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Legislative Regulations for Vehicle Exterior Noise
Koštuřík, Vojtěch ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
This bachelor´s thesis deals with an overview of legislative regulations for vehicle exterior noise. Introduction is dedicated to acoustics and basic acoustic variables. Next, there are mentioned sources of external noise of vehicles and distribution vehicles by category. The following provides an overview of standards and legislative documents dealing with external noise of motor vehicles. These standards and documents also establish a methodology for measuring external noise, referred to in the following chapter. In the end, there is an assessment of development of legislation in the field of external noise.
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Digital camera noise analysis
Weszter, Juraj ; Druckmüller, Miloslav (referee) ; Štarha, Pavel (advisor)
In pictures taken with digital cameras, undesirable noise in the form of pixel-to-pixel image intensity variance is present. This thesis, after an introduction to digital image processing, describes the main sources of such noise and subsequently analyses image data recovered from selected camera devices via stochastic methods. Ultimately, a C# software implementing the portrayed methods is briefly presented.
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Noise in rail transport
Maňák, František ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor's thesis is about the noise of the rail transport, this thesis is focused on the noise, that is generated by trains on the track. This thesis includes analysis of dominant noise sources from rail transport, factors affecting noise and noise measures, which minimize noise from the rail transport as effectively as possible. These measures can be divided into active and passive, each measure has its own advantages and disadvantages. The conclusion describes an evaluation of current trends and considers the future possible development of noise measures.
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Noise sources of single phase induction motor
Knap, Zdeněk ; Janda, Marcel (referee) ; Ondrůšek, Čestmír (advisor)
This bachelor’s thesis is aimed to find sources of acoustic noise on a single-phase induction motors. Main focus is noise of electromagnetic origin and its actual connection to motor parameters. Noise frequencies are the key subjects of this work. Based on this literature research, it includes analysis of real single-phase induction motor in mathematical software MATLAB. In the end, there is a summary of rules for reduction of the noise caused by electromagnetic fields and list of dangerous frequencies for analyzed motor.
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Noise in rail transport
Maňák, František ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor's thesis is about the noise of the rail transport, this thesis is focused on the noise, that is generated by trains on the track. This thesis includes analysis of dominant noise sources from rail transport, factors affecting noise and noise measures, which minimize noise from the rail transport as effectively as possible. These measures can be divided into active and passive, each measure has its own advantages and disadvantages. The conclusion describes an evaluation of current trends and considers the future possible development of noise measures.
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Digital camera noise analysis
Weszter, Juraj ; Druckmüller, Miloslav (referee) ; Štarha, Pavel (advisor)
In pictures taken with digital cameras, undesirable noise in the form of pixel-to-pixel image intensity variance is present. This thesis, after an introduction to digital image processing, describes the main sources of such noise and subsequently analyses image data recovered from selected camera devices via stochastic methods. Ultimately, a C# software implementing the portrayed methods is briefly presented.
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Hlukové emise v chovu skotu
BLAŽEK, Petr
In my bachelor´s work I deal with the sources of noise in cattle breeding, noise emissions, welfare of animals and noise measurement. The first, the theoretical part focuses on the sound, noise and its sources, then on the cattle housing and its welfare. The second part, the practical one I focuse on the noise measuring of two choosen objects of cattle breeding, particularly dairy farming and processing of measurement results and comparison of the measured objects.
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Noise sources of single phase induction motor
Knap, Zdeněk ; Janda, Marcel (referee) ; Ondrůšek, Čestmír (advisor)
This bachelor’s thesis is aimed to find sources of acoustic noise on a single-phase induction motors. Main focus is noise of electromagnetic origin and its actual connection to motor parameters. Noise frequencies are the key subjects of this work. Based on this literature research, it includes analysis of real single-phase induction motor in mathematical software MATLAB. In the end, there is a summary of rules for reduction of the noise caused by electromagnetic fields and list of dangerous frequencies for analyzed motor.
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Legislative Regulations for Vehicle Exterior Noise
Koštuřík, Vojtěch ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
This bachelor´s thesis deals with an overview of legislative regulations for vehicle exterior noise. Introduction is dedicated to acoustics and basic acoustic variables. Next, there are mentioned sources of external noise of vehicles and distribution vehicles by category. The following provides an overview of standards and legislative documents dealing with external noise of motor vehicles. These standards and documents also establish a methodology for measuring external noise, referred to in the following chapter. In the end, there is an assessment of development of legislation in the field of external noise.
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Noise in various types of parlors.
FÁK, Jan
This thesis is focused on the noise in different types of parlors it deals with the measurement of noise in the monitored different types of parlors. For this measurement were selected farms in my area: Zemědělská společnost Slapy a.s., Školní statek Měšice a Zemědělské a obchodní družstvo Podhradí Choustník. This measurement was conducted successively in all three parlors. There was measured the background noise in the waiting rooms and parlors before and during milking. From the measured values were calculated equivalent sound pressure levels and then compared and evaluated monitored parlors in the terms of noise pollution not only on animals but also at operating personnel.
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