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Composite Subband Adaptive Speech Enhancement
Hovorka, Jaroslav ; Vlček, Čestmír (referee) ; Křesálek,, Vojtěch (referee) ; Sysel, Petr (advisor)
The thesis deals with single channel and multiple channel algorithms for speech enhancement. The goal of this work is to perform the deep analysis of both single channel and multiple channel algorithms in sense of their behaviour in noisy environment of combat vehicles and platforms. Based on this analysis a new composite speech enhancement algorithm will be designed. This new approach is expected to increase quality of the processed speech in military communications systems. These systems are characterised by their operation under very noisy conditions where background noise is very high and signal-to-noise ratio extremely low. These noisy conditions are typical for the range of military and combat platforms and vehicles.
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Maize fertilizing in terms of selected agricultural company
HOVORKA, Jaroslav
My diploma thesis was focused on the corn nutrition in practical conditions of the agricultural company. The evaluation was made with the help of an experiment, which was made at an altitude of 508 metres, the experimental land belongs to the agricultural company Jasanka s.r.o. The experiment is based on the nutrition of corn with different fertilization doses. Various parameters characterizing plant development were observed during the vegetation season. The final results of this experiment showed the overall differences between the fertilized variants. For all the evaluated indicators, a decreasing tendency with a decreasing amount of nitrogen was confirmed. It is clear that all parameters of the best results were obtained for fertilizer variant 1 (58.5 kg N*ha-1). Similarly, for all parameters, the gradual decrease of values decreasing the fertilizer dose is evident.
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Composite Subband Adaptive Speech Enhancement
Hovorka, Jaroslav ; Vlček, Čestmír (referee) ; Křesálek,, Vojtěch (referee) ; Sysel, Petr (advisor)
The thesis deals with single channel and multiple channel algorithms for speech enhancement. The goal of this work is to perform the deep analysis of both single channel and multiple channel algorithms in sense of their behaviour in noisy environment of combat vehicles and platforms. Based on this analysis a new composite speech enhancement algorithm will be designed. This new approach is expected to increase quality of the processed speech in military communications systems. These systems are characterised by their operation under very noisy conditions where background noise is very high and signal-to-noise ratio extremely low. These noisy conditions are typical for the range of military and combat platforms and vehicles.
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Maize growing in the Czech Republic
HOVORKA, Jaroslav
This bachelor thesis deals with the cultivation and use of maize (Zea mays) in the Czech Republic over the past 24 years. The work is written like a literature review. The maize is irreplaceable crop in human nutrition and it is widely used for feeding, industrial use and for energy purposes. Thanks to wide range of hybrids the maize is grown in different climates, with the specific goal of growing and high yield potential. Maize is widely grown crop in our country. There have been changes in the cultivation and use of maize from 1990 to 2013. Thanks to these changes, the Czech Republic became an exporter of maize grain. From the collected data and information, it can be stated that sowing areas are growing. This fact contributed to the construction of agricultural biogas plants, because the maize is the major substrate. Agrotechnics of maize is continually developing and its changes lead to reduction in soil erosion and to higher returns. Other changes that have occurred in agrotechnics, sowing areas, yields and the reasons for those changes are solved in this work.
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