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Presence and action of negative audio signals in environment
Renza, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
The thesis deals with negative influences of audio signals in the environment and the impact of the signals on human in psychological and physiological point of view. The origins of such audio signals as well as protection from their negative effects are considered. The thesis includes an overview study of standards and basic literature. Selected audio signals are presented using a program for negative audio signal analysis.
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Speech intelligibility index
Kostelník, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
This bachelor’s thesis presents evaluating of speech intelligibility in environment with noise. There are described two methods to reach this purpose – articulation index and speech intelligibility index, according to relevant standards. Part of this thesis deals with measurement of sound pressure to calculation sound pressure spectrum level. The last part of this work includes voice recordings of eight people and noise recordings of moving car in interior for different situations and their processing and evaluation.
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Diagnostical Analysis of Voice
Sala, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
Goal of this work was create survey study of information resources deal with diagnostic analysis of speech signal. Two methods for estimation of glottal flow was programmed. Finally, attention was focused on determination of criterions for description of selected pathological diagnosis and influence of stress on the glottal flow. Outcome of this work is proposal two criterions for describe influence of stress on the glottal flow.
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Design of Software Tests for BSIS
Cibulka, Tomáš ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
The aim of this thesis is design of software tests in PHP for bachelor's studium course Signals and Systems (BSIS). A part of design is also the preparation of the test questions. The first part of thesis deals with description of the PHP language and other technologies that will be used in the design. It is described the design and creation of the application. Finally, there are presented examples from the application and information about the set of test questions that have been created.
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Processing of Biosignals Using PC
Románek, Jakub ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
The Bachelor thesis deals biosignal processing on the computer. In this work are given basic types of biological signals of their way to capture and access to a computer. There are selected examples of available sensors and their subsequent storage record. The project analyzes the software environment, Mathcad and followed to process external signals. Finally, there is a method of measuring the heart pulse and its changes with periods in the histogram.
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Speech intelligibility index
Kostelník, Pavel ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
This bachelor’s thesis presents evaluating of speech intelligibility in environment with noise. There are described two methods to reach this purpose – articulation index and speech intelligibility index, according to relevant standards. Part of this thesis deals with measurement of sound pressure to calculation sound pressure spectrum level. The last part of this work includes voice recordings of eight people and noise recordings of moving car in interior for different situations and their processing and evaluation.
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Speech signal processing in spectral domain
Pavlíček, Tomáš ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
The thesis is focused on getting acquainted with methods of adapting speech signals in spectrum domain and with formants. Fist part is dealing with definition of formant, the relation between Czech language and formants, performing formant features and describing the use of formants in practice. This part includes preprocessing of signals before analysis on its own. This work contains a list of the most common methods for counting speech signals spectrum focused on estimation of spectrum by linear prediction. Practical part contains a verification of the most common methods for specifying formants, which are linear prediction coding and Fourier transformation. Next part is dealing with the description of methods used in created program. It also contains the description of functions of this program and the manual for it. In the end of this work the function of created program is verified and specified database is described.
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Design of Software Tests for BSIS
Cibulka, Tomáš ; Šebesta, Vladimír (referee) ; Sigmund, Milan (advisor)
The aim of this thesis is design of software tests in PHP for bachelor's studium course Signals and Systems (BSIS). A part of design is also the preparation of the test questions. The first part of thesis deals with description of the PHP language and other technologies that will be used in the design. It is described the design and creation of the application. Finally, there are presented examples from the application and information about the set of test questions that have been created.
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