration uses a method of time-dependent variable thresholds and two-channel filter banks. MATLAB is also used to design a programme for approximation of the measured gradient magnetic field decay. The decay must be approximated in order to obtain time constants and the degree of exponential decay, which serve to set up the pre-emphasis compensation.
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Image flow time sampling
Němec, Miroslav ; Kolář, Radim (referee) ; Drastich, Aleš (advisor)
The aim of this Master’s thesis is to develop a theoretical introduction to the issue of the image flow time sampling, taking into account the various factors that affect sampling. Furthermore, there is proposed idea diagram of the model, which will simulate the events described, and created the model in the programming environment Matlab. Finally, there are defined the labs that will support teaching dealing with the imaging systems.
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Influence of welding parameters on a transverse distortion
Harmaniak, Daniel ; Vaněk, Mojmír (referee) ; Daněk, Ladislav (advisor)
In my bachelor thesis is described a theory of internal tensions and distortions during welding. My thesis also contains technological and structural principals used to minimalize them and methods used for elimination of internal tensions. There are also included calculated methods depending on the different parameters of welding concerning transverse distortions. A butt weld was done between two sheets of tin and its transverse shrinkage was measured. The measured value was compared with the calculated one.
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Prevention and rehabilition of ankle sprains by basketball players
KRAMLOVÁ, Kateřina
The submitted Bachelor Thesis elaborates the issue of prevention and physiotherapy of distortion of the talocrural (ankle) joint of basketball players. The work focuses on two main objectives in order to find out which of the fixation aids is more efficient in preveting distortion of talocrural (ankle) joint and compiles a schedule and physioterapeutic programme for sportsmen ? basketball players suffering from the distortion of the talocrural (ankle) joint. Methods of qualitative research including observation techniques, kinesiological examination and semi-standardized interview were applied in this research, following the secondary analysis of acquired data. The results are processed in a form of casuistries on a basis of which individual physiotherapeutic plans for the tested persons were elaborated. Therapy for renewing the function of lower limbs took place according to the aforesaid plans. At the end of the physiotherapy, by means of an output examination of the monitored persons, it was identified that the extent of movement in the joint was improved, their muscular strength increased and muscular imbalance was removed. The Bachelor Thesis might become a quide for basketball players giving them necessary instructions about what to do in order to improve the stability of talocrural (ankle) joint during physical stress in the course of training or a match, what fixation aids they should use and how they should strengthen their muscles of lower limbs for prevention of problems. This work may also be at the service of future and current physiotherapists in practice and a source of training for the non-professional public.
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